Multifunction exercice equipment with a rocking base and multiple front handlebar

Description

[0001] The present invention relates to the field of exercise equipment. More specifically, it relates to a new multifunction equipment for performing various types of gymnastic and rehabilitation exercises intended in particular for the upper part of the body.

[0002] In the field of exercise equipment, there is constantly a strong need for new solutions capable of offering trainers and athletes increasing possibilities for exercise and training. In particular, a fundamental aim is that of creating equipment by means of which a number of training programs can be performed, involving the greatest possible number of muscles and articulations, and which can be differentiated according to the degree of training or fitness of the athlete.

[0003] A known type of multifunction equipment comprises - among other things - a pedestal with a seat, possibly sliding, and a couple of posts standing on the pedestal, holding at the free ends respective disk-shaped rotors with handgrips suitable for being gripped by a user seated, or in any way accommodated, on the seat. The handgrips are attached to the relative rotor in an off-center position in relation to the axis of rotation, integral to the post. The user thus transmits rotation to the rotors via a reciprocating rhythmic movement of the arms, similar to some extent to that required for turning a crank, if necessary accompanied by, and combined with, cyclical flexion of the spine.

[0004] The document US 2004/00678301 shows similar exercice equipment.

[0005] Equipment of this kind is however unsatisfactory from the viewpoint of versatility, dynamism and capacity for adaptation to the user. The configuration of the two posts is relatively rigid, constraining the user to perform a limited number of exercises, above all following pre-established paths. In practice, the articulations are forced to follow an established trajectory, and the movement thereof is thus conditioned. The aim of the aforesaid research is therefore only partially achieved.

[0006] The fundamental object of the present invention is therefore that of providing equipment of a similar type to that briefly described above, yet considerably more effective, dynamic and versatile, in relation to the variety of exercises which can be performed and the parts of the body which can be involved.

[0007] A particular object of the present invention is that of providing equipment of the type mentioned above, which offers the possibility of adapting itself as far as possible to the physical features, needs and muscle-articular capacity of any user.

[0008] These objects are achieved by the exercise equipment according to the present invention, whose essential features are defined in the first of the annexed claims.

[0009] The features and advantages of the multifunction exercise equipment with a rocking base and multiple front handlebar according to the present invention will be made apparent from the following description of one of its embodiments, purely by way of a non-limiting example, with reference to the accompanying drawings, wherein:

• figure 1 is a schematic side view of the exercise equipment according to the invention; and
• figure 2 is a rear view from above of the exercise equipment in figure 1.

[0010] With reference to the above figures, the exercise equipment according to the present invention comprises a base 1, essentially consisting of two longitudinal arc-shaped members 1a, mutually joined by cross members 1b. Cleary, the arc shape of the longitudinal members 1a makes the base 1 rockable around an axis X parallel to the support surface, the axis X being oriented crosswise (that is to say perpendicularly to the longitudinal members 1a) and substantially in an intermediate position.

[0011] Respective feet 7 are attached, projecting outwards, to the ends of the two longitudinal members 1a, for abutting on the support surface of the equipment in order to restrict the extent of the rocking, or even to prevent it altogether. The feet 7 are screwed in holes formed in the lower part of the longitudinal members 1a, so that the stop of the rocking can be regulated appropriately simply by rotating the four feet 7 in a coordinated manner.

[0012] A central frame 2 rises up integrally from the cross members 1b, supporting an anatomically shaped saddle 3, in a rearward position with respect to the axis X, i.e. displaced towards an end of the longitudinal members, hereinafter taken as the "rear" end. More precisely, the saddle 3 has a saddle support sleeve 3a which engages telescopically in a hole provided for this purpose in the central frame 2. In this way the height of the saddle 3 can be regulated and locked in place by a screw-type tightening element, schematically represented and indicated at 4.

[0013] Two fixed handgrips 6 project laterally from the saddle 3 and can be gripped by the user for sustaining him/herself. The drawings also show two pedals 5 which, located at the front ends of respective longitudinal members 1a of the base 1, perform the function of securing to the same base the feet of a user sitting on the saddle 3. The pedals 5, with an adjustable tightening strap, can be moved along the longitudinal members 1a so as to fit the size of the user. Furthermore the pedals 5 are hinged at the base for allowing their free orientation in the most favorable manner for the specific circumstances of use.

[0014] The central frame 2 also holds a handlebar structure, generally indicated at 8, located frontally, that is to say opposite the saddle 3 with respect to the axis X, and in turn centrally in relation to the crosswise extension of the base 1. More specifically, the structure 8 comprises a fixed column 9 integral with the frame 2, and a mobile column 10 projecting frontally from the fixed column 9, beyond the outline of the base 1.

[0015] In the depicted embodiment, the mobile column 10 is pivotally connected to the fixed column 9, so that it can be rotated over a vertical plane, changing the slant in relation to the horizontal support surface. Adjustment and locking in the chosen position are carried out by means of a screw-type locking system, obvious per se, comprising an actuation knob 14 visible in the drawings. In alternative embodiments, not illustrated, the junction between the mobile column and the fixed column may also provide the possibility of rotation over the horizontal plane, and/or of translation upwards of the entire structure, all this again in an adjustable manner.

[0016] The mobile column 10 acts in turn as a support for a plurality of handlebars, including in particular at least two ball-joint handlebars 11, 12, directed upwards and downwards respectively, so that they can be gripped by the user, sitting on the saddle 3 and stretching out his/her arms forwards. In greater detail, each handlebar 11, 12 consists essentially of a rod 11a, 12a, connected at one end to the mobile column 10 via a ball-joint 11b, 12b which allows its free movement in all directions. The length of the rod 11a, 12a can be adjusted thanks to a telescopic structure with locking system, not shown.

[0017] The other end of the rod 11a, 12a is intended for gripping by the user. Various solutions can be envisaged for this purpose according to specific needs. Preferably, as in the depicted embodiment, gripping occurs via an additional bar 11c, 12c pivotally connected to the rod 11a, 12a so as to be freely rotated on a plane perpendicular to the rod itself. The additional bar 12c of the lower handlebar 12 may also comprise belt means or the like (not shown) for engagement with the feet of the user.

[0018] Again according to the preferred embodiment shown in the drawings, the mobile column 10 pivotally supports a third handlebar 13, formed simply by a rod 13a pivoting over a plane parallel to the sitting plane of the user (and thus parallel to the support surface of the equipment in the rest condition as in figure 1). The rod 13a is in fact pivotally connected, at the level of its median point, to the column 10. Respective dome-shaped knobs 13b are arranged at the ends of the rod 13a, located with their base lying on the plane of rotation of the rod itself. The knobs 13b are in turn pivotable in relation to the rod 13a around their respective zenithal axes.

[0019] The user, by gripping the handlebars 11 or 12 and driving them, according to organized and coordinated sequences, can therefore perform with his/her arms movements which are generically circular or elliptical, linearly reciprocating, zigzag, twisting, and anything else, all this with the utmost variety, freedom and dynamism. The posture of the body and therefore the involvement of the muscles and articulations will change according to the chosen handlebar. The central handlebar 13 is used for reciprocating movements of bending and stretching of the two arms, with the torso extended forwards. The fixed handgrips 6 can in turn act as a support or prop for one or both of the upper limbs, or be held by a trainer, to exercise a function of control and/or hinder of the rocking.

[0020] In all cases the user is given the possibility of performing a great variety of exercises of bending and stretching of the upper part of the body, with many directions and intensities, with the rocking base also forcing the lower part of the body to perform a balancing action so as to combine the work on the limbs with that on balance and on proprioceptive awareness. The latter can be further enhanced also by making the saddle 3 rocking in relation to the frame 2, again by means of a ball-joint.

[0021] The equipment described above is suitable for numerous additional variants and/or implementations, besides those already mentioned, in order to increase its effectiveness and versatility further. The frame 2 can for example provide means for supporting a weight, so that the same can be adjustably displaced in a longitudinal direction, modifying the overall balancing of the equipment.

[0022] A simply structured pre-setting may provide for installation on the frame 2, below the saddle 3, of a pedalboard suitable for making the equipment also usable as a stationary bicycle.

[0023] The fixed handgrips 6 can be made swingable downwards with elastic hinder. A simple water level device can be connected to the saddle 3 or the frame 2 in order to control the maintaining of a perfectly balanced position (that is to say stable without rocking). The mobile column 10, in addition to being extendable telescopically, may be provided with holes for the connection of additional side handlebars, which can be hinged on ball-joints in order to simulate a rowing motion.

[0024] The two upper and lower handlebars 11, 12 may be made sliding and lockable at the base on suitable guides, in order to vary their position along the mobile column 10. The mobile column 10 can also be hinged via a ball-joint to the fixed column 9, or the latter can be hinged, again by means of a ball-joint, with respect to the frame 2, both these solutions achieving the aim of making the entire handlebar structure 8 movable as a whole.

[0025] It is therefore clear that the equipment according to the invention, compared to similar solutions of the prior art, is advantageous due to user adaptability, the comprehensive range of exercises which can be performed and degree of dynamism of the same. The freedom of movement offered in particular by the ball-jointed handlebars overcomes the rigidity of previous equipment, wherein the movements are generally constrained to predefined paths.

[0026] The equipment according to the invention is therefore particularly suitable for exercises of rehabilitation and prevention for the whole body: if in the case of healthy articulations (with reference in particular to the arm and shoulder) the handlebars can be made to perform complete movements, articulations which have suffered injury will adapt their movement naturally to their own possibilities. The movements/exercises which can be performed with the equipment, in addition to traditional physiotherapy, will be derived more generally from, and be introductory to, disciplines such as dance, yoga, tai chi chuan and the like.

[0027] Variations and/or changes may be made to the multifunction exercise equipment with a rocking base and multiple front handlebar according to the present invention without thereby departing from the scope of the invention claimed.

Claims

1. Exercise equipment comprising a base (1), a frame (2) rising up from said base, saddle means (3) supported by said frame (2), and handlebar means (8) connected to said frame (2) and which can be gripped by a user accommodated on said saddle means (3), said base (1) having a curved shape suitable for allowing its rocking in relation to a substantially intermediate axis, characterized in that said handlebar means (8) comprise at least an upper handlebar (11) and a lower handlebar (12) comprising respective rods (11a, 12a) connected at a first end to said frame (2) via respective ball-joints (11b, 12b), so as to project the upper handlebar upwards and the lower handlebar downwards for being gripped at the other end by said user.

2. The equipment according to claim 1, wherein said upper and lower handlebars (11, 12) project from column means (9, 10) extending frontally from said frame (2) along a perpendicular direction with respect to said axis (X).

3. The equipment according to claim 2, wherein said column means comprise a fixed column (9) integral with said frame (2) and a mobile column (10) which is hinged or in any case adjustable in its slant with respect to said fixed column (9), said upper and lower handlebars (11, 12) projecting from said mobile column (10).

4. The equipment according to claim 2 or 3, wherein said upper and lower handlebars (11, 12) also comprise respective grip bars (11c, 12c) pivotally connected to the relative rods (11a, 12a) so as to be freely rotated on respective planes perpendicular to the same rods.

5. The equipment according to claim 4, wherein the grip bar (12c) of the lower handlebar (12) comprises engaging means for the feet of said user.

6. The equipment according to any of the claims 2 to 5, wherein said handlebar means (8) comprise a third central handlebar (13) comprising a rod (13a) pivotally connected, at the level of its median point, to said mobile column (10) so as to rotate over a plane parallel to the sitting plane of said user, respective dome-shaped turnable grip knobs (13b) rising up from the ends of said rod (13a).

7. The equipment according to any of the previous claims, wherein said base (1) comprises a pair of longitudinal arc-shaped members (1a), mutually joined by one or more cross members (1b) supporting said frame (2), respective pedals (5) being arranged on said longitudinal members (1a) for securing the feet of said user sitting on said saddle means (3).

8. The equipment according to claim 7, wherein said pedals (5) are slidable along said longitudinal members (1a) and hingedly supported in order to allow their arrangement according to the need of the user.

9. The equipment according to any of the previous claims, wherein said base (1) comprises stop means (7) for abutting on the support surface of the equipment in order to stop its rocking, said stop means (7) being adjustable to restrict the extent of the rocking or prevent it completely.

10. The equipment according to claim 9, wherein said stop means (7) comprises feet (7) projecting outwards and downwards from said base (1) and screwed in respective holes formed in the same.

11. The equipment according to any of the previous claims, wherein additional handgrips (6) protrude laterally from said saddle means (3) or from said frame (2).

12. The equipment according to claim 11, wherein said handgrips (6) are swingable downwards with elastic hinder.

13. The equipment according to any of the previous claims, wherein said saddle means (3) are connected to said frame (2) via a ball-joint.

14. The equipment according to any of the previous claims, wherein said frame (2) comprises means for supporting a weight element in an adjustably displaceable manner along the longitudinal direction.

15. The equipment according to any of the previous claims, wherein said frame (2) is designed for the set up, below said saddle means (3), of a pedalboard suitable for making the equipment usable also as a stationary bicycle.

16. The equipment according to any of the previous claims, wherein a water level device is connected to said saddle means (3) or said frame (2) so as to control the maintaining of a perfectly balanced position by the user.

17. The equipment according to any of the claims 3 to 16, wherein said mobile column (10) is telescopically extendable and provided with holes for the connection, via ball-joints, of additional lateral handlebars for permitting the simulation of a rowing motion by the user.

18. The equipment according to any of the claims 2 to 17, wherein said upper and lower handlebars (11, 12) are sliding and lockable in position on respective guides formed along said mobile column (10).

19. The equipment according to any of the claims 2 or 4 to 18, wherein said column means (9, 10) are hinged, internally or with respect to said frame, via a ball-joint.

Ansprüche

1. Trainingsequipment, enthaltend eine Basis (1), einen Rahmen (2), der sich von der Basis aufwärts erhebt, Satteleinrichtungen (3), die von dem Rahmen (2) getragen werden, und Handhabungsstangeneinrichtungen (8), die mit dem Rahmen (2) verbunden sind und von einem Anwender gegriffen werden können, der auf den Satteleinrichtungen (3) untergebracht ist, welche Basis (1) eine gekrümmte Form hat, um ihr Schaukeln relativ zu einer im wesentlichen zwischenliegenden Achse zu gestatten, welche Handhabungsstangeneinrichtungen (8) wenigstens eine obere Handhabungsstange (11) und eine untere Handhabungsstange (12) enthalten, die jeweilige Stäbe (11a, 12a) enthalten, die an einem ersten Ende über jeweilige Kugelgelenke (11b, 12b) mit dem Rahmen (2) verbunden sind, so dass die obere Handhabungsstange aufwärts und die untere Handhabungsstange abwärts vorstehen, um am anderen Ende von dem Anwender gegriffen zu werden.

2. Equipment nach Anspruch 1, wobei die unteren und oberen Handhabungsstangen (11, 12) von Säuleneinrichtungen (9, 10) vorstehen, die frontal von dem Rahmen (2) längs einer senkrechten Richtung bezüglich der Achse (X) verlaufen.

3. Equipment nach Anspruch 2, wobei die Säuleneinrichtungen eine fixierte Säule (9), die integral mit dem Rahmen (2) ist, und eine mobile Säule (10), enthalten, die bezüglich der fixierten Säule (9) angelenkt oder jedenfalls in ihrer Neigung einstellbar ist, welche unteren und oberen Handhabungsstangen (11, 12) von der mobilen Säule (10) vorstehen.

4. Equipment nach Anspruch 2 oder 3, wobei die oberen und unteren Handhabungsstangen (11, 12) auch jeweilige Griffstangen (11c, 12c) enthalten, die drehbar mit den jeweiligen Stäben (11a, 12a) verbunden sind, um auf jeweiligen Ebenen senkrecht zu den selbigen Stäben frei gedreht zu werden.

5. Equipment nach Anspruch 4, wobei die Griffstange (12c) der unteren Handhabungsstange (12) Eingriffseinrichtungen für die Füße des Anwenders enthalten.

6. Equipment nach einem der Ansprüche 2 bis 5, wobei die Handhabungsstangeneinrichtungen (8) eine dritte zentrale Handhabungsstange (13) enthalten, die einen Stab (13a) enthalten, der drehbar auf dem Niveau ihres Mittelpunktes mit der mobilen Säule (10) verbunden ist, um sich über eine Ebene parallel zu der Sitzebene des Anwenders zu drehen, wobei sich kuppelförmige drehbare Griffknöpfe (13b) von den Enden des Stabes (13a) aufwärts erheben.

7. Equipment nach einem der vorhergehenden Ansprüche, wobei die Basis (1) ein Paar von länglichen bogenförmigen Gliedern (1a) enthält, die wechselseitig mit einem oder mehreren Kreuzgliedern (1b) verbunden sind, die den Rahmen (2) stützen, wobei eintsprechende Pedale (5) an den länglichen Gliedern (1a) angeordnet sind, um die Füße des Anwenders zu fixieren, der auf den Satteleinrichtungen (3) sitzt.

8. Equipment nach Anspruch 7, wobei die Pedale (5) längs den länglichen Gliedern (1a) verschiebbar und gelenkig abgestützt sind, um ihre Anordnung entsprechend dem Erfordernis des Anwenders zu gestatten.

9. Equipment nach einem der vorhergehenden Ansprüche, wobei die Basis (1) Stoppeinrichtungen (7) zur Anlage an der Stützoberfläche des Equipments enthält, um sein Schaukeln zu stoppen, welche Stoppeinrichtungen (7) einstellbar sind, um das Ausmaß des Schaukelns zu beschränken oder es völlig zu verhindern.

10. Equipment nach Anspruch 9, wobei die Stoppeinrichtungen Füße (7) enthalten, die auswärts und abwärts von der Basis (1) vorstehen und in entsprechende Löcher geschraubt sind, die in der selbigen ausgebildet sind.

11. Equipment nach einem der vorhergehenden Ansprüche, wobei zusätzliche Handgriffe (6) seitlich von den Satteleinrichtungen (3) oder von dem Rahmen (2) vorstehen.

12. Equipment nach Anspruch (11), wobei die Handgriffe (6) mit einer elastischen Erschwerung abwärts schwenkbar sind.

13. Equipment nach einem der vorhergehenden Ansprüche, wobei die Satteleinrichtungen (3) mit dem Rahmen (2) über ein Kugelgelenk verbunden sind.

14. Equipment nach einem der vorhergehenden Ansprüche, wobei der Rahmen (2) Einrichtungen zum Tragen eines Gewichtselements in einer einstellbaren verstellbaren Weise längs der Längsrichtung enthält.

15. Equipment nach einem der vorhergehenden Ansprüche, wobei der Rahmen (2) gestaltet ist, um unter den Satteleinrichtungen (3) ein Pedalboard einzurichten, um das Equipment auch als ein stationäres Fahrrad nutzbar zu machen.

16. Equipment nach einem der vorhergehenden Ansprüche, wobei eine Libellenvorrichtung mit den Satteleinrichtungen (3) oder dem Rahmen (2) verbunden ist, um das Aufrechterhalten einer perfekt ausbalancierten Position durch den Anwender zu kontrollieren.

17. Equipment nach einem der Ansprüche 3 bis 16, wobei die mobile Säule (10) teleskopisch verlängerbar und mit Löchern zum Anschluss von zusätzlichen seitlichen Handhabungsstangen über Kugelgelenke versehen ist, um die Simulation einer Ruderbewegung durch den Anwender zu gestatten.

18. Equipment nach einem der Ansprüche 2 bis 17, wobei die oberen und unteren Handhabungsstangen (11, 12) an entsprechenden Führungen, die längs der mobilen Säule (10) ausgebildet sind, verschiebbar und in Position verriegelbar sind.

19. Equipment nach einem der Ansprüche 2 oder 4 bis 18, wobei die Säuleneinrichtungen (9, 10) intern oder bezüglich des Rahmens über ein Kugelgelenk angelenkt sind.

Revendications

1. Appareil d'entraînement physique comportant une embase (1), un cadre (2) s'élevant à partir de ladite embase, des moyens de selle (3) portés par ledit cadre (2), et des moyens de guidon (8) reliés au dit cadre (2) qui peuvent être saisis par un utilisateur assis sur lesdits moyens de selle (3), ladite embase (1) ayant une forme incurvée appropriée pour permettre son basculement par rapport à un axe sensiblement médian, caractérisé en ce que lesdits moyens de guidon (8) comportent au moins un guidon supérieur (11) et un guidon inférieur (12) comportant des tiges respectives (11a, 12a) reliées par une première extrémité au dit cadre (2) respectivement par l'intermédiaire de joints à rotule (11b, 12b), afin de diriger le guidon supérieur vers le haut et le guidon inférieur vers bas pour être saisis à l'autre extrémité par ledit utilisateur.

2. Appareil selon la revendication 1, dans lequel lesdits guidons supérieur et inférieur (11, 12) s'étendent à partir de moyens de colonne (9, 10) s'étendant frontalement à partir du dit cadre (2) le long d'une direction perpendiculaire par rapport au dit axe (x).

3. Appareil selon la revendication 2, dans lequel lesdits moyens de colonne comportent une colonne fixe (9) faisant partie intégrante du dit cadre (2) et une colonne mobile (10) qui est articulée ou en tout cas d'inclinaison réglable par rapport à ladite colonne fixe (9), lesdits guidons supérieur et inférieur (11, 12) s'étendant à partir de ladite colonne mobile (10).

4. Appareil selon l'une des revendications 2 et 3, dans lequel lesdits guidons supérieur et inférieur (11, 12) comportent en outre des barres de préhension respectives (11c, 12c) montées pivotantes sur lesdites tiges relatives (11a, 12a) afin de pouvoir être pivotées librement dans des plans respectifs perpendiculaires à ces mêmes tiges.

5. Appareil selon la revendication 4, dans lequel la barre de préhension (12c) du guidon inférieur (12) comporte des moyens de fixation pour les pieds du dit utilisateur.

6. Appareil selon l'une des revendications 2 à 5, dans lequel lesdits moyens de guidon (8) comportent un troisième guidon central (13) comportant une tige (13a) montée pivotante, au niveau de son point médian, sur ladite colonne mobile (10) de façon à pivoter au-dessus d'un plan parallèle au plan sur lequel est assis ledit utilisateur, des poignées d'agrippement pivotantes (13b) en forme de dôme s'élevant respectivement à partir des extrémités de ladite tige (13a).

7. Appareil selon l'une des revendications précédentes, dans lequel ladite embase (1) comporte une paire de d'éléments longitudinaux en forme d'arc (1a), reliés mutuellement par une ou plusieurs traverses (1b) supportant ledit cadre (2), des pédales respectives (5) étant agencées sur lesdits éléments longitudinaux (1a) pour caler les pieds du dit utilisateur assis sur lesdits moyens de selle (3).

8. Appareil selon la revendication 7, dans lequel lesdites pédales (5) sont coulissantes le long des dits éléments longitudinaux (1a) et montées pivotantes afin de permettre leur positionnement selon le besoin de l'utilisateur.

9. Appareil selon l'une des revendications précédentes, dans lequel ladite embase (1) comporte des moyens de butée (7) aptes à venir buter sur la surface de soutien de l'appareil afin d'arrêter son basculement, lesdits moyens de butée (7) étant réglables pour limiter l'ampleur du basculement ou l'empêcher complètement.

10. Appareil selon la revendication 9, dans lequel lesdits moyens de butée (7) comportent des pieds (7) en saillie vers l'extérieur et vers le bas à partir de ladite embase (1) et vissés dans des orifices respectifs réalisés dans cette dernière.

11. Appareil selon l'une des revendications précédentes, dans lequel des poignées additionnelles (6) s'élèvent latéralement à partir des dits moyens de selle (3) ou du dit cadre (2).

12. Appareil selon la revendication 11, dans lequel lesdites poignées (6) peuvent basculer vers le bas avec des entraves élastiques.

13. Appareil selon l'une des revendications précédentes, dans lequel lesdits moyens de selle (3) sont reliés au dit cadre (2) par l'intermédiaire d'un joint à rotule.

14. Appareil selon l'une des revendications précédentes, dans lequel ledit cadre (2) comporte des moyens pour soutenir un poids déplaçable de façon ajustable le long de la direction longitudinale.

15. Appareil selon l'une des revendications précédentes, dans lequel ledit cadre (2) est conçu pour le montage, en-dessous des dits moyens de selle (3), d'un pédalier permettant de rendre l'appareil utilisable également comme bicyclette stationnaire.

16. Appareil selon l'une des revendications précédentes, dans lequel un dispositif de niveau à eau est relié aux dits moyens de selle (3) ou au dit cadre (2) afin de contrôler le maintien de l'utilisateur dans une position de parfait équilibre.

17. Appareil selon l'une des revendications 3 à 16, dans lequel ladite colonne mobile (10) est extensible de façon télescopique et munie d'orifices pour le raccordement, via des joints à rotule, à des guidons latéraux additionnels pour permettre à l'utilisateur de simuler un mouvement de rameur.

18. Appareil selon l'une des revendications 2 à 17, dans lequel lesdits guidons supérieur et inférieur (11, 12) sont coulissants et peuvent être bloqués en position sur des guides respectifs réalisés le long de ladite colonne mobile (10).

19. Appareil selon l'une des revendications 2 ou 4 à 18, dans lequel lesdits moyens de colonne (9, 10) sont articulés, intérieurement ou par rapport au dit cadre, par l'intermédiaire d'un joint à rotule.

Drawing