Land vehicles – Wheeled – Extensible
Patent
1995-10-12
1996-10-01
Camby, Richard M.
Land vehicles
Wheeled
Extensible
280650, 280658, B62B 708
Patent
active
055606369
ABSTRACT:
A wheelchair includes a pair of posts and a base having a middle portion pivotally coupled to the posts so as to allow the base to rotate from a horizontal position to an erecting position. A rod is engaged in the middle of the wheelchair for engaging with the base so as to maintain the base in the horizontal position. A lower frame has an upper portion pivotally coupled to the front end of the base for moving the front end of the base downward so as to erecting the base when the rod is disengaged from the base. The wheelchair may be folded to a compact structure for carrying purposes.
REFERENCES:
patent: 4606550 (1986-08-01), Cone
patent: 4632421 (1986-12-01), Shamie
patent: 5106116 (1992-04-01), Chen
patent: 5478102 (1995-12-01), Haung
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