TODAY’S PATENT – SOFA BED
The SOFA BED was invented by William L. Pringle (Grosse Pointe Shores, MI) on the 5th of July 1977 , bearing patent number US4032999A.
The present invention relates to a furniture assembly of the type utilized as a sofa bed for movement between a sitting configuration and a bed configuration. Such assemblies typically include a wooden support frame for movable supporting a fold able bed frame assembly wherein the bed frame assembly is movable from a folded position in which it defines the seating configuration to a completely unfolded position where it defines the bed configuration.
The subject invention overcomes the problems associated with the prior art assemblies by providing a simplified furniture assembly construction which may be utilized as a sofa bed. In accordance with the subject invention, the fold able bed frame assembly is supported by the support frame solely through a unique track means defined by a pair of plates having slots therein and track members secured to the plates and extending along or continuous with the slots in the plates for supporting rollers which are, in turn, supported on shafts which are connected to the fold able bed frame assembly.