Ultrasonic motor and electronic device using the same

Details Ultrasonic motor and electronic device using the same Ultrasonic motor and electronic device using the same

2011-08-02

2011-08-02

Bernson, Walter (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S020000, C310S021000, C074S020000

Reexamination Certificate

active

07990020

ABSTRACT:
The present invention provides an ultrasonic motor including a wire having a coiled stator at one end thereof, a vibration generating device disposed at another end of the wire, a moving member that is in contact with the stator, a guide member that guides the rotation of the moving member, and an elastic member that covers the periphery of the wire. Accordingly, the driving efficiency of the ultrasonic motor that has a simple structure and that can be easily downsized can be enhanced and the performance stability thereof can be realized.

REFERENCES:
patent: 4623853 (1986-11-01), Watanabe et al.
patent: 5020539 (1991-06-01), Yokoi et al.
patent: 6570296 (2003-05-01), Iino et al.
patent: 2005/0017159 (2005-01-01), Hasegawa et al.
patent: 2008/0001500 (2008-01-01), Moriya et al.
patent: 2008/0024019 (2008-01-01), Sakuma et al.
patent: 1768245 (2007-03-01), None
patent: 2006047907 (2006-02-01), None
patent: 2005114824 (2005-12-01), None

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