초록 ▼

A lightweight, optionally foldable wheelchair which allows the user maximum control over both travel direction and seat position. The wheelchair is driven manually by an arrangement of drive gears, which are actuated by a drive gear selector and operated by rotating a pair of opposed handwheels, one

A lightweight, optionally foldable wheelchair which allows the user maximum control over both travel direction and seat position. The wheelchair is driven manually by an arrangement of drive gears, which are actuated by a drive gear selector and operated by rotating a pair of opposed handwheels, one of which is contacted by each of the occupant\s hands. One of four or more different gears may be selected, including a “Forward Only”and a “Reverse Only”gear, which allow travel only in the direction selected. A dual function shift lever supports the drive gear selector and may be activated to disengage the drive gears and engage a seat positioning gear. When the seat positioning gear is engaged, rotation of the handwheels by the wheelchair occupant will activate a seat raising mechanism which moves the seat from a horizontal sitting position to a substantially vertical position toward the rear of the wheelchair. The leg rests and foot rests fold and are engaged by the wheelchair frame so that they are guided away from the front of the chair, thus enabling the occupant to assume a standing position without changing the center of gravity of the chair.

대표청구항 ▼

A lightweight, foldable manually driven wheelchair including: (a) travel wheel means for propelling the wheelchair along a desired travel path; (b) manually activated drive gear means for controlling the direction of travel along the travel path; (c) manually actuated body positioning means for movi

A lightweight, foldable manually driven wheelchair including: (a) travel wheel means for propelling the wheelchair along a desired travel path; (b) manually activated drive gear means for controlling the direction of travel along the travel path; (c) manually actuated body positioning means for moving the position of the wheelchair occupant between sitting and standing positions without changing the center of gravity of the wheelchair; (d) shift control means shiftable between a first position in which said drive gear means can be activated and a second position in which said body positioning means can be actuated for allowing the wheelchair occupant to control selectively the direction of travel or body position of the wheelchair; (e) dual function handwheel means for operation by the wheelchair occupant to drive said drive gear means when said drive gear means is activated and to move said body positioning means when said body positioning means is actuated; and (f) foldable frame means for supporting said travel wheel means, said drive gear means, said body positioning means, said shift control means and said handwheel means in operational relationship.