Ultrasonic actuator

Details Ultrasonic actuator Ultrasonic actuator

1993-12-07

1995-03-14

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310321, H02N 200, H01L 4108

Patent

active

053979559

ABSTRACT:
The ultrasonic actuator of the present invention includes a rod shaped vibration body having a first group of faces and a second group of faces, an exciter which is provided on at least one face of the first group of faces of the vibration body and which generates traveling waves, and a movable member which is pressed against the vibration body and is moved by the traveling waves. There is formed a first reflecting portion at one end portion of the vibration body, and there is formed a second reflecting portion at the other end portion of the vibration body. A support device which supports the vibration body is joined to at least one of the both end portions at which the first and second reflecting portions are formed.

REFERENCES:
patent: 2661432 (1953-12-01), Mumper
patent: 2661433 (1953-12-01), Jaffe
patent: 4510411 (1985-04-01), Hakamata et al.
patent: 4562374 (1985-12-01), Sashida
patent: 4857793 (1989-08-01), Okuno
patent: 4882500 (1989-11-01), Iijima

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