Patent ID: 8640284

Claim:
An articulated bed comprising a stationary frame having first and second outer ends and extending in a plane substantially the length of the bed, first and second mattress support portions, each of said mattress support portions arranged on the frame having an inner end, said inner ends articulately connected to each other by a common shaft, the first mattress support portion being articulated by means of hinges to one end of the frame and the second mattress support portion, being articulated by means of hinge rods to the opposite end of the frame, wherein the hinge rods comprise two pivot axes and a connecting bar, the articulated bed also comprising a geared motor assembled in the frame which rotationally operates a transverse shaft provided with at least one crank coupled by means of a connecting rod with the common shaft for the articulation of the two mattress support portions, transmitting a vertical oscillation to the common shaft and to the inner ends of the mattress support portions articulately connected by said common shaft.