US 4,937,900 AGranted

Electric sofa bed

OwnerBobby L. Bridgesinventor

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Abstract

A base frame is provided as well as a forward seat support, a rear seat back support and a kick panel support. First linkage structure is connected between the base frame and the seat back support for guided movement thereof between a raised generally upright position and a lowered generally horizontal position, second linkage structure is connected between the base frame and the seat support for guided movement thereof between a first generally horizontal position and a second slightly rearwardly and downwardly inclined position and third likage structure is operatively connected between the base frame and the kick panel support for movement thereof between a lowered upstanding position disposed foward of the main frame and a raised horizontal position. In addition, first connecting structures connected between the first and second linkage structure and second connecting structure is connected between the second and third linkage structure in a manner such that the rear seat back support, seat support and kick panel support all are disposed in their horizontal positions at one set of limit positions thereof and are disposed in their upright, slightly rearwardly and downwardly inclined and upstanding positions, respectively, thereof in the other set of limit positions of movement thereof, there being provided reversable electric motor driven screw jack assembly structure operatively connected between the main frame and one of the connecting links for simultaneous movement of the sections between the limit positions of movement thereof.

Claims13

Dependent claims

A convertable seat bed assembly including a base frame having front and rear sides, a forward seat support and a rear seat back support disposed rearward of said forward seat support, first linkage means connected between said base frame and said seat back support for guided movement of said seat back support between a raised seat back support defining position with said seat back support in a raised generally upright position extending upwardly from the rear side of said base frame and a lowered generally horizontal position projecting rearwardly of said base frame, second linkage means connected between said base frame and said forward seat support for guided movement of said forward seat support between a first generally horizontally position disposed closely forward of said rear seat back support when the latter is in the lowered position thereof and a second slightly rearwardly and downwardly inclined position with the rear extremity of said forward seat support lowered relative to the horizontal position of said forward seat support, force means operably connected between said base frame and said first linkage means for shifting said seat back support between the raised and lowered positions thereof, biasing means operatively connected between said base frame and said forward seat support yieldingly biasing said forward seat support toward said second position, and connecting means connected between said first and second linkage means and operatively associated with said base frame for shifting said forward seat support from said second position thereof to the first position thereof responsive to final movement of said seat back support from said raised position to said lowered position.

Dependencies are inferred from the claim text.