Portable folding orthopedic chair

Details Portable folding orthopedic chair Portable folding orthopedic chair

1977-12-15

1979-07-17

Zugel, Francis K.

Chairs and seats

Supplemental back

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

297284, 297460, A47C 740

Patent

active

041613376

ABSTRACT:
A portable folding orthopedic seat unit for use on a chair, automobile seat, or the like. A semirigid seat member is hinged to a back member. Vertical rigid support means extends from the bottom to the top of the back member and supports a back-support assembly, comprising two separate, generally elliptically-shaped, padded back-support members, spaced apart from each other, and a substantially vertically rigid and laterally flexing connecting member joining them together. The connecting member serves to transfer forces from one back-support member to the other. Releasable locking means holds the assembly at a selected vertical position on the rigid support means.

REFERENCES:
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patent: 1011026 (1911-12-01), Carpenter
patent: 1228771 (1917-06-01), Hanger
patent: 2304349 (1942-12-01), Fox
patent: 2858876 (1958-11-01), Woodson
patent: 2942651 (1960-06-01), Binding
patent: 3014761 (1961-12-01), Otto
patent: 3295888 (1967-01-01), Poland
patent: 3326602 (1967-06-01), Moore et al.
patent: 4036525 (1977-07-01), Howk
patent: 4047757 (1977-09-01), Eames et al.

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