Lumbar support device

Details Lumbar support device Lumbar support device

1991-11-19

1992-12-29

Chen, Jose V.

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

A47C 300

Patent

active

051746298

ABSTRACT:
A lumbar support device including a generally L-shaped arm member supported rotatably upon a seat frame and a wire member of a torsion bar type, wherein one end of the arm member is operatively coupled to a drive mechanism and another end thereof is connected to one end of the wire member, wherein another end of wire member is provided with a lumbar support plate. Both arm and wire members are moved, without being projected, so that an unpleasant hard or pressing touch is avoided in the seat.

REFERENCES:
patent: 3241879 (1966-03-01), Castello et al.
patent: 3807794 (1974-04-01), Beyer
patent: 4715653 (1987-12-01), Hattori et al.
patent: 4725095 (1988-02-01), Benson et al.
patent: 4886316 (1989-12-01), Suzuyama et al.
patent: 4896918 (1990-01-01), Hoshihara
patent: 5078449 (1992-01-01), Suzuki

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