Vibration wave driven motor

Details Vibration wave driven motor Vibration wave driven motor

1990-03-06

1992-03-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

050991671

ABSTRACT:
In a vibration wave driven motor disclosed herein, the arcuate portions of the vibration member thereof are formed into a shape in which flexural rigidity differs between the inner side and the outer side thereof, or a shape in which the torsional rigidity of the straight portions of the vibration member is made higher than the torsional rigidity of the arcuate portions, whereby a torsion component produced in the straight portions is made small by the straight portions.

REFERENCES:
patent: 4495432 (1985-01-01), Katsuma et al.
patent: 4786836 (1988-11-01), Tokushima
patent: 4810923 (1989-03-01), Tsukimoto et al.

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