Stand-up wheelchair with gearing down of the stand-up operation

Details Stand-up wheelchair with gearing down of the stand-up operation Stand-up wheelchair with gearing down of the stand-up operation

2008-07-15

2008-07-15

Ellis, Christopher (Department: 3618)

Land vehicles

Wheeled

Extensible

C280S643000, C280S647000, C280S650000, C280S047380, C297S330000, C297S331000, C297S334000, C297S320000, C297S321000, C297SDIG010, C297SDIG010

Reexamination Certificate

active

07398989

ABSTRACT:
A stand-up type wheelchair for handicapped and sick people comprises a chassis (2) supporting an articulated structure (12) which includes a seat, a foot-rest, a chair-back, and two symmetrical lateral articulated systems. Each system includesa first deformable polygon contributing to the support of the seat,a second deformable polygon, contributing to the support of the foot-rest,a chair-back quadrilateral (four-bar linkage) (35) articulated on the first quadrilateral, and a manoeuvring assembly (40), which includes a first lever (41), a second lever (43), and a manoeuvring handle (49).The manoeuvring handle (49) is articulated firstly on the second lever (43) and/or the first lever (41), and secondly on the first quadrilateral by means of a connecting-rod (55) whose first extremity is connected by a pivot to the first quadrilateral and whose second extremity is connected by a pivot (58) to the manoeuvring handle (49).

REFERENCES:
patent: 3640566 (1972-02-01), Hodge
patent: 4569556 (1986-02-01), Pillot
patent: 4598944 (1986-07-01), Meyer et al.
patent: 4623194 (1986-11-01), Pillot
patent: 4637652 (1987-01-01), Bergenwall
patent: 5108202 (1992-04-01), Smith
patent: 5346280 (1994-09-01), Deumite
patent: 5556121 (1996-09-01), Pillot
patent: 6192533 (2001-02-01), Porcheron
patent: 6244662 (2001-06-01), Porcheron
patent: 7077416 (2006-07-01), Duarte
patent: 2769830 (1999-04-01), None

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