Vibration wave motor

Details Vibration wave motor Vibration wave motor

1987-02-20

1988-09-13

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, H01L 4108

Patent

active

047712031

ABSTRACT:
A vibration wave motor for generating a travelling vibration wave in a vibration member by applying a periodic voltage to an electro-mechanical energy transducer. An anti-movement device is provided to contact the vibration member at a pitch not equal to a multiple of n.lambda./2, where n is an integer and .lambda. is the wavelength of a vibration wave so that the vibration member is prevented from rotating without reducing the drive efficiency of the motor.

REFERENCES:
patent: 4580073 (1986-04-01), Okumura et al.
patent: 4645964 (1987-02-01), Hiramatsu et al.
patent: 4649311 (1987-03-01), Mukohjima et al.

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