Adjustable waist support device for chairs

Details Adjustable waist support device for chairs Adjustable waist support device for chairs

1999-04-14

2000-05-09

Barfield, Anthony D.

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

2972847, 2972844, A47C 742

Patent

active

060593628

ABSTRACT:
An adjustable waist support device that includes a waist support seat, a waist support fixed to the waist support seat, and an attachment device for mounting the waist support seat to a backrest of the chair. The waist support seat includes a longitudinal slot in a mediate portion thereof. The attachment device includes a plate, at least two washers, at least two elastic members, at least two screws, and at least two nuts. Each washer includes a reduced section so as to be slidingly extended through the longitudinal slot. Each elastic member is mounted to an associated washer. Each screw is extended through an associated elastic member, an associated washer, the longitudinal slot, a backboard of the backrest, and the plate in sequence and then secured in place by an associated nut.

REFERENCES:
patent: 3463544 (1969-08-01), Froelich
patent: 4018166 (1977-04-01), Gutridge et al.
patent: 4632454 (1986-12-01), Naert
patent: 4676550 (1987-06-01), Neve De Mevergnies
patent: 4730871 (1988-03-01), Sheldon
patent: 5791733 (1998-08-01), Van Hekken et al.
patent: 5871258 (1999-02-01), Battey et al.

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