Wheelchair

Details Wheelchair Wheelchair

2009-08-24

2010-11-09

Winner, Tony H. (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S005220, C180S065100

Reexamination Certificate

active

07828311

ABSTRACT:
A wheelchair includes a wheelchair frame, a pair of rear wheels and a pair of front wheels carried by the wheelchair frame, a drive motor drivingly engaging at least one of the pair of rear wheels and the pair of front wheels, a pair of wheelchair tracks detachably carried by the wheelchair frame and a locomotion assist assembly carried by the wheelchair frame.

REFERENCES:
patent: 4326732 (1982-04-01), Gall et al.
patent: 4432426 (1984-02-01), Misawa
patent: 4528711 (1985-07-01), Packer
patent: 4989890 (1991-02-01), Lockard et al.
patent: 5277436 (1994-01-01), Frank et al.
patent: 5335741 (1994-08-01), Rabinovitz et al.
patent: 5457837 (1995-10-01), Zuckerbrod
patent: 5517708 (1996-05-01), Baranowski
patent: 6345950 (2002-02-01), Gerwitz
patent: 6643878 (2003-11-01), Schmaltz et al.
patent: 7311160 (2007-12-01), Lim
patent: 7374195 (2008-05-01), Varner et al.
patent: 2008/0067762 (2008-03-01), Rembos et al.

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