Ultrasonic lead screw motor

Details Ultrasonic lead screw motor Ultrasonic lead screw motor

2005-09-06

2005-09-06

Dougherty, Tom (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

06940209

ABSTRACT:
An apparatus for driving a threaded shaft assembly that contains a threaded shaft with an axis of rotation and, engaged therewith, a threaded nut. Subjecting the threaded nut to ultrasonic vibrations causes the threaded shaft to simultaneously rotate and translate in the axial direction. The threaded shaft is connected to a load that applies an axial force to the threaded shaft.

REFERENCES:
patent: 3902084 (1975-08-01), May, Jr.
patent: 5144187 (1992-09-01), Culp
patent: 5237236 (1993-08-01), Culp
patent: 5387835 (1995-02-01), Tsukimoto et al.
patent: 5410206 (1995-04-01), Luecke et al.
patent: 5453653 (1995-09-01), Zumeris
patent: 6147435 (2000-11-01), Fujimura
patent: 6366004 (2002-04-01), Yano et al.

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