Ergonomic chair

Details Ergonomic chair Ergonomic chair

1990-07-16

1991-09-17

Aschenbrenner, Peter A.

Chairs and seats

Movable bottom

Tiltable

297313, A47C 750

Patent

active

050488937

ABSTRACT:
A chair adapted to passively adjust itself to be in equilibrium with the user's body in relation to changes in the center of gravity and thigh inclination. The chair includes a post from which is provided, in one embodiment, a convex track on which a carriage is allowed to travel, and a seat pan is pivoted on the carriage for angle adjustment relative to the carriage. In another embodiment, a first concave track is provided on the top of the post with a carriage slidable in the concave track and a seat pan mounted for travel in a track on the carriage wherein the second concave track has a smaller radius than the first track.

REFERENCES:
patent: 160624 (1875-03-01), Spencer
patent: 2153763 (1939-04-01), Kuhler
patent: 2210863 (1940-08-01), Whedon
patent: 2217756 (1940-10-01), Lichter
patent: 3135550 (1964-06-01), Bosack

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