Abstract: A motorized convertible seat-bed to electrically shift the seat-bed from between its seat position and its bed position. The seat-bed including a drive unit and a pair of mounting plates connected to a seat support and back support pivotally interconnected by a pivot pin. The drive unit including a worm gear and slide assembly having a worm gear follower wherein rotation of the worm gear causes the slide assembly to shift along a longitudinal track carried by the frame side of the seat bed. A pivoted drive arm is interconnected between the slide assembly and the pivot pin such that as the slide assembly is shifted from its fully extended position to its fully retracted position the drive arm applies an upward force on the pivot pin to pivot the plates and supports into a bed position.

Abstract: A convertible seat-bed includes a pair of plates pivotally connected to the seat support and back support of the seat-bed. An arm is pivotally connected between the pivot plates and acts as a control link.