Convertible sofa

Details Convertible sofa Convertible sofa

1975-04-18

1976-06-29

Nunberg, Casmir A.

Beds

Sofa bed

Link supported unfolding

5 18R, 5 29, A47C 1714

Patent

active

039654990

ABSTRACT:
The bed or mattress frame for a convertible sofa is formed of at least two flat spring sections hinged along adjacent longitudinal edges and foldable into a storage position with the spring sections arranged in flat, overlying relationship with each other behind the front board of the sofa. As the sections are unfolded, a linking bar at each end of the frame activates a pivotally attached lever to lift the spring sections to a level above the front board.

REFERENCES:
patent: 2584145 (1952-02-01), Martin
patent: 2783479 (1957-03-01), Bartolucci
patent: 3771178 (1973-11-01), Inman

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