Ergonomic chair

Details Ergonomic chair Ergonomic chair

1989-04-03

1991-07-30

Cranmer, Laurie K.

Chairs and seats

Movable bottom

Movable independently of back

297353, 297349, 297410, 248561, A47C 102

Patent

active

050354663

ABSTRACT:
An ergonomic chair of simplified design includes a seat support member, a backrest support member, and a base member to which the seat support member and the backrest support member are both attached. The base member engages the seat support member in a manner that permits movement of the seat support member between a forward seated position and a rearward seated position. The base member also engages the backrest support member in a manner that permits movement of the backrest support member independent of the movement of the seat support member in a first direction toward the base member and in a second direction away from the base member. The base member also serves to tilt the base member forwardly and rearwardly about a horizontal axis.

REFERENCES:
patent: 2339953 (1944-01-01), Schlorman
patent: 2547455 (1951-04-01), Freeman
patent: 2606595 (1952-08-01), Mednick
patent: 3065828 (1962-11-01), Caldemeyer
patent: 3511533 (1970-05-01), Drabert
patent: 3910633 (1975-10-01), Marsh
patent: 4017118 (1977-04-01), Cawley
patent: 4102549 (1978-07-01), Morrison
patent: 4432582 (1984-02-01), Wiesman et al.
patent: 4555085 (1985-11-01), Bauer et al.
patent: 4664445 (1987-05-01), Groseth

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