The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1992
Filed:
Mar. 22, 1991
Fred E Hanes, Muldrow, OK (US);
Joseph E Becker, Barling, AR (US);
Hickory Springs Manufacturing Company, Hickory, NC (US);
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 horiziontally extended position. The linkage arrangement includes a bracing link with a stud which, in the extended position, engages the rearward side of an upright support link by which the structure is mounted within the sofa bed frame, to act as a stop member against undesired accidental upward tilting of the structure when weight or force is placed against the head section. A transverse mattress support bar is affixed to a pivoting control link also operated by the bracing link for movement of the mattress support bar into a retracted position closely adjacent the intermediate section when the structure is folded and 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.