Stator and ceramic tube type ultrasonic motor using the same

Details Stator and ceramic tube type ultrasonic motor using the same Stator and ceramic tube type ultrasonic motor using the same

2007-12-25

2007-12-25

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S368000, C310S328000, C310S331000, C310S323010, C310S323040, C310S323170

Reexamination Certificate

active

11500369

ABSTRACT:
The present invention relates to a ceramic tube type ultrasonic motor having a stator including a tube-type elastic body that is formed of a ceramic material; and a plurality of piezoelectric diaphragms that are attached on the outer peripheral surface of the elastic body in a longitudinal direction thereof and to which voltages having a phase difference are respectively applied and a rotor that is rotated by the friction with the elastic body flexurally vibrating due to the voltages applied to the plurality of piezoelectric diaphragms.

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“Squeeze Bearing With Sleeve Member Having Slit”, IBM Technical Disclosure Bulletin, Dec. 1, 1984, vol. 27, Issue No. 7A, pp. 3916-3917.

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