Lumbar ridge supporting

Details Lumbar ridge supporting Lumbar ridge supporting

1982-07-26

1985-03-26

Zugel, Francis K.

Chairs and seats

Supplemental back

Including a means to adjust supplemental back relative to a...

297460, A47C 702

Patent

active

045069298

ABSTRACT:
A covered cushion about 15" wide and 13" high of injection foam material is formed convexly in the vertical plane with a central lumbar ridge about 2 3/16" wide and slightly less than an inch thick. The top of the cover carries a handle, and the back of the cover is formed with an opening for allowing admission and removal of the cushion.

REFERENCES:
patent: 1917264 (1933-07-01), Kellogg
patent: 2591306 (1952-04-01), Sherman
patent: 2769485 (1956-11-01), Shapiro
patent: 2853122 (1958-09-01), Shapiro
patent: 2970638 (1961-02-01), Halter
patent: 3765721 (1973-10-01), Watkin
patent: 4097087 (1978-06-01), Garavaglia
patent: 4339150 (1982-07-01), McNamara

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