(19)
(11)EP 2 251 153 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
06.12.2017 Bulletin 2017/49

(21)Application number: 10005082.2

(22)Date of filing:  14.05.2010
(51)International Patent Classification (IPC): 
B25G 1/10(2006.01)

(54)

Light weight grip and method of making same

Leichter Griff und Herstellungsverfahren dafür

Poignée légère et son procédé de fabrication


(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 SE SI SK SM TR

(30)Priority: 15.05.2009 US 454287

(43)Date of publication of application:
17.11.2010 Bulletin 2010/46

(73)Proprietor: Eaton Corporation
Cleveland, Ohio 44114-2584 (US)

(72)Inventors:
  • Gill, David, Keith
    Pinehurst, North Carolina 28374 (US)
  • Wood, Billy, Dee
    Whispering Pines North Carolina 28327 (US)

(74)Representative: Emde, Eric 
Wagner & Geyer Gewürzmühlstrasse 5
80538 München
80538 München (DE)


(56)References cited: : 
EP-A1- 1 894 681
WO-A2-2007/016617
US-A1- 2007 074 374
EP-A1- 1 923 194
US-A- 5 713 104
US-A1- 2008 313 859
  
      
    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

    BACKGROUND



    [0001] The present disclosure relates to flexible hand grips and particularly, grips of the type employed on a handle or shaft such as may be found on shock imparting implements like a hammer or sporting implements such as tennis racquets and golf clubs for example. Such hand grips are typically molded of pliable or flexible material such as rubber or elastomer and assembled onto the handle or portion of the implement to be grasped manually. Some examples are known from EP1923194A1 and US2008/313859A1. Hand grips for such implements have the need to be frictionally retained on the handle portion of the implement and yet need to provide a soft pliable and flexible gripping surface for the user's hand, particularly where the implement is to be moved in an arcuate or swinging motion which would create exertion by the user, as is the case with golf clubs, tennis racquets and tools such as hammers or shovels. This has necessitated forming the thickness of the hand grip to an amount sufficient to provide a soft resilient or pliable surface for the user's hand not only for providing adequate grip retention but to prevent discomfort which would cause blisters upon repeated usage. However, where the material thickness has been provided sufficient to yield a compliant or pliable soft flexible surface for the user's hand, this has resulted in the need for a substantial amount of material to be provided in the grip and has yielded a grip that added weight to the implement, increased the amount of material required and a resultant increase in manufacturing costs.

    [0002] Thus, it is desirable to provide a flexible pliable light weight hand grip for use on an implement which is sufficiently soft to enable the user to grip and retain a hold on the implement during forceful movement and yet provide such a grip that requires a minimum use of material and one that is relatively light in weight.

    BRIEF DESCRIPTION



    [0003] The present disclosure describes a light weight hand grip for assembly onto the handle or shaft of an implement such as, for example a hammer, shovel, golf club or tennis racquet and which has an inner tubular sleeve portion formed of flexible material for receiving the implement handle with a tubular grip portion formed of flexible material connected to the inner tubular sleeve portion by a wall for forming a butt end disposed approximately midway between the tubular sleeve portion and the tubular grip portion. The tubular grip portion is constructed to be turned inside out over the tubular sleeve portion with a core portion disposed on an outer surface of the tubular sleeve portion in an annular space created between the tubular sleeve portion and the tubular grip portion.

    [0004] In an alternate embodiment, the tubular grip portion is flexibly connected around an open end of the tubular sleeve portion and constructed to be turned inside out over the tubular sleeve portion.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0005] 

    FIGURE 1 is a cross-sectional view of an exemplary embodiment of the assembled hand grip;

    FIGURE 2 is a cross-sectional view of an exemplary embodiment of the single piece precursor grip member according to the present disclosure ;

    FIGURE 3 is a sectional view of an exemplary embodiment of the core member;

    FIGURE 4 is a block diagram of the method of the present disclosure;

    FIGURE 5 is a cross-sectional view of an alternate embodiment of the single precursor grip member according to the present disclosure;

    FIGURE 6 is a view similar to FIGURE 5 showing the foam core portion installed over the molded precursor grip member; and

    FIGURE 7 is a cross-sectional view of the formed hand grip according to an alternate embodiment of the present disclosure.


    DETAILED DESCRIPTION



    [0006] The present disclosure is directed to a hand grip particularly suited for use as a golf club grip. While the drawings and description make particular reference thereto, it should be readily understood that the hand grip may be used in a wide variety of other applications for shock imparting sport implements and tools. The hand grip according to the present disclosure is not limited only to golf club grips.

    [0007] Referring first to Figure 1, there is shown a light weight hand grip 8 made in accordance with the present disclosure. Hand grip 8 is formed from a precursor grip member 10, as best seen in Figure 2, having a tubular sleeve portion 12 and a tubular grip portion 14, and a core portion 16 sandwiched in between the two portions 12 and 14 as will be explained in much greater detail herein.

    [0008] Still referring to Figure 2, the precursor grip member 10 in first embodiment is formed as one piece from a flexible material like rubber, silicone, or an elastomer. The precursor grip member 10 includes a tubular sleeve portion 12 connected to a tubular grip portion 14 by a wall 18 situated approximately midway therebetween. The wall 18 as will be described later in greater detail herein is employed to form a butt end of the grip, and later in the subject disclosure will also be referred to as the butt end. While the wall 18 is depicted in Figure 2 as having a circular disk shaped form, it should be understood as will be seen later herein that wall can have other shapes like a fairly hemispherical shape for example. The tubular sleeve portion 12 includes inner and outer surfaces 20, 22 which define the thickness of the tubular sleeve portion 12 with an open end 24 opposite the wall 18. The open end 24 of the tubular sleeve portion 12 includes an inner diameter 32 sized to allow the tubular sleeve portion 12 to be slidably received on a shaft of an implement, for example, a golf club shaft, as seen in shadow line in Figure 1. While the thickness of the tubular sleeve portion 12 as defined by the inner and outer surfaces 20, 22 varies with an application, for illustrative purposes only one embodiment provides a thickness ranging from approximately 0.25 millimeters (mm) to approximately 1.0 mm. In other embodiments, this thickness can range upto approximately 3.0 mm, and envisionably greater than that.

    [0009] The wall 18 in this embodiment has a fairly circular shape with an outside or outer diameter 26 greater than the outside or outer diameter 28 of the tubular sleeve portion 12. Wall 18 is preferably provided with a fairly centrally located vent hole 30 used to vent solvent when attaching the finished grip to a shaft. The wall 18 can be any stylized shape, like a hexagonal or octagonal shape for example. The thickness of the wall 18 can vary with the application. In one embodiment, the wall 18 has a thickness that ranges from approximately 1.25 mm to approximately 1.6 mm.

    [0010] The tubular grip portion 14 is formed of a flexible material that may be similar or dissimilar to tubular sleeve portion 12, and is flexibly connected around a periphery 34 of the wall 18. The tubular grip portion 14 has an outside or outer diameter 36 greater than the outer diameter 28 of the tubular sleeve portion 12. The inner diameter 38 of the tubular grip portion 14 is also greater than the outer diameter 28 of the tubular sleeve portion 12 and is sized in cooperation with the diameter 26 of wall 18 to provide an annular space 40 between the inner surface 42 of the tubular grip portion 14 and the outer surface 22 of the tubular sleeve portion 12 when tubular grip portion 14 is turned inside out or folded back over the outer surface 22 of the tubular sleeve portion 12 as indicated by arrows A and B. The dashed lines in Figure 2 show the position of the tubular grip portion 14 when moved back over tubular sleeve portion 12 for forming the annular space 40. When tubular grip portion 14 is moved back or turned inside out over tubular sleeve portion 12, the wall 18 becomes the butt end 18 of the hand grip as seen in Figure 1. The ends 52 of the tubular grip portion 14 are then attached to the ends 53 or outer surface 22 of the tubular sleeve portion 12 with a vulcanized joint or other suitable manner such as integrally bonding, adhesively attaching, fusing, or even mechanically attaching the materials together. The thickness of the tubular grip portion 14 is defined by the distance between the inner and outer surfaces 42, 44. In one embodiment, the thickness ranges from approximately 0.25 mm to approximately 1 mm. It should be immediately apparent that the dimensions for the thickness of the tubular grip portion 14, tubular sleeve portion 12, and wall 18 vary with differing applications and are not intended to be limiting of the subject disclosure. Tubular grip portion 14 includes an open end 46 opposite wall 18. Tubular grip portion 14 may optionally include a tapered flange portion 48 on its outer surface 44 proximate the open end of 46. The taper of flange portion 48 is slanted downwards towards the open end 46 pointing outwards. In alternate embodiments, the flange portion 48 may be situated on the inner surface 42 proximate the open end 46 with a similar taper as previously described. In addition, the flange portion 48 may include an undercut 50 on a side of the flange portion 48 facing the wall 18. Flange portion 48 and optional undercut 50 may be used to mechanically hold the ends 52 of the tubular grip portion 14 to the tubular sleeve portion 12 until a vulcanized joint is formed.

    [0011] Referring to Figure 3, there is depicted a pre-formed core portion 16 formed of a flexible material, and in one embodiment a curable foam material with low specific gravity and high density closed cells having a slightly tapered conical shape with an aperture 54 therethrough sized to fit on the outer surface of the tubular sleeve portion and within annular space or cavity 40. In alternate embodiments of the subject disclosure, core portion 16 may be disposed on the outer surface 22 of tubular sleeve portion 12 in the desired annular space 40 by forming or molding the foam core portion 16 directly thereon. In one embodiment, core portion 16 has a specific gravity in the range of about 0.02 to about 0.05.

    [0012] For illustrative purposes only, it has been found suitable to employ ethylene-propylene-diene-monomer (EPDM) material for the core portion 16, and particularly EPDM foam material. Another suitable material includes but is not limited to a blown polyethylene foam. In the present practice, it has been found satisfactory to form the curable material with a durometer in the range of about 20-50 on the Shore 'A' scale. However, it will be understood that other suitable curable light weight materials with adequate flexibility for supporting and flexibly cushioning the tubular grip portion may also be employed.

    [0013] Next referring to Figure 5, there is depicted an alternate embodiment of a precursor hand grip member 10' which is similar to the previous embodiment described except for the following details. In this embodiment, a tubular grip portion 14' is flexibly connected about the periphery of an open end 24' of a tubular sleeve portion 12' at a flange portion 48' situated on an outer surface 22' of the tubular sleeve portion 12'. Like the embodiment depicted in Figure 2, and previously described, a core portion 16 is disposed on an outer surface 22' of tubular sleeve portion 12', and then covered when the tubular grip portion 14' is turned inside out over the core portion 16 and the tubular sleeve portion 12'. The ends 52' of the tubular grip portion 14' are then attached to a shoulder 56 at the periphery 34' of the butt end 18' to form the hand grip 18'. Figure 5 depicts the optional design indicia 58 that is molded into the inner surface 42' of the tubular grip portion 14' that is revealed when tubular grip portion 14' is turned inside out.

    [0014] Figure 6 is a view similar to Figure 5 and shows the core portion 16 installed on the outer surface 22' of the tubular sleeve portion 12'. The core portion 16 as previously described with reference to Figure 2 can be disposed as a pre-form as seen in Figure 3 and slipped over the molded tubular sleeve portion 12'. Alternatively, core portion 16 can be cast or molded on the outer surface 22' of tubular sleeve portion 12'.

    [0015] Figure 7 is a cross-sectional view of the hand grip 8' formed once the tubular grip portion 14' is turned inside out and attached at the shoulder 56 on the periphery 34' of butt end 18' with a vulcanized joint.

    [0016] Referring back to Figure 4, the method of making the hand grip 18, 18' is shown in a flow diagram. The precursor grip member 18, 18' is formed as a single or piece member of a flexible material in a design and with a shape as previously described. The precursor member 18, 18' may be formed by way of a molding technique such as injection molding or compression molding. Next, the core portion 16 is disposed on an outer surface 22, 22' of the tubular sleeve portion 12, 12'. The core portion 16 may be pre-formed and simply slid on the tubular sleeve portion as a single piece or unit with aperture 54, or alternatively the pre-formed core portion 16 may be formed in sections and placed on the outer surface 22, 22' as sectional pieces, like, two hemispherical halves or four sectional pieces. Another alternative method of disposing the core portion 16 on the outer surface 22, 22' is to cast or mold the core portion 16 thereon. Still another method of disposing the core portion 16 on the outer surface 22, 22' is to form the annular cavity 40 by attaching the ends 52, 52' of the tubular grip portion, and then inject the core portion 16 as a foam into the annular cavity 40. With this method, the last two steps in Figure 4 are reversed in order.

    [0017] The grip feel for a hand grip 8 of the subject disclosure is satisfactory when the formed grip has a durometer in the range of about 35 to about 75 on the Shore 'A' scale. It will be understood that other materials may be employed as desired for providing adequate gripping by the user and the desired flexibility and "feel" when gripped sufficiently to retain control of an implement upon which the grip is affixed during rapid or forceful movement thereof.

    [0018] It will be understood that although the hand grip illustrated herein is shown having the core portion relatively small compared to the outer diameter of the tubular grip portion, as would be the case for a golf club hand grip, that the proportions may be changed to accommodate larger size implements to be gripped such as would be the case for a hand grip for an implement such as a hammer, sledge hammer or shovel.

    [0019] The present disclosure thus describes a flexible relatively soft light weight hand grip for an implement which is light in weight by virtue of a resilient foam core portion situated between the tubular sleeve portion and tubular grip portion.

    [0020] The exemplary embodiment has been described with reference to the preferred embodiments. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the exemplary embodiment be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.


    Claims

    1. A light weight hand grip (8) comprising:

    a tubular sleeve portion (12) connected to a tubular grip portion (14);

    said tubular sleeve portion (12) being formed of a flexible material, said tubular sleeve portion (12) having an open end (46) with an inner diameter (38) constructed for receiving a shaft, said tubular sleeve portion (12) having a wall (18) disposed at one end of said tubular sleeve portion (12), said wall (18) forming a butt end on said tubular sleeve portion (12), said wall (18) of said tubular sleeve portion (12) extending beyond an outer diameter (28) of said tubular sleeve portion (12);

    said tubular grip portion (14) being formed of flexible material and being connected to said tubular sleeve portion (12) by said wall (18), said tubular grip portion (14) having an open end (46) at an opposite end from said tubular sleeve portion (12), said tubular grip portion (14) having an inner diameter (38) larger than said outer diameter (28) of said tubular sleeve portion (12), said tubular grip portion (14) being flexibly attached at one end to a periphery of said wall (18), said tubular grip portion (14) being constructed to be flexibly connected around a periphery (34) of the wall (18) and cover an outer surface (22) of said tubular sleeve portion (12); and

    a core portion (16) formed of a flexible material constructed to be disposed on said outer surface (22) of said tubular sleeve portion (12) within an annular space defined by an inner surface (42) of said tubular grip portion (14) and said outer surface (22) of said tubular sleeve portion (12), said core portion (16) is pre-formed with an aperture (54) to allow said core portion (16) to be slidably disposed on said outer surface (22) of said tubular sleeve portion (12).


     
    2. The hand grip defined in claim 1, wherein said core portion (16) is formed of a curable foam material, wherein preferably said core portion (16) is formed of ethylene-propylene-diene-monomer (EPDM) foam material.
     
    3. The hand grip defined in claim 1, wherein said tubular grip portion (14) further comprises a tapered annular flange portion on an outer surface (22) proximate the open end (46), wherein preferably said flange portion includes an undercut on an edge facing said butt end.
     
    4. The hand grip defined in claim 2, wherein said core portion (16) is formed of a material having a specific gravity in the range of about 0.02 to about 0.05, and a high density foam material.
     
    5. The hand grip defined in claim 1, wherein the hand grip formed has a durometer value in the range of about 35 to about 75 on the Shore 'A' scale.
     
    6. A method of making a lightweight hand grip, comprising the steps of:

    forming in one piece a precursor grip member having a tubular sleeve portion (12) connected to a tubular grip portion (14) by a wall (18) situated substantially midway therebetween;

    sliding a core portion (16) having an aperture (54) on an outer surface (22) of said tubular sleeve portion (12);

    moving said tubular grip portion (14) back over said wall (18) and said core portion (16) for covering said core portion (16) to form the hand grip; and

    securing ends of said tubular grip portion (14) to said tubular sleeve portion (12) for making the light weight grip.


     
    7. A method as recited in claim 6, further comprising at least one of the following steps:

    providing an annular tapered flange portion on said open end (46) of said tubular grip portion (14), and

    forming the core material from a material with low specific gravity and high density closed cell foam.


     
    8. A method as recited in claim 6, wherein said core material comprises a specific gravity in the range of about 0.02 to about 0.05.
     
    9. A method as recited in claim 6, wherein said disposing step comprises the step of molding a core material on the outer surface (22) of said tubular sleeve portion (12).
     
    10. A method as recited in claim 6, further comprising the step of molding a core material from a curable foam material in a conical form with an aperture (54) sized to be slidably positioned on said tubular sleeve portion (12).
     
    11. A light weight hand grip (8), comprising:

    a tubular grip portion (14) formed of flexible material, said tubular grip portion (14) having an inner and outer surface (22) with an open end (46) having an inner diameter (38);

    a tubular sleeve portion (12) formed of flexible material, said tubular sleeve portion (12) having an open end (46) with an inner diameter (38) and a wall (18) at a closed end with said wall (18) having an outer diameter (28), said tubular sleeve portion (12) being flexibly connected about a periphery of said tubular grip portion (14) proximate said open end (46) of said tubular grip portion (14), said tubular sleeve portion (12) having an inner surface (42) and an outer surface (22) with an outer diameter (28), said outer diameter (28) of said outer surface (22) of said tubular sleeve portion (12) being smaller than said inner diameter (38) of said tubular grip portion (14), said tubular grip portion (14) being constructed to move over said outer surface (22) of said tubular sleeve portion (12) for attachment about a periphery of said wall (18) of said tubular sleeve portion (12) for defining an annular space between an inner surface (42) of said tubular grip portion (14) and an outer surface (22) of said tubular sleeve portion (12); and

    a core portion (16) formed of a flexible material constructed to be disposed on an outer surface (22) of said tubular sleeve portion within said annular space.


     
    12. The hand grip defined in claim 11, wherein said core portion (16) is formed of a curable foam material having a specific gravity in the range of about 0.02 to about 0.05.
     
    13. A method for making a light weight hand grip (8), comprising the steps of:

    forming in a single piece a precursor grip member of flexible material, said precursor grip member having a tubular grip portion (14) flexibly attached about a periphery of said tubular grip portion (14) to an open end (46) of a tubular sleeve portion (12), said tubular sleeve portion (12) having a wall (18) situated at the other end, said wall (18) having an outer diameter (28) greater than said outer diameter (28) of said tubular sleeve portion (12), said tubular grip portion (14) having an inner diameter (38) greater than an outer diameter (28) of said tubular sleeve portion (12);

    moving said tubular grip portion (14) over said tubular sleeve portion (12) in a manner creating an annular cavity between an outer surface (22) of said tubular sleeve portion (12) and an inner surface (42) of said tubular grip portion (14); and

    disposing a core portion (16) within said annular cavity,

    said method preferably further comprising the step of securing an end of said tubular grip portion (14) to a periphery of said wall (18) at the end of said tubular sleeve member, and
    wherein preferably said step of disposing comprises the step of molding the core portion (16) within said annular cavity.
     


    Ansprüche

    1. Leichtgewichtiger Handgriff (8), der Folgendes aufweist:

    einen rohrförmigen Hülsenteil (12), der mit einem rohrförmigen Griffteil (14) verbunden ist;

    wobei der rohrförmige Hülsenteil (12) aus einem flexiblen Material geformt ist, wobei der rohrförmige Hülsenteil (12) ein offenes Ende (46) mit einem Innendurchmesser (38) hat, der ausgebildet ist, um einen Schaft aufzunehmen, wobei der rohrförmige Hülsenteil eine Wand (18) hat, die an einem Ende des rohrförmigen Hülsenteils (12) angeordnet ist, wobei die Wand (18) ein Abschlussende an dem rohrförmigen Hülsenteil (12) bildet, wobei sich die Wand (18) des rohrförmigen Hülsenteils (12) über einen Außendurchmesser (28) des rohrförmigen Hülsenteils (12) erstreckt;

    wobei der rohrförmige Griffteil (14) aus einem flexiblen Material geformt ist und mit dem rohrförmigen Hülsenteil (12) durch die Wand (18) verbunden ist, wobei der rohrförmige Griffteil (14) ein offenes Ende (46) an einem dem rohrförmigen Hülsenteil (12) gegenüberliegenden Ende hat, wobei der rohrförmige Griffteil (14) einen Innendurchmesser (38) hat, der größer ist als der Außendurchmesser (28) des rohrförmigen Hülsenteils (12), wobei der rohrförmige Griffteil (14) flexibel an einem Ende eines Umfangs der Wand (18) angebracht ist, wobei der rohrförmige Griffteil (14) so ausgebildet ist, dass er flexibel um einen Umfang (34) der Wand (18) angeschlossen ist und eine Außenfläche (22) des rohrförmigen Hülsenteils (12) abdeckt; und

    einen Kernteil (16), der aus einem flexiblen Material geformt ist, welches ausgebildet ist, um an der Außenfläche (22) des rohrförmigen Hülsenteils (12) in einem ringförmigen Raum angeordnet zu werden, der durch eine Innenfläche (42) des rohrförmigen Griffteils (14) und die Außenfläche (22) des rohrförmigen Hülsenteils (12) definiert wird, wobei der Kernteil (16) mit einer Öffnung (54) vorgeformt ist, um zu gestatten, dass der Kernteil (16) verschiebbar auf der Außenfläche (22) des rohrförmigen Hülsenteils (12) angeordnet ist.


     
    2. Handgriff nach Anspruch 1, wobei der Kernteil (16) aus einem aushärtbaren Schaummaterial geformt ist, wobei der Kernteil (16) vorzugsweise aus Ethylen-Propylen-Dien-Monomer (EPDM) Schaummaterial geformt ist.
     
    3. Handgriff nach Anspruch 1, wobei der rohrförmige Griffteil (14) weiter einen verjüngten ringförmigen Flanschteil an einer Außenfläche (22) in der Nähe des offenen Endes (46) aufweist, wobei der Flanschteil vorzugsweise einen Unterschnitt an einer Kante aufweist, die zu dem Abschlussende weist.
     
    4. Handgriff nach Anspruch 2, wobei der Kernteil (16) aus einem Material geformt ist, welches eine relative Wichte im Bereich von ungefähr 0,02 bis ungefähr 0,05 hat, und aus einem hochdichten Schaummaterial.
     
    5. Handgriff nach Anspruch 1, wobei der geformte Handgriff einen Durometer-Wert im Bereich von ungefähr 35 bis ungefähr 75 auf der Shore-A-Skala hat.
     
    6. Verfahren zum Herstellen eines leichtgewichtigen Handgriffes, welches folgende Schritte aufweist:

    Formen eines Teils eines Precursor- bzw. Vorläufergriffgliedes mit einem rohrförmigen Hülsenteil (12), der mit dem rohrförmigen Griffteil (14) durch eine Wand (18) verbunden ist, die im Wesentlichen in der Mitte dazwischen angeordnet ist;

    Schieben eines Kernteils (16) mit einer Öffnung (54) auf einer Außenfläche (22) des rohrförmigen Hülsenteils (12);

    Bewegen des rohrförmigen Griffteils (14) zurück über die Wand (18) und den Kernteil (16), um den Kernteil (16) abzudecken, um den Handgriff zu formen; und

    Befestigen der Enden des Formgriffteils (14) an dem rohrförmigen Hülsenteil (12) um den leichtgewichtigen Griff herzustellen.


     
    7. Verfahren nach Anspruch 6, welches weiter mindestens einen der folgenden Schritte aufweist:

    Vorsehen eines ringförmigen verjüngten Flanschteils an dem offenen Ende (46) des rohrförmigen Griffteils (14) und

    Formen des Kernmaterials aus einem Material mit niedriger relativer Wichte und einem hochdichten Schaum mit geschlossenen Zellen.


     
    8. Verfahren nach Anspruch 6, wobei das Kernmaterial eine relative Wichte im Bereich von ungefähr 0,02 bis ungefähr 0,05 hat.
     
    9. Verfahren nach Anspruch 6, wobei der Schritt des Anordnens den Schritt aufweist, ein Kernmaterial auf die Außenfläche (22) des rohrförmigen Hülsenteils (12) zu spritzen.
     
    10. Verfahren nach Anspruch 6, welches weiter den Schritt aufweist, ein Kernmaterial aus einem aushärtbaren Schaummaterial in eine konische Form mit einer Öffnung (54) zu spritzen, welche bemessen ist, um in verschiebbarer Weise auf dem rohrförmigen Hülsenteil (12) positioniert zu werden.
     
    11. Leichtgewichtiger Handgriff (8), der Folgendes aufweist:

    einen rohrförmigen Griffteil (14), der aus flexiblem Material geformt ist, wobei der rohrförmige Griffteil (14) eine innere und eine äußere Oberfläche (22) mit einem offnen Ende (46) hat, welches einen Innendurchmesser (38) hat;

    einen rohrförmigen Hülsenteil (12), der aus flexiblen Material geformt ist, wobei der rohrförmige Hülsenteil (12) ein offenes Ende (46) und eine Wand (18) an einem geschlossenen Ende hat, wobei die Wand (18) einen Außendurchmesser (28) hat, wobei der rohrförmige Hülsenteil (12) flexibel um einen Umfang des rohrförmigen Griffteils (14) in der Nähe des offenen Endes (46) des rohrförmigen Griffteils (14) angeschlossen ist, wobei der rohrförmige Hülsenteil (12) eine Innenfläche (42) und eine Außenfläche (22) mit einem Außendurchmesser (28) hat, wobei der Außendurchmesser (28) der Außenfläche (22) des rohrförmigen Hülsenteils (12) kleiner ist als der Innendurchmesser (38) des rohrförmigen Griffteils (14), wobei der rohrförmige Griffteil (14) ausgebildet ist, um über die Außenfläche (22) des rohrförmigen Hülsenteils (12) bewegt zu werden, und zwar zur Befestigung um einen Umfang der Wand (18) des rohrförmigen Hülsenteils (12), um einen ringförmigen Raum zwischen einer Innenfläche (42) des rohrförmigen Griffteils (14) und einer Außenfläche (22) des rohrförmigen Hülsenteils (12) zu definieren; und

    einen Kernteil (16), der aus einem flexiblen Material geformt ist, welches so ausgebildet ist, dass es an einer Außenfläche (22) des rohrförmigen Hülsenteils in einem ringförmigen Raum angeordnet wird.


     
    12. Handgriff nach Anspruch 11, wobei der Kernteil (16) aus einem aushärtbaren Schaummaterial mit einer relativen Wichte im Bereich von ungefähr 0,02 bis ungefähr 0,05 geformt ist.
     
    13. Verfahren zum Herstellen eines leichtgewichtigen Handgriffes (18), welches folgende Schritte aufweist:

    Formen eines einteiligen Precursor- bzw. Vorläufergriffgliedes aus flexiblen Material, wobei das Vorläufergriffglied einen rohrförmigen Griffteil (14) hat, der flexibel um einen Umfang des rohrförmigen Griffteils (14) an einem offenen Ende (46) eines rohrförmigen Hülsenteils (12) angebracht ist, wobei der rohrförmigen Hülsenteil (12) eine Wand (18) hat, die an dem anderen Ende gelegen ist, wobei die Wand (18) einen Außendurchmesser (28) hat, der größer ist als der Außendurchmesser (28) des rohrförmigen Hülsenteils (12), wobei der rohrförmige Griffteil (14) einen Innendurchmesser (38) hat, der größer ist als ein Außendurchmesser (28) des rohrförmigen Hülsenteils (12);

    Bewegen des rohrförmigen Griffteils (14) über den rohrförmigen Hülsenteil (12) in einer Weise, so dass ein ringförmiger Hohlraum zwischen einer Außenfläche (22) des rohrförmigen Hülsenteils (12) und einer Innenfläche (42) des rohrförmigen Griffteils (14) erzeugt wird; und

    Anordnen eines Kernteils (16) in dem ringförmigen Hohlraum,

    wobei das Verfahren vorzugsweise weiter den Schritt aufweist, ein Ende des rohrförmigen Griffteils (14) an einem Umfang der Wand (18) an dem Ende des rohrförmigen Hülsengliedes zu befestigen, und

    wobei vorzugsweise der Schritt des Anordnens den Schritt aufweist, den Kernteil (16) in den ringförmigen Hohlraum zu spritzen.


     


    Revendications

    1. Poignéelégère (8) comprenant :

    une portion de manchon tubulaire (12) connectée à une portion de poignée tubulaire (14) ;

    la portion de manchon tubulaire (12) étant formée en un matériau souple, la portion de manchon tubulaire (12) ayant une extrémité ouverte (46) avec un diamètre intérieur (38) conçu pour recevoir un manche, la portion de manchon tubulaire (12) comportant une paroi (18) disposée au niveau d'une extrémité de la portion de manchon tubulaire (12), la paroi (18) formant unembout sur la portion de manchon tubulaire (12), la paroi (18) de la portion de manchon tubulaire (12) s'étendant au-delà d'un diamètre extérieur (28) de la portion de manchon tubulaire (12) ;

    la portion de poignée tubulaire (14) étant formée en un matériau souple et étant connectée à la portion de manchon tubulaire (12) par ladite paroi (18), la portion de poignée tubulaire (14) ayant une extrémité ouverte (46) au niveau d'une extrémité opposée par rapport à la portion de manchon tubulaire (12), la portion de poignée tubulaire (14) ayant un diamètre intérieur (38) plus grand que le diamètre extérieur (28) de la portion de manchon tubulaire (12), la portion de manchon tubulaire (14) étant fixée de manière flexible au niveau d'une extrémité à une périphérie de la paroi (18), la portion de poignée tubulaire (14) étant conçue pour être connectée de façon flexible autour d'une périphérie (34) de la paroi (18) et couvrir une surface extérieure (22) de la portion de manchon tubulaire (12) ; et

    une portion d'âme (16) formée en un matériau souple, conçue pour être disposée sur la surface extérieure (22) de la portion de manchon tubulaire (12) dans un espace annulaire défini par une surface intérieure (42) de la portion de poignée tubulaire (14) et la surface extérieure (22) de la portion de manchon tubulaire (12), la portion d'âme (16) est préformée avec une ouverture (54) pour permettre à la portion d'âme (16) d'être disposée de façon coulissante sur la surface extérieure (22) de la portion de manchon tubulaire (12).


     
    2. Poignée selon la revendication 1, dans laquelle la portion d'âme (16) est formée en un matériau de mousse durcissable, dans laquelle de préférence la portion d'âme (16) est formée en un matériau de mousse éthylène-propylène-diène-monomère (EPDM).
     
    3. Poignée selon la revendication 1, dans laquelle la portion de poignée tubulaire (14) comprend en outre une portion de rebord annulaire conique sur une surface extérieure (22) à proximité de l'extrémité ouverte (46), dans laquelle de préférence la portion de rebord comprend une découpe sur un bord opposé à l'embout.
     
    4. Poignée selon la revendication 2, dans laquelle la portion d'âme (16) est formée en un matériau ayant une densité spécifique comprise entre environ 0,02 et environ 0,05 et un matériau de mousse à haute densité.
     
    5. Poignée selon la revendication 1, dans laquelle la poignée formée a une valeur de dureté mesurée comprise entre environ 35 et environ 75 sur une échelle Shore 'A'.
     
    6. Procédé de fabrication d'une poignée légère, comprenant les étapes suivantes :

    former d'une seule pièce un élément de poignée précurseur comportant une portion de manchon tubulaire (12) connectée à une portion de poignée tubulaire (14) par une paroi (18) située sensiblement à mi-chemin entre les deux ;

    faire coulisser une portion d'âme (16) comportant une ouverture (54) sur une surface extérieure (22) de la portion de manchon tubulaire (12) ;

    déplacer la portion de poignée tubulaire (14) en arrière sur la paroi (18) et la portion d'âme (16) pour couvrir la portion d'âme (16) pour former la poignée ; et

    fixerles extrémités de la portion de poignée tubulaire (14) à la portion de manchon tubulaire (12) pour réaliser la poignée légère.


     
    7. Procédé selon la revendication 6, comprenant en outre au moins l'une des étapes suivantes :

    prévoir une portion de rebord conique annulaire sur l'extrémité ouverte (46) de la portion de poignée tubulaire (14), et

    former le matériau d'âme à partir d'un matériau ayant une faible densité spécifique et une mousse à cellules fermées à haute densité.


     
    8. Procédé selon la revendication 6, dans lequel le matériau d'âme à une densité spécifique comprise entre environ 0,02 et environ 0,05.
     
    9. Procédé selon la revendication 6, dans lequel l'étape consistant à disposercomprend l'étape consistant à mouler un matériau d'âme sur la surface extérieure (22) de la portion de manchon tubulaire (12).
     
    10. Procédé selon la revendication 6, comprenant en outre l'étape consistant à mouler un matériau d'âme à partir d'un matériau de mousse durcissable avec une forme conique ayant une ouverture (54) dimensionnée pour être positionnée de façon coulissante sur la portion de manchon tubulaire (12).
     
    11. Poignéelégère (8) comprenant :

    une portion de poignée tubulaire (14) formée en un matériau souple, la portion de poignée tubulaire (14) ayant une surface intérieure et une surface extérieure (22) avec une extrémité ouverte (46) ayant un diamètre intérieur (38) ;

    une portion de manchon tubulaire (12) formée en un matériau souple, la portion de manchon tubulaire (12) ayant une extrémité ouverte (46) avec un diamètre intérieur (38) et une paroi (18) au niveau d'une extrémité fermée avec ladite paroi (18) ayant un diamètre extérieur (28), la portion de manchon tubulaire (12) étant connectée de façon flexible autour d'une périphérie de la portion de poignée tubulaire (14) à proximité de l'extrémité ouverte (46) de la portion de poignée tubulaire (14), la portion de manchon tubulaire (12) ayant une surface intérieure (42) et une surface extérieure (22) avec un diamètre extérieur (28), le diamètre extérieur (28) de la surface extérieure (22) de la portion de manchon tubulaire (12) étant inférieur au diamètre intérieur (38) de la portion de poignée tubulaire (14), la portion de poignée tubulaire (14) étant conçue pour se déplacer sur la surface extérieure (22) de la portion de manchon tubulaire (12) pour une fixation autour d'une périphérie de la paroi (18) de la portion de manchon tubulaire (12) pour définir un espace annulaire entre une surface intérieure (42) de la portion de poignée tubulaire (14) et une surface extérieure (22) de la portion de manchon tubulaire (12) ; et

    une portion d'âme (16) formée en un matériau souple, conçue pour être disposée sur une surface extérieure (22) de la portion de manchon tubulaire dans l'espace annulaire.


     
    12. Poignée selon la revendication 11, dans laquelle la portion d'âme (16) est formée en un matériau de mousse durcissable ayant une densité spécifique comprise entre environ 0,02 et environ 0,05.
     
    13. Procédé de fabrication d'une poignée légère (8) comprenant les étapes suivantes :

    former d'une seule pièce un élément de poignée précurseur en matériau souple, l'élément de poignée précurseur comportant une portion de poignée tubulaire (14) fixée de manière flexible autour d'une périphérie de la portion de poignée tubulaire (14) à une extrémité ouverte (46) d'une portion de manchon tubulaire (12), la portion de manchon tubulaire (12) comportant une paroi (18) située au niveau de l'autre extrémité, la paroi (18) ayant un diamètre extérieur (28) supérieur au diamètre extérieur (28) de la portion de manchon tubulaire (12), la portion de manchon tubulaire (14) ayant un diamètre intérieur (38) supérieur à un diamètre extérieur (28) de la portion de manchon tubulaire (12) ;

    déplacer la portion de poignée tubulaire (14) sur la portion de manchon tubulaire (12) d'une manière qui crée une cavité annulaire entre une surface extérieure (22) de la portion de manchon tubulaire (12) et une surface intérieure (42) de la portion de poignée tubulaire (14) ; et

    disposer une portion d'âme (16) dans la cavité annulaire,

    le procédé comprenant de préférence l'étape consistant à fixer une extrémité de la portion de poignée tubulaire (14) à une périphérie de la paroi (18) au niveau de l'extrémité de l'élément de manchon tubulaire, et

    dans lequel de préférence l'étape consistant à disposer comprend l'étape consistant à mouler la portion d'âme (16) dans la cavité annulaire.


     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description