Combined chair and bed

Claim 1

A combined chair and bed which comprises: a frame assembly comprising a pair of generally U-shaped frame structures of identical construction, a plurality of beam members extending between the frame structures to keep said frame structures in spaced relation to each other and a wheel assembly on which said frame structures are mounted for movement from place to place; a seat assembly including a back rest supported in position for pivotal movement between a generally upright position and a laid-down position, and a seat hingedly connected at one side edge to the back rest, said back rest when in the upright position forming a certain angle relative to the seat to assume a generally L-shaped configuration in cooperation with the seat, said back rest when in the laid-down position being level with the seat, said seat assembly being positioned between said frame structures; and at least one link mechanism through which the seat assembly is mounted on the frame assembly, said link mechanism including means fixed relative to the frame assembly for providing a fulcrum about which the back rest pivots accompanied by the pivotal movement of the back rest relative to the seat, the hinge axis between the back rest and the seat moving angularly about the fulcrum during the pivotal movement of the back rest about said fulcrum, thereby shifting the seat relative to the frame assembly selectively upwardly and downwardly depending upon the direction of the pivotal movement of the back rest between the upright and laid-down positions, and link means pivotally supported for movement between generally inclined and upright positions, said link means, when said seat is upwardly shifted incident to the pivotal movement of the back rest from the upright position towards the laid-down position, being erected to assume the upright position to support the seat in flush with the back rest in the laid-down position.