Rex Allen Hall

US Patent:

50384236, Aug 13, 1991

Filed:

Apr 23, 1990

Appl. No.:

7/512978

Inventors:

Rex D. Hall - White Pigeon MI

Assignee:

Shrock Manufacturing, Inc. - Elkhart IN

International Classification:

A47C 1716
A47C 1717

US Classification:

5 371

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. When the slide assembly is shifted to a fully extended position by the worm gear the hinged drive arm applies a downward force on the pivot pin to pivot the pivot plates and supports about the bolt and shift the seat-bed into its upright seat position.