Chairs and seats – Supplemental seat
Patent
1992-08-10
1994-05-17
Chen, Jose V.
Chairs and seats
Supplemental seat
297313, 297DIG10, A47C 108
Patent
active
053121570
ABSTRACT:
A lift seat includes a seating surface, for example, a toilet seat, mounted on a supporting frame by a four-bar linkage. The four-bar linkage includes a lower link fixed to the frame and an upper link fixed to the seat. An armrest is attached to a front link of the four-bar linkage for pivoting therewith against the bias of the spring which loads the four-bar linkage as the seat is lowered from a raised position to a seating position. Energy stored in the spring is then available to lift the person from the seating position back to the raised position. A damper is connected to the four-bar linkage to prevent abrupt movement of the seat as the four-bar mechanism collapses and expands, while a gas spring is provided to initially resist movement of the four-bar linkage from either the expanded or the collapsed condition unless the armrest is initially rotated.
REFERENCES:
patent: 2849728 (1958-09-01), Gyllenberg
patent: 3473174 (1969-10-01), Cool
patent: 3479087 (1969-11-01), Burke
patent: 3490082 (1970-01-01), Murcott
patent: 3787089 (1974-01-01), Wrethander
patent: 3925833 (1975-12-01), Hunter
patent: 4168552 (1979-09-01), Austin
patent: 4185335 (1980-01-01), Alvis
patent: 4506930 (1985-03-01), Lambert
patent: 4569556 (1986-02-01), Pillot
patent: 4573736 (1986-03-01), Levenberg
patent: 4581778 (1986-04-01), Pontoppidan
patent: 4587678 (1986-05-01), Love et al.
patent: 4637654 (1987-01-01), Boardman
patent: 4777671 (1988-10-01), Kearns
patent: 4833736 (1989-05-01), Sadler et al.
patent: 4884841 (1989-12-01), Holley
patent: 4907303 (1990-03-01), Baird
patent: 4929022 (1990-05-01), Geraci
patent: 5063617 (1991-11-01), Ward et al.
patent: 5631759 (1986-12-01), Strasser
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