Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

1990-02-06

1992-09-22

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

051500000

ABSTRACT:
Provided herein is an ultrasonic motor in which at least fluorocarbon polymer is present on the contact surface of at least either of the rotor of the stator. Since the fluorocarbon polymer provides a smooth contact surface, the ultrasonic motor generates no noise and produces a stable starting torque and holding torque. In addition, it has a long life with a minimum of wear.

REFERENCES:
patent: 4736129 (1988-04-01), Endo et al.
patent: 4739212 (1988-04-01), Imasaka et al.
patent: 4939404 (1990-07-01), Inagaki et al.

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