Lifter

Details Lifter Lifter

2006-08-30

2009-11-03

Marcelo, Emmanuel M (Department: 3654)

Implements or apparatus for applying pushing or pulling force

Portable implements or apparatus for tensioning flexible...

Including screw drive

C254S234000, C254S241000

Reexamination Certificate

active

07611128

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.

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patent: 7275791 (2007-10-01), Sakamaki
patent: 2005/0115343 (2005-06-01), Sakamaki
patent: 2005/0116132 (2005-06-01), Sakamaki
patent: 2006/0037420 (2006-02-01), Mast et al.

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