Foldable mattress support with supplemental back spring

Details Foldable mattress support with supplemental back spring Foldable mattress support with supplemental back spring

1987-04-23

1988-07-05

Grosz, Alexander

Beds

Sofa bed

Link supported unfolding

5226, A47C 1704, A47C 1900

Patent

active

047545054

ABSTRACT:
A mattress is supported on a flexible deck which is surrounded by and connected to a foldable frame. A back section of the frame is movable between a horizontal sleeping position and a vertical seating position.
A supplemental back spring is attached to the frame and has a flex wire section and a collapsible section. The flex wire section provides horizontal support to the mattress in the seating position, and the collapsible section of the spring resists hammocking or sagging of the deck when the mattress is in the sleeping position.

REFERENCES:
patent: 2545513 (1951-03-01), Emberson
patent: 2727250 (1955-12-01), Fox
patent: 2742653 (1956-04-01), Woller
patent: 2847684 (1958-08-01), Pompon
patent: 4494258 (1985-01-01), Blevins et al.

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