Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

1993-05-20

1994-10-18

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310340, H01L 4118

Patent

active

053571649

ABSTRACT:
An ultrasonic motor characterized by comprising:
an ultrasonic oscillator for generating ultrasonic oscillation on a specific surface;
a movable body pressure-bonded to a specific surface of the ultrasonic oscillator for moving the movable body by the ultrasonic oscillator in a given direction by ultrasonic oscillation; and
a sliding element provided on one of a contact surface of the ultrasonic oscillator and a contact surface of the movable body and having a porous oxide coating in which hydrators are formed to substantially fill small holes in the oxide coating.

REFERENCES:
patent: 3960772 (1976-06-01), Fort et al.
patent: 4436787 (1984-03-01), Mikami et al.
patent: 4542001 (1985-09-01), Iino et al.
patent: 4546018 (1985-10-01), Ryuzo et al.
patent: 4779018 (1988-10-01), Okuno et al.
patent: 4793182 (1988-12-01), Djorup
patent: 4914338 (1990-04-01), Murakami
patent: 4926085 (1990-05-01), Sawayama et al.

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