Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

1990-07-17

1992-04-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

051071630

ABSTRACT:
An ultrasonic motor is provided which generates oscillations in only two directions so as to more efficiently provide for the transmission of driving torque from the driving member to the driven rotor member. The motor includes a stator having a driving portion on a side surface of the stator and a vibrating member for generating radial and circumferential oscillations on the stator member. A rotor is urged against the driving portion of the stator and a further member is provided which continually urges the rotor against the stator so as to provide for the transmission of drive between the rotor and stator.

REFERENCES:
patent: 4649311 (1987-03-01), Mukohjima et al.
patent: 4734610 (1988-03-01), Okumura et al.
patent: 4831305 (1989-05-01), Mukohjima et al.

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