Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

2011-04-12

2011-04-12

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323020, C310S323170, C310S366000

Reexamination Certificate

active

07923900

ABSTRACT:
An ultrasonic motor, which drives a driven member using an elliptical vibration produced by synthesizing a longitudinal vibrational mode and a flexural vibrational mode as a drive force, is configured as follows. Namely, the ultrasonic motor includes a piezoelectric device, and a feed member feeding the piezoelectric device. An extensional axis of the feed member is set to an axis different from main vibrational axes of the longitudinal vibrational mode and the flexural vibrational mode.

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International Search Report dated Aug. 12, 2008.

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