Adjustable wheelbase wheelchair

A - Human Necessities – 61 – G

Patent

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Details

A61G 5/02 (2006.01) A61G 5/08 (2006.01) A61G 5/10 (2006.01)

Patent

CA 2196871

Applicant's invention is of an improved multi-wheeled vehicle having adjustable wheelbase dimensions. The preferred embodiment is a wheelchair (10) which is adjustable as to length and width "on-the-fly." Contracting the two side frames (22) effects a simultaneous retraction of the forward wheel struts (30). Thus, the length of the wheelchair (10) is reduced at the same time the width is reduced, and vice versa. The linkage between the two side frames (22) is preferably two cross members (46) in an X configuration, one end of each cross member (46) being pivotally affixed to one side frame (22) on one side of the wheelchair (10), with the respective other end of each cross member (46) being pivotally affixed to a wheel strut (30) on the opposite side of the chair (10), the two wheel struts (30) each being slidably attached to a respective side frame (22).

L'invention porte sur un véhicule à roues multiples perfectionné ayant un empattement réglable. La forme d'exécution préférée concerne un fauteuil roulant (10) qui est réglable en longueur et en largeur, de manière instantanée. La contraction des deux cadres latéraux (22) provoque un retrait simultané des barres (30) qui portent les roues avant. Ainsi, la longueur du fauteuil roulant est diminuée en même temps que sa largeur et vice versa. La liaison entre les deux cadres latéraux (22) est, de préférence, constituée de deux éléments croisés (46) formant un "X", une extrémité de chaque élément croisé (46) étant fixée en pivot sur un cadre latéral (22) sur un côté du fauteuil roulant (10), l'autre extrémité respective de chaque élément croisé (46) étant fixée en pivot à une barre (30) de roue sur le côté opposé du fauteuil (10), chacune des deux barres (30) des roues étant montée d'une manière coulissante dans un cadre latéral respectif (22).

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