Ultrasonic motor having lightweight vibrating element

Details Ultrasonic motor having lightweight vibrating element Ultrasonic motor having lightweight vibrating element

2008-12-30

2010-06-08

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323040

Reexamination Certificate

active

07732981

ABSTRACT:
An ultrasonic motor includes a vibrating element having a piezoelectric body attached thereto to produce a traveling wave when the piezoelectric body is supplied with an electric power, and a contacting element to come in friction contact with the vibrating element when the vibrating element is vibrated by the traveling wave. The vibrating element is formed of a Mg-based alloy having a Mg content of more than 85% by weight.

REFERENCES:
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patent: 03222679 (1991-10-01), None
patent: 07123747 (1995-05-01), None
patent: 2002010657 (2002-01-01), None
patent: 2005-218191 (2005-08-01), None

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