Power-supplemented manual height-adjusting wheelchair

Details Power-supplemented manual height-adjusting wheelchair Power-supplemented manual height-adjusting wheelchair

2011-08-02

2011-08-02

Silbermann, Joanne (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S304100

Reexamination Certificate

active

07988172

ABSTRACT:
A wheelchair having a lower frame with drive wheels and forwardly extending arms with casters and an upper frame with a seat and backrest. Linkage assemblies on opposing sides pivotably attach at a first end to the lower frame and at a second end to the upper frame. Power cylinders attached on opposing sides are extendable between the upper frame and the lower frame and are lockable from moving from a selected position. When unlocked, the power cylinders apply a supplemental force in association with a force applied by a user on the drive wheels for moving the upper frame relative to the lower frame guided by the linkage assembly. A method of adjusting the seat height of a wheelchair is disclosed.

REFERENCES:
patent: 4500102 (1985-02-01), Haury et al.
patent: 5301964 (1994-04-01), Papac
patent: 5622406 (1997-04-01), Meschkat et al.
patent: 5669620 (1997-09-01), Robbins
patent: 5884928 (1999-03-01), Papac
patent: 6250717 (2001-06-01), Porcheron
patent: 7845665 (2010-12-01), Borisoff
patent: 2003/0116927 (2003-06-01), Quigg
patent: 2003/0184042 (2003-10-01), Patrick et al.
patent: 2004/0183276 (2004-09-01), Silva

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