Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

2008-07-03

2009-12-15

Dougherty, Thomas M (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323010, C310S328000

Reexamination Certificate

active

07633207

ABSTRACT:
An ultrasonic motor comprises an ultrasonic vibrator having a piezoelectric stack, a press member which is securely connected in the vicinity of a node of a standing wave in the ultrasonic vibrator and which presses the ultrasonic vibrator, a driven member which is driven by frictional force between the driven member and the ultrasonic vibrator, and a case to which the press member is fixed. Here, the press member has holes, and the case has guide pins which engage with the holes provided in the press member. Further, the press member is fixed to the case in a state bent in a press direction.

REFERENCES:
patent: 6211603 (2001-04-01), Iino et al.
patent: 7019437 (2006-03-01), Ouyang et al.
patent: 7250707 (2007-07-01), Okamoto
patent: 2008/0174206 (2008-07-01), Sakamoto
patent: 2008/0303384 (2008-12-01), Sakamoto
patent: 10-327589 (1998-12-01), None

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