Ultrasonic driving device
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United States of America Patent
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-
Jul 31, 1990
Grant Date -
N/A
app pub date -
Jul 20, 1988
filing date -
Jul 26, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the present invention, a stator consists of a piezoelectric vibrator having divided electrodes on at least one end, alternating current voltage is applied to each of the divided electrodes of one end and one electrode or each of the divided electrodes of the other end of the stator, and a member to be driven is placed on the end or side portion of the stator. The member is reversibly driven by a reversible circumferential progressive wave produced on the end and side portions.
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