Adjustable lumbar support

Details Adjustable lumbar support Adjustable lumbar support

1994-08-29

1996-10-22

Nelson, Jr., Milton

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

2972841, 2974631, A47C 3025

Patent

active

055670105

ABSTRACT:
A lumbar support for a seat which has a back and a seat portion. The back of the seat contains the lumbar support and is adapted to recline with respect to the seat portion. The lumbar support includes two flexible lumbar supports, a fixed support member, a movable support member, a track for guiding the movable support member along a predetermined path of travel, and an assembly for advancing the movable support member to adjust the curvature of the flexible lumbar supports.

REFERENCES:
patent: 1580606 (1926-04-01), Jones
patent: 3241879 (1966-03-01), Castello et al.
patent: 3378299 (1968-04-01), Sandor
patent: 4316631 (1982-02-01), Lenz et al.
patent: 4350388 (1982-09-01), Weiner
patent: 4880271 (1989-11-01), Graves
patent: 4993164 (1991-02-01), Jacobsen
patent: 5050930 (1991-09-01), Schuster et al.
patent: 5197780 (1993-03-01), Coughlin
patent: 5217278 (1993-06-01), Harrison et al.
patent: 5316371 (1994-05-01), Bishai

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