Lumbar support apparatus for vehicular seat

Details Lumbar support apparatus for vehicular seat Lumbar support apparatus for vehicular seat

1992-08-18

1994-05-24

Dorner, Kenneth J.

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

2972844, A47C 300

Patent

active

053142365

ABSTRACT:
A lumbar support apparatus installed in a seat back of a vehicular seat has a panel which is movable in front-and-aft direction. A U-shaped spring member is connected at its bent middle portion to the panel and pivotably supported at its opposite ends to a bracket fixed to a seat back frame. A control mechanism for moving the panel in the front-and-aft direction is disposed between the spring member and a pipe frame of the seat back frame. The control mechanism is fixedly in contact with the pipe frame through a stopper member so as to transmit the force from the spring member to the seat back frame in the front-and-aft direction.

REFERENCES:
patent: 3807794 (1974-04-01), Beyer
patent: 3890000 (1975-06-01), Easley
patent: 4531779 (1985-07-01), Hashimoto
patent: 4714291 (1987-12-01), Hattori et al.
patent: 4896918 (1990-01-01), Hoshihara
patent: 5011223 (1991-04-01), Kato
patent: 5078449 (1992-01-01), Suzuki
patent: 5215350 (1993-06-01), Kato

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