Ultrasonic motor having a vibratory body and method of producing

Details Ultrasonic motor having a vibratory body and method of producing Ultrasonic motor having a vibratory body and method of producing

1994-04-19

1995-07-11

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

054323940

ABSTRACT:
An ultrasonic motor with a vibratory body which has plural groove groups formed in a surface of the vibratory body. Each groove group has at least two grooves which are formed parallel to one another. If the vibratory body has an annular shape, a groove forming member having as many cutting members as grooves in each groove group moves in a radial direction of the vibratory body while the cutting members rotate, simultaneously cutting each groove of a groove group in the surface of the vibratory body. When advancing vibratory waves are generated in a circumferential direction of the vibratory body, the state of vibration of the grooves in a groove group differs, and the resonance of the grooves is suppressed. If the vibratory body has a linear shape, the cutting members rotate as the groove forming member moves perpendicular to the vibratory body, simultaneously cutting each groove of a particular groove group.

REFERENCES:
patent: 5041750 (1991-08-01), Kitani
patent: 5079470 (1992-01-01), Kasuga et al.
patent: 5099167 (1992-03-01), Kimura et al.
patent: 5134333 (1992-07-01), Atsuta
patent: 5134348 (1992-07-01), Izukawa et al.
patent: 5300850 (1994-04-01), Okumura et al.
patent: 5327040 (1994-07-01), Sumihara et al.

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