Wheelchair chassis

Details Wheelchair chassis Wheelchair chassis

1993-11-16

1996-01-02

Johnson, Brian L.

Land vehicles

Wheeled

Extensible

280657, 2802501, 297DIG4, B62B 706

Patent

active

054801796

ABSTRACT:
A collapsible wheelchair has an L-shaped monocoque chassis (2), rear driving wheels (33) and front castor wheels (18). A backrest (30) is pivoted (at 44) to the rear of the chassis, and a seat (31) is pivoted (at 46) to the front of the backrest and rests on trunnions (51) locating in slots (52) in side-plates (50). The wheelchair is collapsed by lifting the seat front to raise the trunnions out of the slots and then moving the seat and backrest forwardly and downwardly so they nest in the angle of the `L` of the chassis. The rear wheels are detachable and a footrest bracket (20) is turnable to bring the footrest (21) over the top of the stowed backrest and seat.

REFERENCES:
patent: 865541 (1907-09-01), Storm
patent: 1087928 (1914-02-01), Diemer
patent: 3442532 (1969-05-01), Gardner et al.
patent: 4280716 (1981-07-01), Vonsbaek et al.
patent: 4607860 (1986-08-01), Vogel
patent: 4639012 (1987-01-01), Jensen
patent: 4887826 (1989-12-01), Kantner
patent: 5292144 (1994-03-01), Sosnoff
patent: 5356172 (1994-10-01), Levy et al.

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