(19)
(11)EP 3 300 863 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
17.06.2020 Bulletin 2020/25

(21)Application number: 16191097.1

(22)Date of filing:  28.09.2016
(51)International Patent Classification (IPC): 
B26B 19/38(2006.01)
B26B 19/48(2006.01)
B26B 19/40(2006.01)
B26B 19/04(2006.01)

(54)

ELECTRIC SHAVER

ELEKTRISCHER RASIERAPPARAT

RASOIR ÉLECTRIQUE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(43)Date of publication of application:
04.04.2018 Bulletin 2018/14

(73)Proprietor: Braun GmbH
61476 Kronberg (DE)

(72)Inventors:
  • Erndt, Andreas
    61476 Kronberg/Taunus (DE)
  • Berger, Philipp
    61118 Bad Vilbel (DE)
  • Perez Lopez, Cirilo Javier
    61476 Kronberg/Taunus (DE)
  • Kappes, Diana
    Boston, MA 02127-1096 (US)

(74)Representative: P&G Patent Germany 
Procter & Gamble Service GmbH Sulzbacher Straße 40
65824 Schwalbach am Taunus
65824 Schwalbach am Taunus (DE)


(56)References cited: : 
EP-A1- 1 403 011
DE-A1-102008 032 150
US-A- 5 257 456
US-A1- 2006 143 924
CH-A- 270 913
FR-A1- 2 911 083
US-A- 5 704 126
US-A1- 2009 049 694
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    FIELD OF THE INVENTION



    [0001] The present invention relates to electric shavers providing for non-cutting auxiliary functions such as for example combing, cooling, heating or lubricating the skin to be shaved. More particularly, the present invention relates to an electric shaver comprising a shaver housing, a shaver head including at least one cutter element drivable by a drive unit in an oscillating manner along a cutter oscillation axis and a non-cutting auxiliary function element for applying an auxiliary skin treatment other than hair cutting to a skin portion to be shaved, said auxiliary function element having an applicator head positioned aside the cutter element. The present invention further relates to an electric shaver, comprising a shaver handle housing, a shaver head including at least one cutter element drivable by a drive unit in an oscillating manner along a cutter oscillation axis wherein said drive unit includes at least one elongated drive transmitter extending from said shaver housing into said shaver head and coupled to said at least one cutter element, said elongated drive transmitter is coupled to said cutter element by means of a pivot joint. The present invention also relates to a shaver head for such an electric shaver.

    BACKGROUND OF THE INVENTION



    [0002] Electric shavers may have one or more cutter elements driven by an electric drive unit in an oscillating manner where the cutter elements reciprocate under a shear foil, wherein such cutter elements or undercutters may have an elongated shape and may reciprocate along their longitudinal axis. Other types of electric shavers use rotatory cutter elements which may be driven in an oscillating or a continuous manner. The said electric drive may include an electric motor or a magnetic type linear motor, wherein the drive unit may include an elongated drive transmitter for transmitting the driving motion of the motor to the cutter element.

    [0003] Such drive systems are sometimes quite complex in structure due to the fact that, in addition to the aforementioned cutting motion, the cutter elements may be movable in other directions so as to adapt to the contour of the skin to be shaved. For example, the cutter elements may be part of a shaver head that is pivotably supported relative to the shaver housing, wherein the pivot axis of such shaver head may extend transverse to the longitudinal direction of the shaver housing. In addition or in the alternative to such shaver head movements, the cutter elements may be movably supported relative to the shaver head so as to adjust their position relative to the skin.

    [0004] For example, US 2009/0025229 A1 or DE 10 2008 032 150 A1 discloses an electric shaver having a shaver head pivotably supported relative to the shaver housing about a shaver head pivot axis extending transverse to the longitudinal axis of the shaver housing. A pair of cutter elements provided under a shear foil can be driven in an oscillating manner along a cutter oscillation axis substantially parallel to said shaver head pivot axis. To transmit the driving action of an electric motor accommodated in the shaver housing to the cutter elements, the drive unit includes transmitter pins extending from the shaver housing towards the shaver head, wherein the oscillating driving movements of said transmitter pins are applied onto the cutter elements via an oscillatory bridge supported for oscillatory reciprocation in said shaver head, wherein said oscillatory bridge includes yielding coupling arms so as to compensate for the adjusting movements of the cutter elements. Due to the rather complex shape of the oscillatory bridge, however, the transmission architecture is rather complicated. Moreover, the yielding structure of the oscillatory bridge is power-consuming and detrimental to achieving high frequencies of oscillation of the cutter elements.

    [0005] A similar transmission architecture including an oscillation bridge of a pivoting type is known from US 7,841,090 B2.

    [0006] Self-adjusting movements of the cutter elements to adapt to the skin contour becomes more difficult when the shaver head includes auxiliary function elements such as a cooling element for cooling the skin to be shaved or lubricating elements for lubricating the skin to be shaved. Such non-cutting auxiliary function elements do not only require additional space in the shaver head, but sometimes interfere with the desired movability of the cutter elements. The auxiliary function elements have sometimes application heads positioned close to or adjacent to the cutter elements so as to contact the skin portion to be shaved or apply the auxiliary function thereto, wherein it is sometimes desirable that the auxiliary function element does not participate in the self-adjusting movements of the cutter elements. For example, it is sometimes desirable to have a rigidly supported auxiliary function element that can be pressed against the skin with a higher pressure than the cutter elements. Furthermore, movably supporting the auxiliary function elements to allow self-adjustment in a way similar to the cutter elements renders the shaver head even more bulky and makes it difficult to connect the auxiliary function elements to supportive components such as thermal elements like Pelletier elements or storage elements like lubricant tanks.

    [0007] WO 2010/003603 A1 describes an electric shaver having a cooling element as an auxiliary function element, wherein said cooling element includes rib-shaped contact portions extending along the cutter elements on an outer side of the shaver head and between said cutter elements. The cutter elements are supported against said cooling element by means of springs so that the cutter elements may dive in a direction substantially parallel to the longitudinal axis of the shaver housing, i.e. the cutter elements may dive into the shaver head due to skin contact pressure. Aside from such diving movements, however, the cutter elements may not execute any other self-adjusting movements and the entire shaver head is rigidly held in position due to the fixedly positioned cooling elements.

    SUMMARY OF THE INVENTION



    [0008] It is an objective underlying the present invention to provide for an improved electric shaver avoiding at least one of the disadvantages of the prior art and/or further developing the existing solutions. A more particular objective underlying the invention is to provide for an improved shaver head structure with improved co-existence of cutter elements and non-cutting auxiliary function elements with less interference of the auxiliary function elements with the kinematics of the cutter elements. Another objective underlying the present invention is to allow for further self-adaption of the cutter elements to the skin contour, in particular to allow for multi-axial pivoting adjustments of the cutter elements without sacrificing an easy structure and support of the auxiliary function elements and to allow for a position of such auxiliary function elements close to the cutter elements.

    [0009] To achieve at least one of the aforementioned objectives, the electric shaver has an improved shaver head structure allowing for pivoting movements of the cutter element relative to the auxiliary function element. More particularly, the shaver head and/or the at least one cutter element is supported pivotably relative to the auxiliary function element at least about a pivot axis parallel to the cutter oscillation axis. When moving the electric shaver with its shaver head across the skin, the cutter element may self-adjust its angular orientation to perpendicularly contact the skin by means of pivoting about said pivot axis parallel to the cutter oscillation axis, wherein the auxiliary function element does not need to participate in such pivoting adjustment.

    [0010] Pivotably supporting the entire shaver head and/or the at least one cutter element relative to the auxiliary function element about said pivot axis parallel to the cutter oscillation axis or about further pivot axes having other orientations, allows for a simple structure and simple support of the auxiliary function element, thus saving space in the shaver head, but nevertheless allows for adjustment movements of the cutter element to adapt the angular position of the cutter element to the skin contour and to compensate misalignment of the shaver housing to the skin contour.

    [0011] At least one of the aforementioned objective is further achieved by an electric shaver, comprising a shaver handle housing, a shaver head including at least one cutter element drivable by a drive unit in an oscillating manner along a cutter oscillation axis wherein said drive unit includes at least one elongated drive transmitter extending from said shaver housing into said shaver head and coupled to said at least one cutter element, said elongated drive transmitter is coupled to said cutter element by means of a pivot joint wherein said shaver head and/or said at least one cutter element is supported pivotably relative to said pivot joint and/or relative to said drive transmitter at least about a pivot axis parallel to said cutter oscillation axis. The at least one cutter element may pivot around the pivot joint of said drive transmitter relative to said shaver handle housing about a shaver head pivot axis. The drive unit including the transmitter is stationary (disregarding or except for the motor drive movement) connected with the shaver handle housing relative to any cutter unit skin contour adaption movements.

    [0012] These and other advantages become more apparent from the following description giving reference to the drawings and possible examples.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0013] 
    Figure 1:
    is a perspective partial view of an electric shaver having a shaver head pivotably supported relative to a shaver housing, said shaver head including two cutter elements drivable in an oscillating manner and each pivotably supported relative to a shaver head frame, wherein a non-cutting, auxiliary function element is positioned between said two cutter elements,
    Figure 2:
    shows a cross-sectional view of the shaver head in a cross-sectional plane extending perpendicular to the cutter oscillation axis and containing elongated drive transmitters for driving the cutter elements in an oscillating manner along said cutter oscillation axis, wherein said cross-sectional view shows the auxiliary function element extending between the two cutter elements towards a skin contact side of the shaver head,
    Figure 3:
    a perspective partial view of the shaver head illustrating the arrangement of the pivot axis of a pivot frame supporting two cutter elements and a long hair cutter to allow for joint pivoting of the two cutter elements and the long hair cutter relative to the auxiliary function element,
    Figure 4:
    shows a side view of the shaver head of Figure 3 in a direction parallel to the pivot axis of the cutter elements, wherein view (a) shows the cutter elements in an initial or basic position not yet pivoted to any side, wherein view (b) shows the cutter elements in a counter-clockwise pivoted position due to skin contact pressure onto a left cutter element and view (c) shows the cutter elements in a clockwise pivoted position due to skin contact pressure onto a right cutter element,
    Figure 5:
    a cross-sectional view through the shaver head of Figures 3 and 4 in a cross-sectional plane perpendicular to the cutter oscillation axis and perpendicular to the pivot axis of the cutter elements, wherein the two cutter elements and the long hair cutter are shown in a clockwise pivoted position with all cutters having the same pivot angle relative to the auxiliary function element,
    Figure 6:
    shows a schematic perspective view of a shaver head having cutter elements pivotably supported independently from each other allowing for independent pivoting of the cutter elements, in a perspective view similar to Figure 3,
    Figure 7:
    a side view of the shaver head of Figure 6 in a viewing direction parallel to the pivot axis of the cutter elements, wherein
    view (a) shows the cutter elements in an upper initial or basic position,
    view (b) shows the cutter elements in a lower end position or a lower diving position where the two cutter elements, in comparison to the basic position of view (a), have pivoted in angular directions opposite to each other,
    view (c) shows the cutter elements each pivoted in a clockwise direction to adjust to an inclined skin surface,
    view (d) shows the cutter elements in a working position where the two cutter elements have been pivoted in angular directions contrary to each other to adapt to a skin contour substantially perpendicular to the longitudinal axis of the shaver,
    view (e) shows the cutter elements each pivoted in a counter-clockwise direction to adapt to an inclined skin contour,
    view (f) shows the cutter elements in an upper end position or basic position similar to view (a), wherein the two cutter elements are pivotably supported about separate pivot axes extending substantially parallel to each other, but spaced apart from each other,
    view (g) shows a left cutter element in its upper end position or basic position similar to view (a) and a right cutter element in an intermediate position similar to view (d), and
    view (h) shows a left cutter element in an intermediate position similar to view (d) and a right cutter element in an upper end position or basic position similar to view (a),
    Figure 8:
    a side view of a shaver head in a viewing direction substantially perpendicular to the cutter oscillation axis, the shaver's cutter elements having an additional pivot axis extending substantially perpendicular to the cutter oscillation axis and perpendicular to the shaver housing's longitudinal axis, wherein view (a) shows the cutter element an a basic or initial position, view (b) shows the cutter element in a counter-clockwise pivoted position and view (c) shows the cutter element in a clockwise pivoted position, view (d) shows the front side cutter element in a lower end position or diving position, and view (e) shows the front side cutter element and the rear side cutter element in different angular positions after pivoting in angular directions contrary to each other,
    Figure 9:
    shows a cross-sectional view of the shaver head of Figure 8 in a cross-sectional plane substantially parallel to the cutter oscillation axis and perpendicular to the addition pivot axis illustrated by the different views of Figure 8,
    Figure 10:
    a cross-sectional view of the shaver head of Figure 6-9 in a cross-sectional plane perpendicular to the cutter oscillation axis and containing the elongated drive transmitters for driving the cutter elements in an oscillating manner, wherein view (a) shows the cutter elements in an upper end position or initial position with opposite inclinations relative to the auxiliary function element and view (b) shows the cutter elements in their lower end position again having opposite inclinations relative to the auxiliary function element,
    Figure 11:
    a side view of the shaver head of Figure 10 in a viewing direction parallel to the cutter oscillation axis,
    Figure 12:
    a cross-sectional view of the shaver head of Figure 11 along a line D-D in Figure 11 going through the longitudinal shaver housing axis to illustrate the long hair cutter structure,
    Figure 13:
    a cross-sectional view of the shaver head of Figures 11 and 12 along line C-C in Figure 11 going through the cutter element and the elongated drive transmitter connected thereot, illustrating the pivot joint connecting the elongated drive transmitter to the cutter element,
    Figure 14:
    shows a pivot connection between the elongated drive transmitter and a cutter element in further detail, wherein view (a) shows a perspective view of a ball joint piece having a spherical support surface, view (b) shows a cross-section of the pivot joint in a plane containing the elongated drive transmitter and parallel to the oscillation axis, and view (c) shows a cross-section of the pivot joint in a plane containing the elongated drive transmitter and transverse to the axis of oscillation, and
    Figure 15:
    shows an exploded, perspective view of a pivot joint having a ball joint piece with a spherical support surface having flattening or bevelment portions providing for play of the connector piece relative to the cutter element, wherein view (a) shows the connector piece in a partly cross-sectional view relative to the cutter element and the elongated drive transmitter, whereas view (b) shows the connector piece as a whole.

    DETAILED DESCRIPTION OF THE INVENTION



    [0014] In order to allow flexible, yielding self-adjusting movements of the cutter element to achieve self-adaption to the skin contour and compensation of misalignment of the handpiece relative to the skin contour, but still providing for a simple structure and simple support of the non-cutting auxiliary function element, the shaver head and/or the at least one cutter element is supported pivotably relative to the auxiliary function element at least about a pivot axis parallel to said cutter oscillation axis. Such pivot axis extending substantially parallel to the cutter oscillation axis allows for self-adjustment of the angular orientation of the cutter element and thus adapting to the skin contour better than just diving movements which diving movements nevertheless are possible.

    [0015] Such pivoting relative to the auxiliary function element may be carried out by the shaver head including the cutter element, more particularly a shaver head support structure together with the cutter element supported thereon so that the shaver head frame together with the at least one cutter element may pivot together relative to the auxiliary function element. More particularly, almost the entire shaver head structure exclusive the auxiliary function element, but inclusive the oscillating cutter element may together pivot about the aforementioned pivot axis.

    [0016] In addition or in the alternative to such comprehensive pivoting of the shaver head, the oscillating cutter element may pivot relative to the shaver head, more particularly relative to the shaver head base structure or shaver head frame so that the cutter element independently from the shaver head base structure may pivot relative to the auxiliary function element.

    [0017] Said auxiliary function element may be rigidly supported to extend in a fixed orientation and/or in a fixed position relative to the shaver housing and/or relative to the shaver head frame or shaver head housing. Thus, the auxiliary function element does not need to participate in the pivoting adjustment of the cutter element, but may maintain its given position and/or fixed orientation irrespective of pivoting adjustments of the cutter element.

    [0018] The auxiliary function element is adapted to apply varying non-cutting auxiliary functions to the skin that is shaved by the cutter element. More particularly, the auxiliary function element may include a skin cooler or a skin heater for cooling and/or heating the skin to be shaved. Such skin cooler and/or skin heater may include a skin contact portion cooperating with a thermal element such as a Pelletier element. In addition or in the alternative to such skin cooling and/or heating, the auxiliary function element may include a liquid applicator for applying a liquid to the skin portion to be shaved or having been shaved, wherein such liquid may include odor or fragrance agents, skin calming agents, disinfecting agents and/or other skin treatment agents.

    [0019] Furthermore, the auxiliary function element may include a lubricator for applying lubricant to the skin portion. Other media to be applicable to the skin may include or consist of gas, powder, foam or gel so the auxiliary function element may include a gas applicator, a powder applicator, a foam applicator and/or a gel applicator. For example, a gas applicator may include a fan blowing air onto the skin, wherein the air flow may include powders such as skin smoothening and/or coloring particles. Furthermore, foams such as lubricating or shaving foams or gels such as skin calming gels may be applied onto the skin wherein the applicator head may include a delivering pad or ball like a deodorant stick.

    [0020] According to a further aspect, the applicator head of the auxiliary function element may include an uncovered contact surface for contacting the skin portion or at least facing the skin portion with only a small gap being between the applicator head's contact surface and the skin portion.

    [0021] The applicator head of the auxiliary function element and/or the aforementioned contact surface may form a portion of the outer contour of the shaver head to allow for influence onto the skin and to apply the auxiliary function to the skin.

    [0022] Basically, the applicator head of the auxiliary function element may be positioned at different portions of the shaver head. For example, the auxiliary function element may have an elongated applicator head extending along a side of the cutter element, for example along a principal side of the cutter element extending substantially parallel to the cutter oscillation axis. Taking into account a main handling direction of the shaver along which the shaver head is moved across the skin, the auxiliary function element may extend in front of and/or at the rear side of the cutter element. The aforementioned main handling direction may extend substantially perpendicular to the cutter oscillation axis and/or substantially perpendicular to the shaver housing's longitudinal axis and/or substantially perpendicular to the longitudinal axis of the cutter element having an elongated shape. The auxiliary function element may be positioned such that it runs within the track laid by at least one cutter element and/or at least one cutter element runs within the track laid by the auxiliary function element when the shaver head is moved across the skin along the said main handling direction of the shaver.

    [0023] More particularly, the auxiliary function element may extend from the shaver housing through the internal structure of the shaver head and/or inside a shaver head housing with the applicator head of the auxiliary function element forming a part of a skin contact side of the shaver head and/or a top side of the shaver head turned away from the shaver housing. The function element may extend through an interior of the shaver head and/or through the interior structure of the shaver head so that structural elements and/or structural portions of the shaver head may be positioned on opposite sides of the auxiliary function element or may surround the auxiliary function element.

    [0024] For example, the auxiliary function element may be rigidly connected to a shaver housing and project from said shaver housing into the shaver head through which it extends to the shaver head's skin contact side. When the auxiliary function element is mounted to the shaver housing, the shaver head including a shaver head frame supporting the cutter element may be pivotably supported and may be allowed to pivot relative to the auxiliary function element by means of an easy, simple support structure. In the alternative, the auxiliary function element may be mounted to the shaver head, more particularly to a shaver head support structure onto which the cutter element is pivotably supported or onto a shaver head housing.

    [0025] The shaver head may include only one cutter element, but the shaver head also may include two, three or more cutter elements. When the shaver head includes a plurality of cutter elements, the applicator head of the auxiliary function element may be positioned between a pair of said plurality of cutter elements. For example, the auxiliary function element may be positioned such that it follows at least one cutter element and moves in advance of at least another cutter element when considering movement of the shaver head across the skin to be shaved. In other words, the auxiliary function element may be positioned such that it runs within the track laid by at least one cutter element, wherein at least another cutter element runs within the track laid by the auxiliary function element.

    [0026] When there are a plurality of cutter elements, each of said plurality of cutter elements may be pivotably supported about at least said pivot axis parallel to the cutter oscillation axis, wherein each of the cutter elements may have its own pivot axis or, in the alternative, at least two of the plurality of cutter elements may share a common pivot axis parallel to the cutter oscillation axis. When there are cutter elements having their own pivot axis, such separate pivot axis may extend substantially parallel to each other, but spaced apart from each other.

    [0027] Pivoting of the plurality of cutter elements may be controlled in different ways. For example, the cutter elements and/or their support structures may be linked to each other such that they pivot together about said pivot axis. For example, the cutter elements may be supported on a common pivot frame which may execute the aforementioned pivoting about a pivot axis parallel to the oscillation axis, thus effecting a joint pivoting of the cutter elements in the same angular direction. In the alternative, the cutter elements may be supported on separate pivot frames wherein such separate pivot frames may be linked to each other, for example by means of a toothing or a toothed transmission, and/or by means of a control arm arrangement so that the pivotably supported cutter elements are caused to pivot in directions contrary to each other.

    [0028] In the alternative to such controlled pivoting where one cutter element pivots in response to pivoting of another cutter element, the cutter elements may, according to a further aspect, pivot independently from each other about a pivot axis parallel to the cutter oscillation axis. Due to such independent pivotable support of the cutter elements, each cutter element may adapt its position and/or angular orientation to the skin contour without being affected by pivoting of the other cutter element. Thus, each cutter element may individually find its position to the skin contour. For example, the cutter element may be supported on separate support frames allowed to pivot independently from each other.

    [0029] The aforementioned pivoting about a pivot axis parallel to the cutter oscillation axis does not need to be the only degree of freedom of the at least one cutter element relative to the non-cutting auxiliary function element. According to a further aspect, the at least one cutter element may be multi-axially pivotably supported relative to said auxiliary function element and/or relative to a shaver head frame of the shaver head about a pair of pivot axes extending perpendicular to each other and substantially transverse to a longitudinal axis of the shaver housing. Such multi-axial pivoting movement of the cutter element allows for self-adjustment of the cutter element in various ways and thus adaption to various skin contours and various misalignments of the shaver housing to the skin to be shaved.

    [0030] In addition or in the alternative to such multi-axially pivotable support, the at least one cutter element also may be movably supported for linear displacement, e.g. to allow diving of the cutter element along a displacement axis substantially parallel to the shaver housing's longitudinal axis. In addition or in the alternative to such diving, the cutter element also may be allowed to linearly displace in a direction substantially perpendicular to the oscillation axis and transverse to the shaver housing's longitudinal axis, e.g. so as to allow for yielding of the cutter element when being pressed onto the skin in a rather inclined way.

    [0031] The aforementioned multi-axial pivoting and/or the additional linear displacement may be controlled as described before. For example, multi-axial pivoting of one cutter element may be controlled in response to multi-axial pivoting of another cutter element and vice versa, for example, by means of control links between the cutter elements. In the alternative, the cutter elements may execute multi-axial pivoting independently from each other. With regard to linear displacement, it is also possible to control linear displacement of one cutter element in response to linear displacement of another cutter element, e.g. such that a pair of cutter element dives together into the shaver head. In the alternative, the cutter elements may be supported separately to allow for linear displacements of the cutter elements independently from each other.

    [0032] The transmission train for transmitting the drive power and movements of the electric motor to the at least one cutter element may have varying architectures and structures depending on the type of motor and the arrangement thereof. For example, the drive unit may include a rotatory electric motor or a magnetic-type linear motor, wherein irrespective of its type the motor may be arranged in the shaver housing or in the shaver head. In order to allow for the aforementioned self-adjustment of the cutter element, the transmission train includes corresponding degrees of freedom which may be realized in terms of pivotable joints and/or linearly displaceable connections.

    [0033] To avoid collisions between the transmission train and the non-cutting auxiliary function element, the transmission train may be adapted to allow for pivoting and/or linearly displacing movements of the cutter elements in a region close to said cutter element so that other parts of the transmission train may avoid any movements in a direction transverse to the cutter oscillation axis and transverse to the longitudinal axis of the shaver housing. In particular, the transmission train may be adapted to lack any oscillation bridge within the shaver head which oscillation bridges often include a bridge supported by yielding or flexible support arms, thereby rendering the bridge structure rather bulky and space-consuming.

    [0034] The electric shaver may provide for a direct coupling of an elongated drive transmitter to the cutter element avoiding any oscillatory yielding bridge structure between the elongated drive transmitter and the cutter element. More particularly, the elongated drive transmitter may be coupled to the cutter element by means of a pivot joint providing for a pair of pivot axes extending perpendicular to each other and transverse to a longitudinal axis of said elongated drive transmitter. In order to allow for adjusting movement of the cutter element transverse to the cutting oscillation, the pivot joint may be displaceably mounted to the elongated drive transmitter and/or to the cutter element to allow for displacement of the pivot joint relative to the elongated drive transmitter and/or to the cutter element in a direction transverse to the cutter oscillation axis and transverse to the longitudinal axis of the elongated drive transmitter.

    [0035] A direct, pivotable connection of the elongated drive transmitter to the cutter element may help in achieving low power dissipation of the transmission train and a direct response of the cutter element to the driving movements of the elongated drive transmitter, thus allowing for high oscillation frequencies. The elongated drive transmitter may extend to or into the cutter element and directly push and/or pull the cutter element to effect the cutting movement. The pivot joint coupling the elongated drive transmitter to the cutter element helps in allowing for adjustment movements of the cutter element transverse to the longitudinal axis of the elongated drive member and/or transverse to the cutting oscillation despite a possible direct transmission of driving action along the axis of oscillation without play between the elongated drive transmitter and the cutter element.

    [0036] In order to achieve instantaneous play-free driving of the at least one cutter element along the cutter oscillation axis as well as allowing yielding self-adjusting movements of the cutter element along and/or about further axes other than said oscillation axis to achieve self-adaption of the cutter element to the skin contour and compensation of misalignment of the handpiece relative to the skin contour, the drive train may dispense with any yielding oscillation bridge between the elongated drive transmitter and the cutter element, but the elongated drive transmitter may extend to the cutter element and may be directly connected to the cutter element by means of a pivot joint, wherein said pivot joint may form the only axes of freedom and/or axes of movability of the cutter element relative to the elongated drive transmitter.

    [0037] The pivot joint may be the only structural element or spot of the transmission train where the cutter element may move relative to the elongated drive transmitter.

    [0038] To achieve a stiff transmission characteristic with low losses for the cutting movement along the cutter oscillation axis on the one hand and allow for self-adaption of the cutter element along and/or about other axes, the said pivot joint may be adapted to be free of any play relative to the said cutter oscillation axis, wherein in particular the engagement of the pivot joint with the elongated drive transmitter and the cutter element may be adapted to be free of play relative to said cutter oscillation axis. On the other hand, the said pivot joint may be adapted to provide for play along displacement axes other than said oscillation axis and/or provide for freedom to pivot about one or more pivot axes.

    [0039] Depending on the type of electric shaver, the drive unit which may include a rotatory electric motor or a magnetic-type linear motor, may be accommodated within the shaver housing. In the alternative, the rotatory or linear motor may be accommodated within the shaver head.

    [0040] The aforementioned elongated drive transmitter for transmitting torque, force, power and/or movements from the motor to the cutter element, may extend from the shaver housing into the shaver head, wherein the elongated drive transmitter may have a longitudinal axis substantially in parallel with the longitudinal axis of the handpiece. When the drive unit has a motor accommodated in the shaver head, the elongated drive transmitter may extend from an interior of the shaver housing to the exterior of the shaver housing, in particular within a region facing the shaver head. When the motor is accommodated within the shaver head, the elongated drive transmitter may extend, with its longitudinal axis, substantially in parallel with a main axis of the shaver head.

    [0041] To achieve a stiff transmission characteristic and avoid transmission losses, the said elongated drive transmitter may form a rigid drive pin which has a sufficient stiffness and strength, and is adapted to not bend or deform under operative loads. For example, ist may be a metal pin.

    [0042] According to another aspect, said elongated drive transmitter may be supported to extend in a fixed angular orientation and to oscillate uniaxially relative to said shaver housing along an axis perpendicular to the longitudinal axis of said elongated drive transmitter. The elongated drive transmitter may execute a purely linear displacement without pivoting about any axis, wherein the elongated drive transmitter may be held with its longitudinal axis substantially parallel to the longitudinal axis of the shaver housing. Basically, the said linear displacement of the elongated drive transmitter may follow a curved path such as an oval path or an s-shaped path of oscillation. According to another aspect, said linear displacement may follow a straight path in terms of a reciprocation or oscillation along an axis which may extend substantially parallel to the pivot axis of the shaver head and/or parallel to the longitudinal extension of the cutter element.

    [0043] Depending on the configuration of the cutter element and its mounting or support structure, the elongated drive transmitter may have a length to end before or at the cutter element or to extend into an interior transmitter recess formed in said cutter element in which an end portion of said elongated drive transmitter is received pivotably about said pair of pivot axes transverse to the drive transmitter's longitudinal axis and displaceable in said direction transverse to said cutter oscillation axis and transverse to said longitudinal axis of the elongated drive transmitter. An extension of the elongated drive transmitter into an interior transmitter recess may bring the position of the pivot axis close to the cutting and/or shearing surfaces of the cutter element and therefore, may reduce the length of a lever arm going from the point where forces are transmitted by the pivot joint onto the cutter element to the point where resistive forces due to cutting or shearing are applied to the cutter element. Thus, a tendency of pivoting of the cutter element due to driving forces and the lever arm thereof may be reduced.

    [0044] The pivot joint between the elongated drive transmitter and the cutter element may be realized in different ways. For example, the elongated drive transmitter may be in direct engagement and/or in direct contact with body walls of the cutter element defining the aforementioned interior transmitter recess forming the pivot joint. When the elongated drive transmitter is formed by a rigid drive pin, the said drive pin may be in direct engagement with the walls defining said interior transmitter recess in the cutter element. Optionally, the drive pin may be provided with an engagement sleeve rigidly connected to the drive pin body and engaging with said transmitter recess. Such sleeve may have a cylindrical shape seated on the drive pin and form a replacement sleeve which may be replaced due to wear and tear or may form a sliding sleeve made of an appropriate material providing for smoothly sliding engagement with the cutter element.

    [0045] The said interior transmitter recess of the cutter element may form an elongated, slot-like hole having convex sidewalls defining a gap the width of which substantially corresponds to a thickness or diameter of said elongated drive transmitter and the length of which is substantially larger than said thickness or diameter of the elongated drive transmitter, said width extending parallel to the cutter oscillation axis and said length extending transverse to the cutter oscillating axis and transverse to the longitudinal axis of the elongated drive transmitter. In particular, the elongated, slot-like hole may be adapted to receive the elongated drive transmitter substantially without play relative to the cutter oscillation axis and, on the other hand, to provide for play between the cutter element and the elongated drive transmitter relative to an axis transverse to the cutter oscillation axis and transverse to the longitudinal axis of the elongated drive transmitter. Thus, a stiff transmission characteristic relative to the cutter oscillation axis is achieved, whereas on the other hand self-adaption movements of the cutter element to the skin contour are possible and compensation of misalignment due to, for example, pivoting movement of the shaver head and/or adjusting movements of the cutter element relative to the shaver head can be achieved. The convex shape of the sidewalls defining the slot-like hole receiving the drive transmitter provides for a pivoting degree of freedom and allows for pivoting adjustment of the cutter element relative to the elongated drive transmitter about a pivot axis substantially transverse to the cutter oscillation axis and the longitudinal axis of the elongated drive transmitter.

    [0046] According to another aspect, the pivot joint may include a block and/or sleeve-like connector connecting an end portion of said elongated drive transmitter to the cutter element, wherein said end portion of the elongated drive transmitter can be received in said connector piece mounted to the cutter element.

    [0047] Said block-like connector may form a ball-joint piece having a substantially spherical support surface in pivotable engagement with a substantially spherical support surface of the cutter element and having a transmitter recess receiving the elongated drive transmitter. The said spherical support surfaces on the ball-joint piece and the cutter element do not need to define a complete sphere, but may define only a portion of such sphere, for example a spherical cap or a dome-shaped bearing surface. Nevertheless, it is possible that the spherical support surface of the ball-joint piece forms almost a complete sphere or a hemisphere or more than a hemisphere.

    [0048] In particular, the said spherical support surfaces may be oriented and/or arranged so as to cover at least portions of the pivot joint containing and/or surrounding the cutter oscillation axis going through the pivot joint. In other words, the spherical support surfaces may be provided at least in regions of the pivot joint facing the reciprocation direction of the cutter element so as to transmit the driving forces in this direction. More particularly, the spherical support surfaces may be arranged such that the cutter oscillation axis goes perpendicularly through said spherical surfaces.

    [0049] The elongated drive transmitter may be received in said ball-joint piece in different ways. According to an aspect, the transmitter recess of the connector may be adapted to prevent any movement of the block-like connector relative to the elongated transmitter piece in a direction parallel to the cutter oscillation axis and to allow for movement of the connector relative to the elongated drive transmitter along an axis transverse to the cutter oscillation axis and transverse to the elongated drive transmitter and/or pivoting movement about a pivot axis parallel to the cutter oscillation axis.

    [0050] More particularly, the said transmitter recess of the connector may form an elongated, slot-like hole the width of which substantially corresponds to a thickness or a diameter of the elongated drive transmitter and a length of which is substantially larger than said thickness or diameter of the elongated drive transmitter to allow for displacement of the connector relative to the elongated drive transmitter in the direction transverse to said cutter oscillation axis and transverse to the longitudinal axis of the elongated drive transmitter. Such slot in the connector block allows for the aforementioned self-adjusting of the cutter element relative to the elongated drive transmitter along the displacement axis transverse to the cutter oscillation axis and transverse to the elongated drive transmitter and about a pivot axis parallel to the cutter oscillation axis. Further self-adjusting of the cutter element relative to the elongated drive transmitter in terms of a pivoting about a pivot axis transverse to the oscillation axis and transverse to the elongated drive transmitter can be effected by means of corresponding pivoting of the connector block relative to the cutter element.

    [0051] In the alternative to the aforementioned slot-like transmitter recess of the connector allowing for displacement and/or pivoting of the connector block relative to the elongated drive transmitter, the said connector block also may be rigidly fixed to the elongated drive transmitter. To allow for adjusting movements of the cutter element relative to the elongated drive transmitter, the connector may have play relative to the support surface of the cutter element. More particularly, the aforementioned spherical support surface of the connector piece may be provided with flattening and/or bevelment portions providing for play of the connector relative to the cutter element and allowing for displacement of the cutter element relative to the elongated drive transmitter in the direction transverse to the cutter oscillation axis and transverse to the longitudinal axis of the elongated drive transmitter.

    [0052] According to an aspect, such flattening and/or bevelment portions may extend on opposite sides of the ball-joint piece and/or be aligned substantially parallel to the cutter oscillation axis.

    [0053] The block- and/or sleeve-like connector may be held in a substantially fixed rotatory orientation, in particular such that the longitudinal axis of the aforementioned slot-like hole and/or the aforementioned flattening or bevelment portion extend in their desired orientation. Rotation of the connector relative to the cutter element and/or relative to the elongated drive transmitter about an axis parallel to the longitudinal direction of the elongated drive transmitter may be prevented by means of a rotation preventer portion formed on said connector and engaging with a corresponding rotation preventer portion provided on the cutter element and/or on the elongated drive transmitter.

    [0054] The aforementioned rotation preventer portion may form a projecting and/or recess engagement portion engaging with a recessed and/or projecting engagement portion of the cutter element. For example, such rotation preventer portion may include cylindrical or conical or dome-shaped axial stubs and corresponding stub-receiving recesses extending in a direction transverse to the cutter oscillation axis and transverse to the elongated drive transmitter.

    [0055] The pivot joint support surfaces of the cutter element may be formed integrally or rigidly fixed to a cutter element body of the cutter element. Such pivot joint support surfaces may be formed directly by the material of the cutter element body. In the alternative, optionally such support surfaces may be formed by an insert or a cover-layer rigidly connected to the cutter element, for example in terms of a bearing insert.

    [0056] According to another aspect, the pivot joint support surface of the cutter element may be provided on a cutter element spring connected to a cutter element body and elastically biasing the cutter element body against a shear foil of the shaver head. Thus, the elongated drive transmitter drives the biasing spring structure in an oscillating manner along the aforementioned cutter oscillation axis which biasing spring structure is adapted to bias the cutter element towards a shear foil and/or towards the skin to be shaved.

    [0057] The pivot axis of the at least one cutter element as defined by the pivot joint may be spaced apart from the pivot axis of the shaver head frame or the entire shaver head structure. In particular, when there are more than one cutter elements, the pivot axis defined by the pivot joint may be offset from the pivot axis of the shaver head in a direction transverse to the longitudinal axis of the elongated drive transmitter and transverse to the cutter oscillation axis and/or offset in a direction substantially parallel to the elongated drive transmitter's longitudinal axis. Basically, the same kind of offset may be provided when there is only one cutter element.

    [0058] More particularly, the pivot axis defined by the aforementioned pivot joint between the elongated drive transmitter and the cutter element may be further away from the shaver housing than the pivot axis of the shaver head. If the elongated drive transmitter extends from the shaver housing into the shaver head, the elongated drive transmitter may have a length longer than the distance the shaver head pivot axis is spaced apart from the shaver housing.

    [0059] These and other features become more apparent from the examples shown in the drawings. As can be seen from Fig. 1, shaver 1 may have a shaver housing 2 forming a handpiece for holding the shaver, which shaver housing 2 may have different shapes such as - roughly speaking - a substantially cylindrical shape or box shape or bone shape allowing for ergonomically grabbing and holding the shaver, wherein such shaver housing has a longitudinal shaver housing axis due to the elongated shape of such housing, cf. Fig. 1.

    [0060] On one end of the shaver housing 2, a shaver head 3 is attached to the shaver housing 2, wherein the shaver head 3 can be pivotably supported about a shaver head pivot axis 7 extending substantially perpendicular to the aforementioned longitudinal shaver housing axis 30. The shaver housing 2 may have a pair of support arms projecting from the shaver head end of the shaver housing 2 between which support arms a carrier structure of the shaver head 3, for example in terms of a shaver head frame 6, can be pivotably mounted about said shaver head pivot axis 7.

    [0061] As can be seen from Fig. 1 and 2, the shaver head 3 may include a pair of cutter elements 4, wherein only one or three or more of such cutter elements 4 may be provided. Such cutter elements 4 may form block-like undercutters with a plurality of shearing blades cooperating with a shear foil 5 covering the respective cutter elements 4. The said cutter elements 4 may have an elongated shape with a longitudinal axis extending substantially parallel to the aforementioned shaver head pivot axis 7 and/or substantially parallel to the cutting oscillation axis 8 along which the cutter elements 4 are driven in an oscillating manner.

    [0062] In addition to the at least one cutter element 4, the shaver head 3 includes at least one non-cutting auxiliary function element 20 which may have an applicator head 21 forming a part of the skin contact side of the shaver head 3, more particularly part of a front side of the shaver head 3 turned away from or opposite to the shaver housing 2, cf. Figure 2.

    [0063] The said applicator head 21 may have an elongated and/or plate-like configuration to extend along at least one side of at least one cutter element 4, wherein, however, other shapes and configurations are possible.

    [0064] As can be seen from Fig. 2, such auxiliary function element 20 may include a thermal element such as a cooling and/or heating element having a contact surface 22 which is not covered by any shaver head housing, but can be brought into contact with the skin to be shaved.

    [0065] Such contact surface 22 may extend along one side of the at least one cutter element 4, in particular along a principal side of such cutter element 4 which principal side can be the longer side of a cutter element 4 having an elongated shape. When there are two or more than two cutter elements 4, the said auxiliary function element 20 may be positioned between a pair of said plurality of cutter elements 4, wherein the contact surface 22 may extend between the contact surfaces of such pair of cutter elements 4.

    [0066] The non-cutting auxiliary function element 20 may extend from the shaver housing 2 through the interior of the shaver head 3 to the side of the shaver head 3 turned away from the shaver housing 2, wherein the auxiliary function element 20 may be mounted to the shaver housing 2 and/or to a structural element of the shaver head 3. In particular, the auxiliary function element 20 may be fixedly mounted to the shaver housing 2 and/or may be held in a fixed orientation projecting from the shaver housing 2 towards the shaver head side turned away from the shaver housing 2, wherein the auxiliary function element 20 may extend substantially in parallel with the longitudinal axis 30 of the shaver housing 2. As can be seen from Fig. 1 and Fig. 2, the auxiliary function element 20 may have a rib-shaped configuration or at least a rib-shaped application head 21 extending through the shaver head 3.

    [0067] The shaver head 3 may include further functional elements such as a long-hair cutter 31 which may be arranged between a pair of cutter elements 4, as can be seen from Fig. 1.

    [0068] The said cutter elements 4 may be supported moveably relative to the shaver head frame 6 which is pivotably supported on the shaver housing 2 such that the cutter elements 4 may pivot with the shaver head 3 about shaver head pivot axis 7 and, in addition, may oscillate along the cutting oscillation axis 8 relative to said shaver head frame 6. In addition to these two degrees of freedom or in the alternative to pivot axis 7, the cutter elements 4 may be moveable relative to the shaver head frame 6 along and/or about additional axes. For example, the cutter elements 4 may dive into the shaver head 3, that means displaced along an axis substantially parallel to the shaver housing longitudinal axis 30 when the shaver head 3 is in an position aligned therewith. In addition or in the alternative, the cutter elements 4 may pivot relative to the shaver head frame 6 about pivot axes 11 and 12 perpendicular to each other and transverse to the longitudinal shaver housing axis 30, as will be described in detail later.

    [0069] The cutter elements 4 can be driven in an oscillating manner along cutting oscillation axis 8. In addition to such cutting movements, the cutting elements 4 are pivotable and movable in directions transverse to said cutting oscillation axis 8.

    [0070] More particularly, the cutter elements 4 may be supported pivotable about a pivot axis 11 extending substantially perpendicular to the shaver housing's longitudinal axis 30 and/or substantially parallel with the cutter oscillation axis 8. As can be seen from Figures 3 and 4, the cutter elements 4 may be supported on a common pivot frame 40 which is pivotably supported on the shaver head frame 6 about the aforementioned pivot axis 11, said pivot frame 40 having portions 40L and 40R extending on opposite sides of said pivot axis 11 so that said pivot frame 40 forms a sort of rocking yoke. A first one of the cutter elements 4 is supported on a right side portion 40R of said pivot frame 40 and a second one of said cutter elements 4 is supported on a left side portion 40L of said pivot frame 40.

    [0071] The pivot axis 11 of the pivot frame 40 may extend co-axially with the aforementioned shaver head pivot axis 7 when the entire shaver head structure is pivotably supported. In the alternative, the shaver head's pivot axis 7 may be spaced apart from the pivot axis 11 of the cutter elements 4 allowing for relative pivoting of the cutter elements 4. As a further alternative, shaver head frame 6 may be held in fixed orientation relative to the shaver housing 2 so that there is no shaver head pivot axis 7, but pivoting of the cutter elements 4 is allowed by pivot axis 11 only.

    [0072] As can be seen from Figure 4, the aforementioned common pivot frame 40 effects pivoting of the cutter elements 4 in response to each other. When, e.g., a left side portion 40L of pivot frame 40 is forced downwards by means of skin contact pressure as symbolized by arrow F1 in Figure 4, the right side portion 40R of pivot frame 40 moves upwards. In other words, both pivot frame portions 40R and 40L of pivot frame 40 and thus, the cutter elements 4 supported thereon may pivot in the same angular orientation and/or the same angular amount. For example, as shown by view (c) of Figure 4 and Figure 5, if a right side portion 40R of pivot frame 40 pivots in the clockwise direction by an angle α of, e.g., 10 degrees, then also the left side portion 40L of pivot frame 40 pivots in the clockwise direction by 10 degrees.

    [0073] As shown by Figure 5, also long hair cutter 31 may be supported on the common pivot frame 40 so that also the long hair cutter 31 executes a corresponding pivotal movements, i.e. also the long hair cutter 31 is pivoted in the same clockwise or counter-clockwise direction by the same angle. In contrast, the auxiliary function element 20 does not follow such pivoting movement, but maintains its set angular orientation.

    [0074] Supporting the cutter elements 4 on a common pivot frame 40 as shown by Figures 3 to 5, allows for a simple support structure and evenly distributes the contact pressure onto the plurality of cutter elements 4.

    [0075] As can be seen from Figure 4, the pivot frame 40 may be biased into an intermediate, initial or basic position, e.g. by means of springs acting between the pivot frame 40 and the shaver head frame 6. Such springs may include simple spiral springs or torsion springs or other suitable spring configurations.

    [0076] In the alternative to a common pivot frame 40 for both cutter elements 4, there may be separate pivot frames or separate pivot frame portions 40R and 40L for the cutter elements 4. Such separate pivot frames 40R, 40L as shown in Figures 6 and 7, may pivot independently from each other about a pivot axis 11 extending substantially parallel to the cutter oscillation axis 8. As can be seen from Figure 7, the pivot frames 40R and 40L may be supported on a common pivot axis 11 or, in the alternative, may be supported on separate pivot axes 11a and 11b spaced from each other and extending substantially parallel to each other, as it is shown by view (f) of Figure 7. Nevertheless, also in case where the two pivot frames 40R and 40L are supported on a common pivot axis 11, the pivot frames 40R and 40L may pivot independently from each other.

    [0077] The pivot frames 40R and 40L can be biased towards an initial or basic position as it is shown in view (a) of Figure 7. Such starting or initial position may be an upper end position towards which the pivot frames 40R and 40L may be independently from each other biased by means of, e.g., springs having a suitable configuration as mentioned before.

    [0078] As illustrated by the various views of Figure 7, the pivot frames 40R and 40L and thus, the cutter elements 4 supported thereon may pivot about pivot axis 11 independently from each other into various positions relative to each other, thereby allowing for individual adaption of the cutter element positioned to the skin contour. For example, the separate pivot frames 40R and 40L may pivot in a way similar to the common pivot frame 40 shown in Figure 4, cf. views (c) and (e) of Figure 7, but in addition the pivot frames 40R and 40L also may pivot in opposite angular directions or it is possible that only one pivot frame executes pivotal movement, whereas the other does not, cf. also Fig. 10 and the angles α and β shown therein.

    [0079] As illustrated by Figures 8 and 9, the cutter elements 4 may have an additional degree of freedom. More particularly, the cutter elements 4 may pivot about a pivot axis 12 extending substantially perpendicular to the cutter oscillation axis 8 and substantially transverse to the shaver housing's longitudinal axis 30. Such addition degree of freedom may be achieved, e.g., by means of movably supporting the cutter elements 4 on the pivot frames or pivot frame portions 40R and 40L. For example, the cutter elements 4 may be supported on their pivot frames via a spring arrangement comprising, e.g., spring elements forcing the cutter elements 4 upwards away from the pivot frame 40. Such spring support structure between pivot frames 40 and cutter elements 4 allows the cutter elements 4 to pivot relative to the pivot frames 40 about the aforementioned pivot axis 12. Such additional pivotal degree of freedom about pivot axis 12 can be implemented into the example shown in Figures 3 to 5 where the cutter elements 4 are supported on a common pivot frame 40 and also implemented into the example shown in Figures 6, 7 and 10 where the cutter elements 4 are supported on separate pivot frames 40R and 40L.

    [0080] As can be seen from Figure 8, the cutter elements 4 may pivot about said pivot axis 12 independently from each other. For example, only one of the cutter elements 4 may pivot as shown in views (b) and (c) of Figure 8, or each of the cutter elements 4 may pivot about said pivot axis 12 as shown in view (e) of Figure 8, wherein the cutter elements 4 may pivot into the same angular direction or into opposite directions and/or by the same angle or by different angles.

    [0081] In addition to such pivoting about pivot axis 12, the cutter elements 4 also may be displaced in a linear fashion. For example, the cutter elements 4 may dive along a diving axis extending substantially parallel to the shaver housing's longitudinal axis 30. Such diving may be executed by both cutter elements 4 at the same time as shown by view (d) of Figure 8 or it is also possible that only one of the cutter elemens 4 executes such diving. The cutter elements 4 may be displaced along at least one linear axis independently from each other.

    [0082] As can be seen from Fig. 2, each cutter element 4 can be driven in said oscillating manner by means of an elongated drive transmitter 9 extending from the shaver housing 2 into the shaver head 3 up to the cutter element 4. Such elongated drive transmitter 9 may form a rigid drive pin extending from the interior of the shaver housing 2 to the exterior of the shaver housing 2, that means through an outer shell of the shaver housing 2, if the drive unit includes a motor accommodated within the shaver housing 2. Such motor may be a rotatory electric motor or a magnetic-type linear motor connected to the drive pin in a suitable manner.

    [0083] The said elongated drive transmitter 9 is held in a fixed orientation relative to the shaver housing 2, wherein in particular the elongated drive transmitter 9, with its longitudinal axis 13, may extend substantially parallel to the longitudinal shaver housing axis 30.

    [0084] There may be two elongated drive transmitters 9 when there are two cutter elements 4, such elongated drive transmitters 9 extending in parallel to each other, or more than two elongated drive transmitters 9 when there are more than two cutter elements 4.

    [0085] The elongated drive transmitters 9 are each driven by the aforementioned drive unit's motor to oscillate uniaxially relative to the shaver housing along an axis 121 perpendicular to the longitudinal axis 13 of the elongated drive transmitter 9 and substantially parallel to the longitudinal extension of the elongated cutter elements 4, cf. Fig. 4 and 5.

    [0086] The elongated drive transmitter 9 may extend from the shaver housing 2 into the cutter element 4 so that the projecting end of the elongated drive transmitter 9 extends within an interior space provided in the cutter element 4.

    [0087] As can be seen from Fig. 5, 14 and 15, the elongated drive transmitter 9 is coupled to the cutter element 4 by means of a pivot joint 10 which may include a block-shaped or sleeve-like connector 15 forming a ball-joint piece engaging with the cutter element 4, as shown in Fig. 14. Said ball-joint piece may be a hard plastic element or made from other resistive bearing materials such as metal. The said connector 15 directly connects an end portion of the elongated drive transmitter 9 to the cutter element 4, wherein said end portion of the elongated drive transmitter 9 may be received in said connector piece 15 mounted to the cutter element 4.

    [0088] As can be seen from Fig. 14, the connector 15 may have a transmitter recess 17 that may be formed as an elongated, slot-like hole allowing to slide the connector 15 onto the elongated drive transmitter 9.

    [0089] The connector 15 can be provide with a spherical support surface 122 which may form a spherical cap or a hemisphere or almost a complete sphere. The cutter element 4 is provided with a corresponding spherical support surface 123 cooperating and engaging with the spherical support surface 123 of the ball-joint piece mounted on the elongated drive transmitter 9. The spherical support surface 122 of the connector 15 may be formed convex or as an outer surface, whereas the spherical support surface 123 of the cutter element 4 may be formed concave or as an inner support surface. Basically, a contrary configuration with the connector's support surface 122 being concave and the cutter element's support surface 123 being convex is possible. Due to the dimensions of the cutter element 4 and the elongated drive transmitter 9, the aforementioned configuration with convex support surface 122 on the drive transmitter side and the concave support surface on the cutter element side allows for a more space-saving, compact configuration.

    [0090] The said spherical support surface 123 of the cutter element 4 may be formed directly by body walls of the cutter element. In the alternative, the cutter element may include a support or bearing insert or attachment which is fixedly attached to the cutter element 4 and which forms the said spherical support surface 123.

    [0091] The said spherical support surfaces 122 and 123 snuggly fit onto each other so that the connector 15 is held at the cutter element 4 without play, at least in the direction of the cutter oscillation axis 8 along which the cutter element 4 is driven in an oscillating manner, such cutter oscillation axis 8 being substantially parallel to the drive axis 121 of the elongated drive transmitter 9. More particularly, the connector 15, due to the spherical support surfaces 122 and 123, may pivot relative to the cutter element 4 about pivot axes 11 and 12 extending perpendicular to each other and perpendicular to the longitudinal axis 13 of the elongated driver transmitter 9. The said pivot axes 11 and 12 can be seen from Fig. 3 and substantially extend through a center portion of the head of connector 15, more particularly through the center of curvatures of the spherical support surfaces 122 and 123.

    [0092] In a direction substantially parallel to the aforementioned cutter oscillation axis 8, the elongated drive transmitter 9 is rigidly, undisplaceably received within the transmitter recess 17 of connector 15 and thus, the elongated drive transmitter 9 is exactly held in position relative to the cutter element 4. In other words, along the cutter oscillation axis 8, no relative movement of the cutter element 4 to the elongated drive transmitter 9 is possible and the cutter element 4 instantaneously follows any movement of the elongated drive transmitter 9 in said direction of the cutter oscillation axis 8 without play.

    [0093] In a direction transverse to said cutter oscillation axis 8 and transverse to the longitudinal axis 13 of the elongated drive transmitter 9, there is, however, play and the elongated drive transmitter 9 may move relative to the cutter element 4. According to the example shown in Fig. 14, such degree of freedom of the cutter element 4 relative to the elongated drive transmitter 9 in the aforementioned transverse direction, is achieved by means of the elongated, slot-like contour of the transmitter recess 17 formed in the connector 15. As shown by Fig. 14, the length of the slot-like hole forming the transmitter recess 17 is considerably larger than the diameter or thickness of the elongated drive transmitter 9. For example, the length of the slot-like transmitter recess 17 may be at least 150 % of the thickness of the elongated drive transmitter 9, wherein it is also possible to have a slot length of 200 % or 300% or more of the thickness of said elongated drive transmitter 9.

    [0094] As can be seen from view (b) of Fig. 14, the width of said elongated slot-like hole of the transmitter recess 17 more or less exactly corresponds to the thickness of the drive transmitter 9 such that the elongated drive transmitter 9 may move only along the length direction of said slot.

    [0095] The angular orientation of the slot-like hole of the transmitter recess 17, that means the angular orientation of the connector 15 is controlled by means of a rotation preventer portion 19 of said connector 15 which rotation preventer portion 19 prevents rotation of the connector relative to the cutter element 4 about an axis substantially parallel to the longitudinal axis 13 of the elongated drive transmitter 9. More particularly, the connector 15 may be provided with projecting and/or recessed engagement portions 124 arranged on opposite sides of the head of the ball-joint piece of connector 15 which projecting engagement portions 124 are received in slot-like recesses formed on opposite sides of the spherical support surface 123 of the cutter element 4. The said projection portions 124 may be arranged in a plane defined by the lengthwise extension of the slot-like hole of the transmitter recess 17. As can be seen from view (a) of Fig. 14, the projecting portions 124 of the rotation preventer are aligned with the longitudinal access of said slot of the transmitter recess 17 and/or aligned with the pivot axis 11 defined by the pivot joint 10 and extending transverse to the cutter oscillation axis 8 and the longitudinal axis 13 of the elongated drive transmitter 9.

    [0096] The said projecting portions 124 projecting from the spherical support surface 122 of the connector 15 may form axial stubs to allow for rotation of the connector 15 about pivot axis 11 relative to cutter element 4.

    [0097] As can be seen from view (c) of Fig. 14, the recessed portion 125 formed in the spherical surface 123 of the cutter element 4 in terms of a slot-like, elongated hole allows for movements of the connector 15 relative to the cutter element 4, in particular in terms of pivoting movements about pivot axis 12 extending substantially parallel to the cutter oscillation axis 8 and substantially perpendicular to the aforementioned other pivot axis 11. Thus, when shaver head 3 pivots about shaver pivot axis 7, connector 15 may move with the respective cutter element 4 executing the aforementioned shaver head pivotal movement, wherein misalignment of the cutter element 2 and the connector 15 relative to the elongated drive transmitter 9 is compensated.

    [0098] Shaver head 3 including cutter element 4 may pivot relative to the elongated drive transmitter 9 held in fixed angular orientation. Due to such shaver head pivotal movements, there can be relative movements of the connector 15 relative to elongated drive transmitter 9, wherein said elongated drive transmitter 9 slides within the aforementioned slot-like hole of the transmitter recess 17.

    [0099] The connector 15 does not necessarily have spherical support surfaces, but may have a cylindrical or box-like or block-like shape, wherein the connector 15 may have rotation preventer portions 19 in terms of axial stub-like projections 124 which serve as pivot axes. In other words, the connector 15 is held with their projecting portions 124 at the cutter element 4 and may pivot relative to said cutter element 4 about said projecting portions 124 forming axial stubs. Said projecting portions 124 may extend to opposite sides and may be aligned with the aforementioned transverse axis 11 of pivot joint 10.

    [0100] As can be seen from Fig. 15, the connector 15 also may be rigidly fixed to the elongated drive transmitter 9, wherein the connector 15 of the example shown in Fig. 15 may be provided with spherical support surfaces 122 similar to the example shown in Fig. 2 to 5. Such spherical support surfaces 122 engage with corresponding spherical support surfaces 123 of cutter element 4.

    [0101] The transmitter recess 17 of connector 15 may have a cross-section basically corresponding to the cross-section of the elongated drive transmitter, wherein the transmitter recess 17 may be formed as a cylindrical hole receiving cylindrical drive transmitter 9. Thus, the connector 15 is fixedly mounted onto the elongated drive transmitter 9 to exactly follow any movement of the elongated drive transmitter 9 in directions transverse to the longitudinal axis 13 of the drive transmitter 9.

    [0102] As can be seen from Fig. 15, the connector 15 is provided with flattening portions or bevelment portions 126 in the spherical support surface 122. Such flattening portions 126 may extend on opposite sides of the connector 15, in particular on sides of connector 15 facing the transversely extending pivot axis 11. Such flattening portions 126 provide for play against the support surface of the interior transmitter recess 16 of the cutter element 4 and allows for pivoting and or displacement of the cutter element 4 relative to the connector 15 and thus to the elongated drive transmitter 9 in a plane containing the elongated drive transmitter as longitudinal axis 13 and the aforementioned transversely extending pivot axis 11.

    [0103] Due to the aforementioned flattening portions 126, the head of connector 15 may be formed as a sort of plate portion having parallels, flat side faces and a curved, in particular spherically-contoured surface there between.

    [0104] As can be seen from Fig. 15, the flattened portions 126 may be aligned with the cutter oscillation axis 8 and with the longitudinal axis 13 of elongated drive transmitter 9.

    [0105] The spherically-contoured surfaces of the connector 15 are facing the direction of the cutter oscillation axis 8 and snuggly fit into the respective spherically contoured surfaces 123 of the cutter element 4. Thus, along the oscillation axis 8, the cutter element 4 follows the movements of the elongated drive transmitter 9 instantaneously without play, cf. for example Fig. 15.

    [0106] As shown by Fig. 13, the elongated drive transmitter 9 may be received directly within the interior transmitter recess 16 of cutter element 4. The elongated drive transmitter 9 may extend into said interior transmitter recess 16 formed in the cutter element 4 in which the end portion of the elongated drive transmitter 9 is received pivotably about the aforementioned pair of pivot axes 11 and 12 and is placeable in the direction transverse to cutter oscillation axis 8 and transverse to the longitudinal axis 13 of the drive transmitter 9. Said interior transmitter recess 16 of the cutter element 4 may form an elongated, slot-like hole having convex sidewalls defining the longer side of the slot and defining a cap the width of which substantially corresponds to the thickness of the end portion of the elongated drive transmitter 9, whereas the length of which is substantially larger than the thickness of the elongated drive transmitter 9.

    [0107] The convex contouring of the aforementioned sidewalls may have a constant cross-section along the length of the slot-like hole. In other words, said convex sidewalls may have a curved shape, in particular the same curved shape in cross-sectional planes perpendicular to the length of the slot, whereas there is no curvature in cross-sectional planes parallel to the longitudinal direction of the slot.

    [0108] Such curvature of said sidewalls defining the longer sides of the slot-like interior transmitter recess 16 may be adapted such that the elongated drive transmitter 9 may pivot relative to the cutter element 4 about pivot axis 11 extending transverse to the longitudinal axis 13 of the drive transmitter 9 and transverse to the cutter oscillation axis 8.

    [0109] In addition, the cutter element 4 may pivot relative to the elongated drive transmitter 9 about pivot axis 12 substantially parallel to the cutter oscillation axis 8. When pivoting about said pivot axis 12, the elongated drive transmitter 9 slides within the slot-like interior transmitter recess 16.

    [0110] In addition, the elongated slot-like shape of the transmitter recess 16 allows for displacement of the cutter element 4 along the direction of pivot axis 11.

    [0111] As can be seen from Fig. 13, the cutter element 4, more particularly the interior transmitter recess 16 thereof has no play against the elongated drive transmitter 9 in the direction of the cutter oscillation axis 8. The curved, bowed, convex sidewalls define a gap width corresponding to the thickness of the elongated drive transmitter 9 in a cross-sectional plane containing the cutter oscillation axis 8.

    [0112] Said pivot joint 10 does not need to be rigidly, fixedly connected to said cutter element 4, but may be connected to a cutter element spring 128 connected to the cutter element body of cutter element 4 and elastically biasing the cutter element body against the shear foil 5 of the shaver head 3.

    [0113] As can be seen from Fig. 13 said cutter element spring 128 may include at least one support arm elastically biased against and connected to the cutter element body, said biasing force trying to force the cutter element body away from the support arm and thus - according to Fig. 19 upwards - against the shear foil.

    [0114] The said cutter element spring 128 and the cutter element body together may form a cutter element cartridge inserted into the shaver head 3, wherein the cutter element body may be guided by means of guide pins 129 or other suitable guiding contours so as to allow a floating or diving movement of the cutter element body in a direction - roughly speaking - substantially parallel to the longitudinal axis 13 of the drive transmitter 9 and/or substantially perpendicular to the skin contact side of the shaver head 3.

    [0115] As can be seen from Fig. 13, the aforementioned cutter element spring 128 is coupled to the elongated drive transmitter 9 by means of pivot joint 10. Pivot joint 10 may be formed in various ways including the option to use a connector 15 having a slot-like or a cylindrical receiving recess for receiving the elongated drive transmitter 9, or direct engagement similar to the example of Fig. 14 and 15.

    [0116] The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."


    Claims

    1. An electric shaver, comprising a shaver housing (2), a shaver head (3) including at least one cutter element (4) drivable by a drive unit in an oscillating manner along a cutter oscillation axis (8) and a non-cutting auxiliary function element (20) for applying an auxiliary skin or hair treatment other than hair cutting to a skin portion to be shaved, said auxiliary function element (20) having an applicator head (21) positioned aside the cutter element (4) characterized in that said shaver head (3) and/or said at least one cutter element (4) is supported pivotably relative to said auxiliary function element (20) at least about a pivot axis (7) parallel to said cutter oscillation axis (8).
     
    2. Electric shaver according to the preceding claim, wherein said auxiliary function element (20) is rigidly supported to extend in a fixed orientation and/or fixed position relative to said shaver housing (2) and/or relative to a shaver head frame or shaver head housing.
     
    3. Electric shaver according to anyone of the preceding claims, wherein said auxiliary function element (20) includes at least one of the following: a skin cooler, a skin heater, a liquid applicator for applying a liquid to said skin portion, a gas applicator for applying a gas onto said skin, a lubricator for applying lubricant to said skin portion, a powder applicator for applying a powder onto said skin portion, a foam applicator for applying a foam onto said skin portion, a gel applicator for applying a gel onto said skin portion.
     
    4. Electric shaver according to anyone of the preceding claims, wherein the applicator head (21) of said auxiliary function element (20) includes an uncovered contact surface (22) for contacting said skin portion, and/or forms a portion of the outer contour of said shaver head (3).
     
    5. Electric shaver according to anyone of the preceding claims, wherein said auxiliary function element (20) extends from said shaver housing (2) through said shaver head (3) with said applicator head (21) forming a part of a skin contact side of said shaver head (3) and/or a front side of said shaver head (3) turned away from the shaver housing (2).
     
    6. Electric shaver according to anyone of the preceding claims, wherein said shaver head (3) includes a plurality of cutter elements (4) each of which is drivable in an oscillating manner along a cutter oscillation axis (8) wherein each of said plurality of cutter elements (4) is pivotably supported about at least said/a pivot axis (7) parallel to said cutter oscillation axes (8), wherein at least one of the following (i) to (iii) is provided:

    (i) the applicator head (21) of said auxiliary function element (20) is positioned between a pair of said plurality cutter elements (4);

    (ii) said plurality of cutter elements (4) are pivotable independently from each other about said/a pivot axis (7) parallel to said cutter oscillation axis (8) and/or are pivotable relative to each other about said/a pivot axis (7) parallel to said cutter oscillation axis (8);

    (iii) said drive unit is adapted to oscillate said plurality cutter elements (4) in opposite directions reverse to each other.


     
    7. Electric shaver according to anyone of the preceding claims, wherein said at least one/ each cutter element is multi-axially pivotably supported relative to said auxiliary function element (20) and/or relative to a shaver head frame (24) of said shaver head (2) about a pair of pivot axes (11, 12) extending transverse to each other and transverse to a longitudinal axis (23) of said shaver housing (2).
     
    8. Electric shaver according to anyone of the preceding claims, wherein said at least one/ each cutter element (4) is supported displaceable relative to said auxiliary function element (20) along at least one displacement axis (25) extending transverse to said cutter oscillation axis (8).
     
    9. Electric shaver according to anyone of the preceding claims, wherein said shaver head (2) including said at least one cutter element (4) is pivotably supported relative to said shaver housing (2) about a shaver head pivot axis (7).
     
    10. Electric shaver according to the preceding claim in combination with claim 7, wherein said shaver head pivot axis (7) is spaced apart from said pair of pivot axes (11, 12) about which the at least one cutter element is pivotable, and/or wherein said pair of pivot axes (11, 12) are spaced further apart from said shaver head (3) than said shaver head pivot axis (7).
     
    11. Electric shaver according to anyone of the preceding claims, wherein said drive unit includes at least one elongated drive transmitter (9) extending from said shaver housing (2) into said shaver head (3) and coupled to said at least one cutter element (4), said elongated drive transmitter (9) is coupled to said cutter element (4) by means of a pivot joint (10) providing for a pair of pivot axes (11, 12) extending perpendicular to each other and transverse to a longitudinal axis (13) of said elongated drive transmitter (9), wherein said pivot joint (10) is displaceably mounted to said elongated drive transmitter (9) and/or to said cutter element (4) to allow for displacement of said pivot joint (10) relative to said elongated drive transmitter (9) and/or to said cutter element (4) in a direction transverse to said cutter oscillation axis (8) and transverse to said longitudinal axis (13) of said elongated drive transmitter (9).
     
    12. Electric shaver according to anyone of the preceding claims, wherein said drive unit includes at least one elongated drive transmitter (9) extending from said shaver housing (2) into said shaver head (3) and coupled to said at least one cutter element (4), said elongated drive transmitter (9) is coupled to said cutter element (4) by means of a pivot joint (10) wherein said shaver head (3) and/or said at least one cutter element (4) is supported pivotably relative to said pivot joint and/or relative to said drive transmitter at least about a pivot axis (7) parallel to said cutter oscillation axis (8).
     
    13. Electric shaver according to the preceding claim, wherein said elongated drive transmitter (9) forms a rigid drive pin and/or is supported to extend in a fixed orientation and to oscillate uniaxially relative to said shaver housing (2) along an axis perpendicular to said longitudinal axis (13) of said elongated drive transmitter (9) and/or perpendicular to a longitudinal axis (23) of said shaver housing (2).
     
    14. Electric shaver according to anyone of claims 1 to 12, wherein said elongated drive transmitter (9) extends into an interior transmitter recess (16) formed in said cutter element (4) in which an end portion of said elongated drive transmitter (9) is received pivotably about said pair of pivot axes (11, 12) and displaceable in said direction transverse to said cutter oscillation axis (8) and transverse to said longitudinal axis (13) of said elongated drive transmitter (9), wherein at least one of the following (iv) to () is provided:

    (iv) said elongated drive transmitter (9) is in direct engagement and/or direct contact with body walls of said cutter element (4) defining said interior transmitter recess (16) forming said pivot joint (10), wherein said interior transmitter recess (16) of the cutter element (4) forms an elongated, slot-like hole having convex side walls defining a gap the width of which substantially corresponds to a thickness of said elongated drive transmitter (9) and the length of which is substantially larger than said thickness of said elongated drive transmitter (9), said width extending parallel to said cutter oscillation axis (8) and said length extending transverse to said cutter oscillation axis (8) and transverse to the longitudinal axis (13) of said elongated drive transmitter (9);

    (v) wherein said pivot joint (10) includes a block- and/or sleeve-like connector (15) connecting an end portion of said elongated driver transmitter (9) to said cutter element (4), wherein said end portion of said elongated drive transmitter (9) is received in a transmitter recess (17) in said connector piece (15) mounted to said cutter element (4), said transmitter recess (17) of said connector (15) forming an elongated, slot-like hole the width of which substantially corresponds to a thickness of the elongated drive transmitter (9) and the length of which is substantially larger than said thickness of said elongated drive transmitter (9) to allow for displacement of said connector (15) relative to said elongated drive transmitter (9) in the direction transverse to said cutter oscillation axis (8) and transverse to said longitudinal axis (13) of said elongated drive transmitter (9);

    (vi) said pivot joint (10) includes a block- and/or sleeve-like connector (15) connecting an end portion of said elongated driver transmitter (9) to said cutter element (4), said sleeve-like connector (15) of the pivot joint (10) forming a ball joint piece having a spherical support surface (122) in pivotable engagement with a spherical support surface (123) of the cutter element (4), wherein said spherical support surface of said connector (15) is provided with flattening and/or bevelment portions providing for play of the connector (15) relative to the cutter element (4) and allowing for displacement of said connector (15) relative to said elongated drive transmitter (9) in the direction transverse to said cutter oscillation axis (8) and transverse to said longitudinal axis (13) of said elongated drive transmitter (9).


     
    15. A shaver head (3) for an electric shaver of anyone of claims 1 to 13, comprising a shaver head frame and a cutter element (4) movable relative to said shaver head frame and drivable in an oscillating manner along a cutter oscillation axis (8), said shaver head frame having an accomodating recess for accomodating a non-cutting auxiliary function element (20) for applying an auxiliary skin treatment to a skin portion to be shaved with an applicator head (21) positioned aside the cutter element (4), characterized in that said at least one cutter element (4) is supported pivotably relative to said auxiliary function element (20) at least about a pivot axis (7) parallel to said cutter oscillation axis (8).
     
    16. A shaver head (3) for an electric shaver of anyone of claims 1 to 13, comprising a shaver head frame provided with a shaver head pivot axis (7) for pivotably supportig said shaver head, and a cutter element (4) movable relative to said shaver head frame and drivable in an oscillating manner along a cutter oscillation axis (8), said shaver head frame having an accomodating recess for accomodating an auxiliary function element (20) for applying an auxiliary skin treatment to a skin portion to be shaved with an applicator head (21) positioned aside the cutter element (4), characterized in that said accomodating recess is adapted to allow pivoting of said shaver head (3) about said shaver head pivot axis (7) relative to said auxiliary function element (20) held in fixed position.
     


    Ansprüche

    1. Elektrischer Rasierer, umfassend ein Rasierergehäuse (2), ein Rasiererkopfstück (3) mit mindestens einem Schneidelement (4), das durch eine Antriebseinheit in einer oszillierenden Art und Weise entlang einer Schneidenoszillationsachse (8) antreibbar ist, und einen nicht schneidenden Zusatzfunktionselement (20) zum Anwenden einer Hilfshaut- oder -haarbehandlung, die kein Haarschneiden ist, auf einen zu rasierenden Hautabschnitt, wobei das Zusatzfunktionselement (20) einen Applikatorkopf (21) aufweist, der neben dem Schneidelement (4) angeordnet ist, dadurch gekennzeichnet, dass das Rasiererkopfstück (3) und/oder das wenigstens eine Schneidelement (4) im Verhältnis zu dem Zusatzfunktionselement (20) um mindestens eine Drehachse (7) parallel zur Schneidenoszillationsachse (8) drehbar gelagert ist.
     
    2. Elektrischer Rasierer nach dem vorstehenden Anspruch, wobei das Zusatzfunktionselement (20) starr gelagert ist, um sich in einer festen Ausrichtung und/oder in einer festen Position im Verhältnis zu dem Rasierergehäuse (2) und/oder im Verhältnis zu einem Rasiererkopfstückrahmen oder Rasierkopfstückgehäuse zu erstrecken.
     
    3. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei das Zusatzfunktionselement (20) mindestens eines der folgenden einschließt: eine Hautkühleinrichtung, eine Hauterwärmungseinrichtung, einen Flüssigkeitapplikator zum Auftragen einer Flüssigkeit auf den Hautabschnitt, einen Gasapplikator zum Auftragen eines Gases auf die Haut, eine Schmiereinrichtung zum Auftragen von Gleitmittel auf den Hautabschnitt, einen Pulverapplikator zum Aufbringen eines Pulvers auf den Hautabschnitt, einen Schaumapplikator zum Auftragen eines Schaums auf den Hautabschnitt, einen Gelapplikator zum Auftragen eines Gels auf den Hautabschnitt.
     
    4. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei der Applikatorkopf (21) des Zusatzfunktionselements (20) eine freiliegende Kontaktfläche (22) zum Kontaktieren des Hautabschnitts einschließt und/oder einen Abschnitt der Außenkontur des Rasiererkopfstücks (3) bildet.
     
    5. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei sich das Zusatzfunktionselement (20) von dem Rasierergehäuse (2) durch das Rasiererkopfstück (3) erstreckt, wobei der Applikatorkopf (21) einen Teil einer Hautkontaktseite des Rasiererkopfstücks (3) und/oder einer vorderen Seite des Rasiererkopfstücks (3) bildet, die von dem Rasierergehäuse (2) abgewandt ist.
     
    6. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei das Rasiererkopfstück (3) eine Vielzahl von Schneidelementen (4) einschließt, die jeweils in einer oszillierenden Art und Weise entlang einer Schneidenoszillationsachse (8) antreibbar ist, wobei jedes der Vielzahl von Schneidelementen (4) um mindestens die/eine Drehachse (7) parallel zu der Schneidenoszillationsachse (8) drehbar gelagert ist, wobei mindestens eines der folgenden (i) bis (iii) vorgesehen ist:

    (i) der Applikatorkopf (21) des Zusatzfunktionselements (20) ist zwischen einem Paar der Vielzahl von Schneidelementen (4) angeordnet;

    (ii) die mehreren Schneidelemente (4) sind unabhängig voneinander um die/eine Drehachse (7) parallel zur Schneidenoszillationsachse (8) drehbar und/oder sind im Verhältnis zueinander um die/eine Drehachse (7) parallel zur Schneidenoszillationsachse (8) drehbar;

    (iii) die Antriebseinheit ist dazu ausgelegt, die Vielzahl von Schneidelementen (4) in zueinander entgegengesetzten Richtungen oszillieren zu lassen.


     
    7. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei das mindestens eine/jedes Schneidelement mehrachsig im Verhältnis zu dem Zusatzfunktionselement (20) und/oder im Verhältnis zu einem Rasiererkopfstückrahmen (24) des Rasiererkopfstücks (2) um ein Paar Drehachsen (11, 12) drehbar ist, die sich quer zueinander und quer zu einer Längsachse (23) des Rasierergehäuses (2) erstrecken.
     
    8. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei das mindestens eine/jedes Schneidelement (4) entlang mindestens einer Verlagerungsachse (25), die sich quer zur Schneidenoszillationsachse (8) erstreckt, im Verhältnis zu dem Zusatzfunktionselement (20) verlagerbar gelagert ist.
     
    9. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei das Rasiererkopfstück (2), welches das mindestens eine Schneidelement (4) einschließt, im Verhältnis zu dem Rasierergehäuse (2) um eine Rasiererkopfstückdrehachse (7) drehbar gelagert ist.
     
    10. Elektrischer Rasierer nach dem vorstehenden Anspruch in Kombination mit Anspruch 7, wobei die Rasiererkopfstückdrehachse (7) von dem Paar Drehachsen (11, 12) beabstandet ist, um die das mindestens eine Schneidelement drehbar ist, und/oder wobei das Paar Drehachsen (11, 12) weiter von dem Rasiererkopfstück (3) als von der Rasiererkopfstückdrehachse (7) beabstandet sind.
     
    11. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei die Antriebseinheit mindestens eine langgestreckte Antriebsübertragungseinrichtung (9) einschließt, die sich von dem Rasierergehäuse (2) in das Rasiererkopfstück (3) erstreckt und an das mindestens eine Schneidelement (4) gekoppelt ist, wobei die langgestreckte Antriebsübertragungseinrichtung (9) mittels eines Drehgelenks (10) an das Schneidelement (4) gekoppelt ist, das ein Paar Drehachsen (11, 12) bereitstellt, die sich senkrecht zueinander und quer zu einer Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) erstrecken, wobei das Drehgelenk (10) verlagerbar an der langgestreckten Antriebsübertragungseinrichtung (9) und/oder dem Schneidelement (4) angebracht ist, um eine Verlagerung des Drehgelenks (10) im Verhältnis zu der langgestreckten Antriebsübertragungseinrichtung (9) und/oder dem Schneidelement (4) in einer Richtung quer zu der Schneidenoszillationsachse (8) und quer zu der Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) zu ermöglichen.
     
    12. Elektrischer Rasierer nach einem der vorstehenden Ansprüche, wobei die Antriebseinheit mindestens eine langgestreckte Antriebsübertragungseinrichtung (9) einschließt, die sich von dem Rasierergehäuse (2) in das Rasiererkopfstück (3) erstreckt und an das mindestens eine Schneidelement (4) gekoppelt ist, wobei die langgestreckte Antriebsübertragungseinrichtung (9) mittels eines Drehgelenks (10) an das Schneidelement (4) gekoppelt ist, wobei das Rasiererkopfstück (3) und/oder das wenigstens eine Schneidelement (4) im Verhältnis zu dem Drehgelenk und/oder im Verhältnis zu der Antriebsübertragungseinrichtung mindestens um eine Drehachse (7) parallel zur Schneidenoszillationsachse (8) drehbar gelagert ist.
     
    13. Elektrischer Rasierer nach dem vorstehenden Anspruch, wobei die langgestreckte Antriebsübertragungseinrichtung (9) einen starren Antriebsstift bildet und/oder so gelagert ist, dass sie sich in einer festen Ausrichtung erstreckt und im Verhältnis zu dem Rasierergehäuse (2) entlang einer Achse lotrecht zu der Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) und/oder lotrecht zu einer Längsachse (23) des Rasierergehäuses (2) uniaxial oszilliert.
     
    14. Elektrischer Rasierer nach einem der Ansprüche 1 bis 12, wobei sich die langgestreckte Antriebsübertragungseinrichtung (9) in eine innere Übertragungseinrichtungsaussparung (16) erstreckt, die in dem Schneidelement (4) ausgebildet ist und in der ein Endabschnitt der langgestreckten Antriebsübertragungseinrichtung (9) um das Paar Drehachsen (11, 12) drehbar und in der Richtung quer zur Schneidenoszillationsachse (8) und quer zur Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) verlagerbar aufgenommen ist, wobei mindestens eines der folgenden (iv) bis () vorgesehen ist:

    (iv) die langgestreckte Antriebsübertragungseinrichtung (9) steht in direktem Eingriff und/oder in direktem Kontakt mit Körperwänden des Schneideelements (4), welche die innere Übertragungseinrichtungsaussparung (16) definieren, die das Drehgelenk (10) bildet, wobei die innere Übertragungseinrichtungsaussparung (16) des Schneidelements (4) ein langgestrecktes, schlitzartiges Loch mit konvexen Seitenwänden bildet, die einen Spalt definieren, dessen Breite im Wesentlichen einer Dicke der langgestreckten Antriebsübertragungseinrichtung (9) entspricht und dessen Länge im Wesentlichen größer als die Dicke der langgestreckten Antriebsübertragungseinrichtung (9) ist, wobei sich die Breite parallel zu der Schneidendrehachse (8) erstreckt und sich die Länge quer zu der Schneidenoszillationsachse (8) und quer zu der Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) erstreckt;

    (v) das Drehgelenk (10) schließt einen block- und/oder hülsenartigen Verbinder (15) ein, der einen Endabschnitt der langgestreckten Antriebsübertragungseinrichtung (9) mit dem Schneidelement (4) verbindet, wobei der Endabschnitt der langgestreckten Antriebsübertragungseinrichtung (9) in einer Übertragungseinrichtungsausnehmung (17) in dem Verbindungsteil (15) aufgenommen wird, das an dem Schneidelement (4) angebracht ist, wobei die Übertragungseinrichtungsausnehmung (17) des Verbinders (15) ein langgestrecktes, schlitzartiges Loch bildet, dessen Breite im Wesentlichen einer Dicke der langgestreckten Antriebsübertragungseinrichtung (9) entspricht und deren Länge im Wesentlichen größer als die Dicke der langgestreckten Antriebsübertragungseinrichtung (9) ist, um die Verlagerung des Verbinders (15) im Verhältnis zu der langgestreckten Antriebsübertragungseinrichtung (9) in der Richtung quer zu der Schneidenoszillationsachse (8) und quer zu der Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) zu ermöglichen;

    (vi) das Drehgelenk (10) schließt einen block- und/oder hülsenartigen Verbinder (15) ein, der einen Endabschnitt der langgestreckten Antriebsübertragungseinrichtung (9) mit dem Schneidelement (4) verbindet, wobei der hülsenartige Verbinder (15) des Drehgelenks (10) ein Kugelgelenkstück mit einer kugelförmigen Auflagefläche (122) in drehbarem Eingriff mit einer kugelförmigen Auflagefläche (123) des Schneidelements (4) bildet, wobei die kugelförmige Auflagefläche des Verbinders (15) mit Abflachungs- und/oder Anschrägungsabschnitten versehen ist, die Spiel des Verbinders (15) im Verhältnis zu dem Schneidelement (4) bereitstellen und eine Verlagerung des Verbinders (15) im Verhältnis zu der langgestreckten Antriebsübertragungseinrichtung (9) in der Richtung quer zu der Schneidenoszillationsachse (8) und quer zu der Längsachse (13) der langgestreckten Antriebsübertragungseinrichtung (9) ermöglichen.


     
    15. Rasiererkopfstück (3) für einen elektrischen Rasierer nach einem der Ansprüche 1 bis 13, umfassend einen Rasiererkopfstückrahmen, und ein Schneidelement (4), das im Verhältnis zu dem Rasiererkopfstückrahmen bewegbar und in einer oszillierenden Art und Weise entlang einer Schneidenoszillationsachse (8) antreibbar ist, wobei der Rasiererkopfstückrahmen eine Aufnahmeausnehmung zum Aufnehmen eines nicht schneidenden Zusatzfunktionselements (20) zum Auftragen einer zusätzlichen Hautbehandlung auf einen Hautabschnitt aufweist, der mit einem Applikatorkopf (21) rasiert werden soll, der neben dem Schneidelement (4) angeordnet ist, dadurch gekennzeichnet, dass das mindestens eine Schneidelement (4) im Verhältnis zu dem Zusatzfunktionselement (20) mindestens um eine Drehachse (7) parallel zu der Schneidenoszillationsachse (8) drehbar gelagert ist.
     
    16. Rasiererkopfstück (3) für einen elektrischen Rasierer nach einem der Ansprüche 1 bis 13, umfassend einen Rasiererkopfstückrahmen, der mit einer Rasiererkopfstückdrehachse (7) zum drehbaren Lagern des Rasiererkopfstücks versehen ist, und ein Schneidelement (4), das im Verhältnis zu dem Rasiererkopfstückrahmen bewegbar und in einer oszillierenden Art und Weise entlang einer Schneidenoszillationsachse (8) antreibbar ist, wobei der Rasiererkopfstückrahmen eine Aufnahmeausnehmung zum Aufnehmen eines Zusatzfunktionselements (20) zum Auftragen einer zusätzlichen Hautbehandlung auf einen Hautabschnitt aufweist, der mit einem Applikatorkopf (21) rasiert werden soll, der neben dem Schneidelement (4) angeordnet ist, dadurch gekennzeichnet, dass die Aufnahmeausnehmung dazu ausgelegt ist, ein Drehen des Rasiererkopfstücks (3) um die Rasiererkopfstückdrehachse (7) im Verhältnis zu dem Hilfsfunktionselement (20) zu ermöglichen, das in fixierter Position gehalten wird.
     


    Revendications

    1. Rasoir électrique, comprenant un boîtier de rasoir (2), une tête de rasoir (3) comprenant au moins un élément de coupe (4) pouvant être entraînée par une unité d'entraînement d'une manière oscillante le long d'un axe d'oscillation de lames (8) et un élément de fonction auxiliaire non coupante (20) pour l'application d'un traitement auxiliaire sur la peau ou des cheveux autre que la coupe de cheveux à une partie de la peau destinée à être rasée, ledit élément de fonction auxiliaire (20) ayant une tête applicatrice (21) positionnée à côté de l'élément de coupe (4) caractérisé en ce que ladite tête de rasoir (3) et/ou ledit au moins un élément de coupe (4) est soutenu de façon pivotante par rapport audit élément de fonction auxiliaire (20) au moins autour d'un axe de pivotement (7) parallèle audit axe d'oscillation de lames (8).
     
    2. Rasoir électrique selon la revendication précédente, dans lequel ledit élément de fonction auxiliaire (20) est supporté rigidement pour s'étendre dans une orientation fixe et/ou une position fixe par rapport audit boîtier de rasoir (2) et/ou par rapport à un cadre de tête de rasoir ou un boîtier de tête de rasoir.
     
    3. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ledit élément de fonction auxiliaire (20) comprend au moins l'un des éléments suivants : un refroidisseur pour la peau, un chauffage de la peau, un applicateur de liquide pour appliquer un liquide sur ladite partie de peau, un applicateur de gaz pour appliquer un gaz sur ladite peau, un graisseur pour appliquer du lubrifiant sur ladite partie de peau, un applicateur de poudre pour appliquer une poudre sur ladite partie de peau, un applicateur de mousse pour appliquer une mousse sur ladite partie de peau, un applicateur de gel pour appliquer un gel sur ladite partie de peau.
     
    4. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel la tête d'applicateur (21) dudit élément de fonction auxiliaire (20) comprend une surface de contact découverte (22) pour venir en contact avec ladite partie de peau, et/ou forme une partie du contour extérieur de ladite tête de rasoir (3).
     
    5. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ledit élément de fonction auxiliaire (20) s'étend depuis ledit boîtier de rasoir (2) à travers ladite tête de rasoir (3), avec ladite tête d'applicateur (21) formant une partie d'un côté de contact avec la peau de ladite tête de rasoir (3) et/ou un côté avant de ladite tête de rasoir (3) tournée à l'opposé du boîtier de rasoir (2).
     
    6. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ladite tête de rasoir (3) comprend une pluralité d'éléments de coupe (4) dont chacun peut être entraîné de manière oscillante le long d'un axe d'oscillation de lames (8) dans lequel chacun de ladite pluralité d'éléments de coupe (4) est soutenu de manière pivotante autour d'au moins ledit/un axe de pivotement (7) parallèle audit axe d'oscillation de lames (8), dans lequel au moins l'un parmi les suivants (i) à (iii) est fourni :

    (i) la tête d'applicateur (21) dudit élément de fonction auxiliaire (20) est positionnée entre une paire de ladite pluralité d'éléments de coupe (4) ;

    (ii) ladite pluralité d'éléments de coupe (4) peuvent pivoter indépendamment l'un de l'autre autour dudit/d'un axe de pivotement (7) parallèle audit axe d'oscillation de lames (8) et/ou peuvent pivoter l'un par rapport à l'autre autour dudit/d'un axe de pivotement (7) parallèlement audit axe d'oscillation de lames (8) ;

    (iii) ladite unité d'entraînement est adaptée pour faire osciller ladite pluralité d'éléments de coupe (4) dans des directions opposées l'une par rapport à l'autre.


     
    7. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un/chaque élément de coupe est supporté de manière pivotante de manière multiaxiale par rapport audit élément de fonction auxiliaire (20) et/ou par rapport à un cadre de tête de rasoir (24) de ladite tête de rasoir (2) autour d'une paire d'axes de pivotement (11, 12) s'étendant transversalement l'un à l'autre et transversalement à un axe longitudinal (23) dudit boîtier de rasoir (2).
     
    8. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un/chaque élément de coupe (4) est supporté de manière déplaçable par rapport audit élément de fonction auxiliaire (20) le long d'au moins un axe de déplacement (25) s'étendant transversalement audit axe d'oscillation de coupe (8).
     
    9. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ladite tête de rasoir (2) comprenant ledit au moins un élément de coupe (4) est supportée de manière pivotante par rapport audit boîtier de rasoir (2) autour d'un axe de pivotement de tête de rasoir (7).
     
    10. Rasoir électrique selon la revendication précédente en combinaison avec la revendication 7, dans lequel ledit axe de pivotement de la tête de rasoir (7) est espacé de ladite paire d'axes de pivotement (11, 12) autour duquel l'au moins un élément de coupe peut pivoter, et/ou dans lequel ladite paire d'axes de pivotement (11, 12) sont encore plus espacés de ladite tête de rasoir (3) que l'axe de pivotement de la tête de rasoir (7).
     
    11. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ladite unité d'entraînement comprend au moins un transmetteur d'entrainement allongé (9) s'étendant à partir dudit boîtier de rasoir (2) dans ladite tête de rasoir (3) et couplé audit au moins un élément de coupe (4), ledit transmetteur d'entrainement allongé (9) est couplé audit élément de coupe (4) à l'aide d'une articulation pivotante (10) pour la fourniture d'une paire d'axes de pivotement (11, 12) s'étendant perpendiculairement l'un à l'autre et transversalement à un axe longitudinal (13) dudit transmetteur d'entrainement allongé (9), dans lequel ladite articulation pivotante (10) est montée de manière déplaçable sur ledit transmetteur d'entrainement allongé (9) et/ou sur ledit élément de coupe (4) pour permettre le déplacement de ladite articulation pivotante (10) par rapport audit transmetteur d'entrainement allongé (9) et/ou audit élément de coupe (4) dans une direction transversale à l'axe d'oscillation de lames (8) et transversale audit axe longitudinal (13) dudit transmetteur d'entrainement allongé (9).
     
    12. Rasoir électrique selon l'une quelconque des revendications précédentes, dans lequel ladite unité d'entraînement comprend au moins un transmetteur d'entraînement allongé (9) s'étendant dudit boîtier de rasoir (2) dans ladite tête de rasoir (3) et couplé audit au moins un élément de coupe (4), ledit transmetteur d'entraînement allongé (9) est couplé audit élément de coupe (4) au moyen d'une articulation pivotante (10), dans lequel ladite tête de rasoir (3) et/ou ledit au moins un élément de coupe (4) est supporté de manière pivotante par rapport à ladite articulation pivotante et/ou par rapport audit transmetteur d'entrainement au moins autour d'un axe de pivotement (7) parallèle audit axe d'oscillation de lames (8).
     
    13. Rasoir électrique selon la revendication précédente, dans lequel ledit transmetteur d'entraînement allongé (9) forme une broche d'entraînement rigide et/ou est supporté pour s'étendre selon une orientation fixe et osciller uniaxialement par rapport audit boîtier de rasoir (2) le long d'un axe perpendiculaire audit axe longitudinal (13) dudit transmetteur d'entraînement allongé (9) et/ou perpendiculairement à un axe longitudinal (23) dudit boîtier de rasoir (2).
     
    14. Rasoir électrique selon l'une quelconque des revendications 1 à 12, dans lequel ledit transmetteur d'entraînement allongé (9) s'étend dans un évidement de transmetteur intérieur (16) formé dans ledit élément de coupe (4) dans lequel une partie d'extrémité dudit transmetteur d'entraînement allongé (9) est reçue de manière pivotante autour de ladite paire d'axes de pivotement (11, 12) et peut être déplacée dans ladite direction transversale audit axe d'oscillation de lames (8) et transversale audit axe longitudinal (13) dudit transmetteur d'entraînement allongé (9), dans lequel au moins l'un parmi les (iv) à () suivants est fourni :

    (iv) ledit transmetteur d'entraînement allongé (9) est en prise directe et/ou en contact direct avec les parois du corps dudit élément de coupe (4) définissant ledit évidement de transmetteur intérieur (16) formant ladite articulation pivotante (10), dans lequel ledit évidement de transmetteur intérieur (16) de l'élément de coupe (4) forme un trou de type fente, allongé ayant des parois latérales convexes définissant un intervalle dont la largeur correspond sensiblement à une épaisseur dudit transmetteur d'entraînement allongé (9) et dont la longueur est sensiblement plus grande que ladite épaisseur dudit transmetteur d'entraînement allongé (9), ladite largeur s'étendant parallèlement audit axe d'oscillation de lames (8) et ladite longueur s'étendant transversalement audit axe d'oscillation de lames (8) et transversalement à l'axe longitudinal (13) dudit transmetteur d'entraînement allongé (9) ;

    (v) dans lequel ladite articulation pivotante (10) comporte un connecteur de type bloc et/ou manchon (15) reliant une partie d'extrémité dudit transmetteur d'entrainement allongé (9) audit élément de coupe (4), dans lequel ladite partie d'extrémité dudit transmetteur d'entrainement allongé (9) est reçue dans un évidement de transmetteur (17) dans ladite pièce de connecteur (15) montée sur ledit élément de coupe (4), ledit évidement de transmetteur (17) dudit connecteur (15) formant un trou de type fente, allongé dont la largeur correspond sensiblement à une épaisseur du transmetteur d'entrainement allongé (9) et dont la longueur est sensiblement supérieure à ladite épaisseur dudit transmetteur d'entrainement allongé (9) pour permettre le déplacement dudit connecteur (15) par rapport audit transmetteur d'entrainement allongé (9) dans la direction transversale audit axe d'oscillation de lames (8) et transversale audit axe longitudinal (13) dudit transmetteur d'entrainement allongé (9) ;

    (vi) ladite articulation pivotante (10) comporte un connecteur de type bloc et/ou manchon (15) reliant une partie d'extrémité dudit transmetteur d'entrainement allongé (9) audit élément de coupe (4), ledit connecteur de type manchon (15) de l'articulation pivotante (10) formant un joint à rotule sphérique ayant une surface de support sphérique (122) pouvant pivoter en prise avec une surface de support sphérique (123) de l'élément de coupe (4), dans lequel ladite surface de support sphérique dudit connecteur (15) est munie de parties aplaties et/ou biseautées assurant un jeu du connecteur (15) par rapport à l'élément de coupe (4) et permettant le déplacement dudit connecteur (15) par rapport audit transmetteur d'entrainement allongé (9) dans la direction transversale audit axe d'oscillation de lames (8) et transversale par rapport audit axe longitudinal (13) dudit transmetteur d'entrainement allongé (9).


     
    15. Tête de rasoir (3) pour un rasoir électrique selon l'une quelconque des revendications 1 à 13, comprenant un cadre de tête de rasoir et un élément de coupe (4) mobile par rapport audit cadre de tête de rasoir et pouvant être entraîné de manière oscillante le long d'un axe d'oscillation de lames (8), ledit cadre de tête de rasoir comportant un évidement de réception pour la réception d'un élément de fonction auxiliaire non coupante (20) pour appliquer un traitement de la peau auxiliaire sur une partie de la peau destinée à être rasée avec une tête applicatrice (21) positionné à côté de l'élément de coupe (4), caractérisé en ce que ledit au moins un élément de coupe (4) est soutenu de façon pivotante par rapport audit élément de fonction auxiliaire (20) au moins autour d'un axe de pivotement (7) parallèle audit axe d'oscillation de lames (8).
     
    16. Tête de rasoir (3) pour un rasoir électrique selon l'une quelconque des revendications 1 à 13, comprenant un cadre de tête de rasoir muni d'un axe de pivotement de tête de rasoir (7) pour supporter de manière pivotante ladite tête de rasoir, et un élément de coupe (4) mobile par rapport audit cadre de tête de rasoir et pouvant être entraîné de manière oscillante le long d'un axe d'oscillation de lames (8), ledit cadre de tête de rasoir comportant un évidement de réception pour réceptionner un élément de fonction auxiliaire (20) pour l'application d'un traitement de la peau auxiliaire à une partie de la peau destinée à être rasée avec une tête applicatrice (21) positionné à côté de l'élément de coupe (4), caractérisé en ce que ledit évidement de réception est adapté pour permettre un pivotement de ladite tête de rasoir (3) autour dudit axe de pivotement de la tête de rasoir (7) par rapport audit élément de fonction auxiliaire (20) maintenu en position fixe.
     




    Drawing















































    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description