Folding sofa bed frame structure with movable mattress support b

Beds – Sofa bed – Link supported unfolding

Patent

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Details

5 28, A47C 1704

Patent

active

054506379

ABSTRACT:
A folding sofa bed frame having head, intermediate and foot bed sections pivotally connected end-to-end and constrained by a linkage arrangement to move in a predetermined pattern between a folded position and a horizontally extended position. A transverse mattress support bar is affixed to a pivoting bell crank link for movement of the mattress support bar into a dropped position spaced below the intermediate section when the structure is extended, thereby out of interference with comfortable sleeping use of the bed frame.

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