Beds – Sofa bed – Reverting back
Patent
1976-11-17
1978-04-11
Nunberg, Casmir A.
Beds
Sofa bed
Reverting back
5 68, 297377, A61G 710, A47C 332
Patent
active
040830683
ABSTRACT:
An adjustable article of furniture, particularly an adjustable bed, has a frame and a backrest mounted on the frame for pivoting between a substantially horizontal rest position and an upright position. A leaf spring, or a plurality of such springs, is supported on the frame and urges the backrest toward its upright position. A section of the spring constitutes a seat support for the article of furniture, and can be deflected downwardly to a limited extent concurrently with pivoting of the backrest toward its upright position, from the generally straight configuration which the spring assumes when the backrest is in its rest position. The end of the spring which acts on the backrest is freely displaceable relative to the latter, either by being in sliding contact therewith, or by interposing anti-friction bearing means between the backrest and the respective end of the spring. An extension at the other end of the spring supports and biases a legrest toward a predetermined position of the same. A center portion of the spring is supported on the frame with freedom of limited displacement relative thereto to permit sagging of the seat in the upright position of the backrest. Extensions of the legrest and/or the backrest support the seat portion of the spring from underneath in the rest position of the backrest.
REFERENCES:
patent: 825577 (1906-07-01), Bezangu et al.
patent: 1356467 (1920-10-01), Payne
patent: 3003160 (1961-10-01), Goodman
patent: 3916461 (1975-11-01), Kerstholt
patent: 3974530 (1976-08-01), Lusch et al.
Nunberg Casmir A.
Striker Michael J.
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