Patent ID: 7530125
Filing Date: 2009-05-12
Classification: A47C,A61G

Abstract:
1. An adjustable bed comprising: a stationary base having a pair of opposed side rails, each of said side rails including a channel; a frame movable relative to said stationary base, said frame including a pair of side assemblies; rollers rotatably mounted to said side assemblies of said frame and being rotatable in said channels of said side rails of said base; a seat deck board secured to said movable frame; a head deck board hingedly secured to said head deck board; a leg deck board hingedly secured to said seat deck board; a foot deck board hingedly secured to said leg deck board; a pair of head links of a fixed length, each of said head links being pivotally secured to one of said side rails of said base at one end and being pivotally secured to rackets secured to said head deck board at the other end; a pair of foot links of a fixed length, each of said foot links being pivotally secured to said movable frame at one end and being pivotally secured to brackets secured to said foot deck boards at the other end; a pair of leg links of a fixed length, each of said leg links being pivotally secured to one of said side rails of said base at one end and being pivotally secured to brackets secured to said leg deck board at the other end; an actuator secured to said frame, said actuator including a cylinder and a piston movable relative to said cylinder, said piston being operatively coupled to a pair of link arms operatively coupled to a torque tube, said torque tube being operatively coupled to a pair of operating arms having rollers at the ends therefor for engaging said head deck board to raise the head board.