Apparatus for moving a wheelchair over stepped obstacles

Details Apparatus for moving a wheelchair over stepped obstacles Apparatus for moving a wheelchair over stepped obstacles

1991-06-25

1993-07-27

Mitchell, David M.

Land vehicles

Step or abutment ascending type vehicle

Jack-type attachment

180 82, 187 9R, 2803041, 414921, B62B 502

Patent

active

052305228

ABSTRACT:
A lifting apparatus is easily attached to a conventional wheelchair and allows the wheelchair to successfully negotiate stepped obstacles, such as steps and curbs. The apparatus includes two parallel base runners that are extended from beneath the wheelchair to the ground to act as a lifting platform. A lifting subsystem then moves the wheelchair vertically and horizontally to the height of the step, and a sliding subsystem then moves the wheelchair forward onto the step. Descending a step is accomplished in a reverse sequence of operations.

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patent: 4618155 (1986-10-01), Jayne
patent: 4786107 (1988-11-01), Crockett

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