Vibration drive actuator

Details Vibration drive actuator Vibration drive actuator

1993-07-06

1995-07-25

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

054365228

ABSTRACT:
A vibration driven motor comprises a bar-shaped elastic member and a piezo-electric element for causing a plurality of bending mode vibrations having a predetermined phase difference therebetween in a plurality of planes of the elastic member in order to drive a movable body by a rotary motion caused in particles of the elastic member. A support member which extends along an axial center of the bar-shaped elastic member is provided at one end or each end of the elastic member.

REFERENCES:
patent: 4290074 (1981-09-01), Royer
patent: 4484099 (1984-11-01), Kawai et al.
patent: 4857793 (1989-08-01), Okuno
patent: 5099166 (1992-03-01), Hirano et al.
patent: 5115161 (1992-05-01), Myohga et al.
patent: 5122700 (1992-06-01), Tamai et al.
patent: 5124611 (1992-06-01), Tamai et al.
patent: 5140215 (1992-08-01), Yamaguchi

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