Ultrasonic piezoelectric transducer and ultrasonic actuator

Details Ultrasonic piezoelectric transducer and ultrasonic actuator Ultrasonic piezoelectric transducer and ultrasonic actuator

1995-06-07

1996-06-04

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 200, H01L 4108

Patent

active

055236430

ABSTRACT:
An ultrasonic piezoelectric transducer and an ultrasonic actuator for performing enhanced elliptical vibration comprise a first laminated piezoelectric element having a first fixed end, a resonator mounted to the opposite end of the first laminated piezoelectric element, a second laminated piezoelectric element having one end thereof fixedly mounted to the resonator in a direction other than a vibrating direction of the first laminated piezoelectric element, and a load mass fixedly mounted to the opposite end of the second laminated piezoelectric element. This structure permits the enhanced elliptical vibration of the transducer to have a large, controllable amplitude.

REFERENCES:
patent: 4651046 (1987-03-01), Ohya et al.
patent: 4780639 (1988-10-01), Shirasu
patent: 4947077 (1990-08-01), Murata
patent: 5079471 (1992-01-01), Nygren
patent: 5159226 (1992-10-01), Montgomery

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