Chairs and seats – Movable bottom – Tiltable
Patent
1983-08-05
1986-05-06
McCall, James T.
Chairs and seats
Movable bottom
Tiltable
297 71, 297 90, A47C 102
Patent
active
045867496
ABSTRACT:
A pair of link plates, each pivotally connected at one end to a seat base and each pivotally connected at their other ends to a seat plate and seat supported thereby, constrain the seat plate and seat to a rearward and upward movement, or a downward and forward movement, with respect to the seat base. The plunger, of a hydraulic cylinder pivotally carried by the seat base, is pivotally connected to the seat plate so that when actuated it induces movement of the seat plate to its rearward and upward position. A seat back is pivotally connected to the seat base and to armrests carried by the seat plate so that movement of the seat in the upward and rearward direction moves the seat back to a downward position aligned with the seat. A footrest linkage is connected between the seat back and a footrest connected to the seat so that movement of the seat back into its downward position moves the footrest into an upward position aligned with the seat and seat back.
REFERENCES:
patent: 2714922 (1955-08-01), McKibbon
patent: 2890743 (1959-06-01), Schliephacke
patent: 3596982 (1971-08-01), Grams
patent: 3765720 (1973-10-01), Sakai
patent: 3792905 (1974-02-01), Johnson
Feldman Stephen E.
McCall James T.
Takara Company, New York, Inc.
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