Power operated reclining wheelchair

Details Power operated reclining wheelchair Power operated reclining wheelchair

1979-11-16

1982-06-08

McCall, James T.

Chairs and seats

Legrest or footrest interconnected to move relative to...

With means to move bottom relative to and concurrently with...

297DIG4, 297330, A47C 1034

Patent

active

043336817

ABSTRACT:
A power operated reclining wheelchair having a frame assembly with a base frame and a pair of laterally spaced sidewall frames extending upwardly from the opposite lateral sides of the base frame. Each of the sidewall frames have a fixed major pivot point located adjacent its rear end at a location approximating that of the hip joint of the occupant of the wheelchair. The wheelchair also has a back rest assembly and a seat assembly and mechanical and electrical structure for pivotally reclining the back rest assembly about the major pivot points in coordinated movement with the seat assembly during which the front end of the seat assembly is tilted upwardly and forwardly advanced from its initial position while its rear end is slightly lowered and forwardly advanced from its initial position. Continued movement of the seat assembly brings it to a final position where the front end and the rear end of the seat assembly are substantially horizontal and at substantially the same vertical height that they were at the initial position, but with the seat assembly positioned forwardly of its initial starting position. A footrest assembly is also pivotally connected to the front of the seat assembly and mechanical structure coordinates its movement with that of the back rest assembly and the seat assembly.

REFERENCES:
patent: 2660225 (1953-11-01), Luckhardt
patent: 2976868 (1961-03-01), Weissenberg
patent: 3111181 (1963-11-01), Yatich
patent: 3191990 (1965-06-01), Rugg et al.
patent: 3657747 (1972-04-01), Rogers, Jr. et al.
patent: 3934929 (1976-01-01), Rabinowitz
patent: 3936893 (1976-02-01), Anderson
patent: 4000529 (1977-01-01), De Maria
patent: 4183578 (1980-01-01), Naganawa
patent: 4285541 (1981-08-01), Ohishi

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