Backrest adjusting device

Details Backrest adjusting device Backrest adjusting device

1999-06-22

2000-08-01

Barfield, Anthony D.

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

2972842, 745024, 745026, 74502, A47C 746

Patent

active

060956054

ABSTRACT:
A backrest adjusting device is disposed in a backrest pad. The backrest adjusting device has a main body, a screw rod, a block, an adjustment button, a pin, a tube, and a flexible plate. The main body has a hollow interior, a round aperture, a circular aperture, a through hole, and a sleeve. The screw rod has a threaded hole, an annular recess, and a distal portion. The block has a groove and a threaded portion. The adjustment button and the screw rod are fastened together. The tube is connected to the sleeve. The screw rod and the block are inserted in the hollow interior. The distal portion of the screw rod is inserted in the round aperture. A plug is inserted in the groove. The flexible plate has an extension pipe and an oblong hole. A wire is connected to the plug and the flexible plate.

REFERENCES:
patent: 5217278 (1993-06-01), Harrison et al.
patent: 5716098 (1998-02-01), Lance
patent: 5797652 (1998-08-01), Darbyshire
patent: 5954399 (1999-09-01), Hong

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