Appeal No. 1997-0367
Application No. 08/321,581
This is a decision on appeal from the final rejection of
claims 4-6 and 16-30, all of the claims pending in the present
application. Claims 1-3 and 7-15 have been canceled.
The disclosed invention relates to an ultrasonic motor
having a vibrating member which is piezoelectrically vibrated
for driving and halting a movable member. An ultrasonic
vibration generating circuit is included for generating first
and second waves for respectively driving and halting the
movable member.
Claim 4 is illustrative of the invention and reads as
follows:
4. An ultrasonic motor having a movable member frictionally
driven by ultrasonic vibration using elastic movement of a
piezoelectric vibrator, the ultrasonic motor comprising:
an ultrasonic vibration generating circuit for generating
a first standing wave for driving a movable member and a
second standing wave for halting the movable member;
a switching circuit for changing operation of the first
standing wave for driving the movable member and the second
standing wave for halting the movable member;
at least one piezoelectric vibrator step-driven by the
ultrasonic vibration generating circuit, the piezoelectric
vibrator having electrode patterns for receiving the output
signal of the switching circuit, each two adjacent electrode
patterns being separated by a boundary;
2
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