Travel-lift chair

Details Travel-lift chair Travel-lift chair

1991-08-06

1992-11-10

Marmor, Charles A.

Land vehicles

Wheeled

Stable vehicles, handle-propelled

280657, 297347, B62B 704

Patent

active

051618125

ABSTRACT:
The invention is an improved wheel chair in which the seat may be raised or lowered by a hand powered hydraulic ram mechanical means to levels that match the surface of the chair or bed to which the patient is being transferred. A commode function is also provided. The chair comprises a base having swivel casters and fixed wheels, an upper unit having a seat and backrest and a hydraulic pump, and a seat raising mechanism consisting of four pairs of interconnected levers connected by two cross bars in such a way that when the bars are pushed apart by a hydraulic ram, the separating motion is amplified to give the desired range of chair seat travel height.

REFERENCES:
patent: 290841 (1883-12-01), Bohsert
patent: 2041615 (1936-05-01), Maslowski
patent: 2982336 (1961-05-01), Minici
patent: 3123400 (1964-03-01), Paulson
patent: 3882949 (1975-05-01), Anderson
patent: 4232901 (1980-11-01), Harrington et al.
patent: 4527829 (1985-07-01), Fanslau et al.
patent: 4613151 (1986-09-01), Kielczewski
patent: 4886288 (1989-12-01), Dysarz
patent: 4934723 (1990-06-01), Dysarz
patent: 5039165 (1991-08-01), Rothman et al.

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