Vibration actuator

Details Vibration actuator Vibration actuator

1996-01-03

1998-07-07

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 200

Patent

active

057774242

ABSTRACT:
A vibration actuator includes a vibration member constituted by two substantially semi-cylindrical elastic members, a relative moving member disposed on an end face of the vibration member, a first electro-mechanical converting element for generating a torsional vibration about the axis of the vibration member, a second electro-mechanical converting element for generating a longitudinal vibration in the axial direction of the vibration member, a pressing member for making the relative moving member and the vibration member press contact with each other, and a support member the outer circumferential portion of the vibration member to protrude therefrom in the radial direction of the vibration member, and which supports the vibration member.

REFERENCES:
patent: 3481411 (1969-12-01), Wood
patent: 3485307 (1969-12-01), Riley et al.
patent: 3595325 (1971-07-01), Libby et al.
patent: 3710150 (1973-01-01), McMaster
patent: 4165961 (1979-08-01), Yamamoto et al.
patent: 4965482 (1990-10-01), Ohnishi et al.
patent: 5051647 (1991-09-01), Uchikawa et al.
patent: 5115161 (1992-05-01), Myohga et al.
patent: 5469011 (1995-11-01), Safabakhsh
patent: 5578888 (1996-11-01), Safabakhsh

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