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:
Sep. 20, 1977
Filed:
Sep. 14, 1976
Walter Clark Rogers, Jr, Denton, NC (US);
Royal Development Company, Inc., High Point, NC (US);
Abstract
A sofa bed including a seat and back pivotally connected to each other and mounted to a stationary base by means of a five-bar linkage located at opposite sides of the sofa bed. In the 'bed position,' the five-bar linkage is in an open or expanded state with the seat and back extending in coplanar relationship in horizontal plane parallel to and above the base. In the 'sofa position,' the five-bar linkage is closed or collapsed and the seat extends in a horizontal plane and the back extends in an upright inclined position. To actuate the sofa bed between said positions, the seat is grasped at a forward edge portion and slightly raised which activates a second linkage, namely a four-bar linkage, which actuates and controls the five-bar linkage while permitting it to either open or close depending upon the position of the sofa bed to be achieved. The four-bar linkage includes a link in the form of a crank pivotally connected at one end to the seat and a second link having one end pivotally connected to the opposite end of the crank and an intermediate portion pivotally connected to an intermediate portion of one of the links of the five-bar linkage which also forms one of the links of the four-bar linkage. Stop means are provided for limiting and defining both positions of the sofa bed.