Gravitational resistant positional chair

Details Gravitational resistant positional chair Gravitational resistant positional chair

1996-01-16

1997-02-18

Brown, Peter R.

Chairs and seats

Movable bottom

Tiltable

2972613, 29721619, 297318, 297322, 2973441, A47C 1023, A47C 1024, B60N 212

Patent

active

056035519

ABSTRACT:
A desk chair particularly designed to have supporting members disposed between guide members having facing complementary grooves, and the supporting members having supporting rollers riding in said grooves whereby the chair responds to movement of the body to retain it in a good posture position, the only force present in said structure being that of gravity.

REFERENCES:
patent: 2100170 (1937-11-01), Parks
patent: 2137923 (1938-11-01), Olschlager et al.
patent: 2516172 (1950-07-01), Maurer
patent: 2598384 (1952-05-01), Huber
patent: 4383714 (1983-05-01), Ishida
patent: 4640548 (1987-03-01), Desanta
patent: 4650249 (1987-03-01), Serber
patent: 4676553 (1987-06-01), Lange
patent: 4682814 (1987-07-01), Hansen
patent: 4786105 (1988-11-01), Sheehan et al.
patent: 5449218 (1995-09-01), Beavais et al.

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