Piezoelectric transducer

Details Piezoelectric transducer Piezoelectric transducer

1989-06-08

1990-12-04

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

049756150

ABSTRACT:
A piezoelectric transducer includes a stack of plates of piezoelectric material which are energized to elongate in a predetermined direction and to provide amplified mechanical displacement to a drive member through a set of levers. The levers are connected at one end to a frame supporting the transducer, are provided with hinges between the point of connection and a point of engagement with the piezoelectric actuator and are also connected at their opposite ends to the drive member. The lever arms provide amplified linear displacement to the drive member in response to energization of the actuator. The lever arrangement also provides for exertion of high compressive forces on the piezoelectric actuator in response to a low force, large displacement-causing signal.

REFERENCES:
patent: 3614486 (1971-10-01), Smiley
patent: 3903435 (1975-09-01), Bouygues et al.
patent: 4408832 (1983-10-01), Hartman et al.
patent: 4435666 (1984-03-01), Fukui et al.
patent: 4506154 (1985-03-01), Scire
patent: 4518887 (1985-05-01), Yano et al.
patent: 4644213 (1987-02-01), Shibuya
patent: 4647808 (1987-03-01), Shibuya
patent: 4675568 (1987-06-01), Uchikawa et al
Piezo Stroke Amplifier, by Sakman, IBM Technical Disclosure Bulletin, vol. 20, No. 6, Nov. 1977, p. 2263.

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