Beds – Sofa bed – Reverting back
Patent
1993-09-16
1995-02-14
Trettel, Michael F.
Beds
Sofa bed
Reverting back
5 811, 5 831, 2802501, 2803041, A61G 710
Patent
active
053882890
ABSTRACT:
A knockdown, portable combination wheelchair and lift which is readily assembled and disassembled, thereby enabling convenient stowage and transport when not in use. The invention breaks down into a base, a chair, a footrest for the chair, and a boom having a sling. The base is U-shaped, having front casters and rear wheels. A mast projects vertically from the base, and can be folded down, parallel with the legs of the U, during disassembly. The chair mounts on the mast, and folds for compact stowage. A boom having winch, chain, and sling is supported by telescoping fit into the mast, and can raise and lower a passenger seated on the sling. This enables the chair portion to be removed, the lift now being able to penetrate a motor vehicle, and deposit the passenger therein. Both the boom and the chair are removable from the remaining components, so that the invention is selectively configured alternatively as a wheelchair or a lift. The major components interfit, as by peg and hole construction, and fasteners are manual, so that the invention is assembled and disassembled entirely by hand. The four major components are sufficiently flat to fit, when disassembled, in the trunk of most automobiles. The wheelchair includes fenders for guiding the same past obstructions, such as a flange or lip formed on stairs, when the wheelchair is pulled up a flight of stairs.
REFERENCES:
patent: 3877421 (1975-04-01), Brown
patent: 3981484 (1976-09-01), James
patent: 4010499 (1977-03-01), Davis et al.
patent: 4144713 (1979-03-01), Clark et al.
patent: 4193147 (1980-03-01), Fischer
patent: 4432359 (1984-09-01), James
patent: 4999862 (1991-03-01), Hefty
patent: 5153953 (1992-10-01), Sumrall
patent: 5165123 (1992-11-01), Colpron
patent: 5188383 (1993-02-01), Thompson
patent: 5333333 (1994-08-01), Mah
Manufacturer's Promotional Literature: Invacare Corp, Elyria, Ohio, 2 pp. Featuring 9800 Series Products, 1989.
Manufacturer's Promotional Literature: Century, 1 p. Featuring Model C3 (undated).
Litman Richard C.
Trettel Michael F.
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