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