Backrest with adjustable lumber support

Details Backrest with adjustable lumber support Backrest with adjustable lumber support

1987-11-27

1989-03-07

Brown, Peter R.

Chairs and seats

Bottom or back with means to alter contour

5447, 297231, 297460, A47C 746

Patent

active

048100340

ABSTRACT:
A backrest having a lumbar support cushion selectively vertically adjustably positioned thereon to accommodate the physical structure of the particular person utilizing the backrest. Support cushions having various thicknesses may also be utilized. The backrest has a plurality of vertically spaced, horizontal grooves, and the lumbar cushion has a horizontal tongue for releasable connection in the backrest grooves.

REFERENCES:
patent: 2894565 (1959-07-01), Conner
patent: 3276046 (1966-10-01), Capelli
patent: 3495871 (1970-02-01), Resag et al.
patent: 3974827 (1976-08-01), Bodeen
patent: 4362334 (1982-12-01), Ross et al.
patent: 4541670 (1985-09-01), Morgenstern et al.
patent: 4555084 (1985-11-01), Anderson
patent: 4555137 (1985-11-01), Goldner
patent: 4718724 (1988-01-01), Quinton et al.

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