Ultrasonic driving device
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United States of America Patent
Stats
-
Jan 16, 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, an electrode in both end portions of a piezoelectric vibrator is respectively divided in two, alternative current voltage is supplied to each of electrodes of the both end portions, whereby reversible circumferential progressive wave arises on the both end portions or side portion of a state consisting of the piezoelectric vibrator. A member to be driven is composed on each of the both end portions or the side portion of the stator.
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