Patent Number: 7,611,128

Title: Lifter

Abstract: A lifter is disclosed using two transmission mechanisms at two sides of a housing for lifting, for example, a bed or chair, each transmission mechanism including a motor. a worm gear wheel meshed with a worm shaft as the output of the motor, a screw rod threaded into an inner thread in the hollow gear shaft of the worm gear wheel, a push block fixedly fastened to one end of the screw rod and moved with the screw rod to lift/lower the load upon rotation of the motor, and a sliding block fixedly fastened to the other end of the screw rod to guide axial displacement of the screw rod in the housing.

Inventors: Wu; Jung-Jen (Taipei, TW)

Assignee: Moteck Electric Corp.

International Classification: B21F 9/00 (20060101)

Expiration Date: 1/03/02017