Piezoelectric acoustic transducer

Details Piezoelectric acoustic transducer Piezoelectric acoustic transducer

1997-04-25

1999-01-05

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367161, 367163, 367174, 310324, 310332, H04R 1700

Patent

active

058569561

ABSTRACT:
The piezoelectric-acoustic transducer of the present invention has a hollow case provided with a sound hole. A piezoelectric actuator is disposed inside this case that has one end fixed to the case and that bends in the direction of the thickness of the case when voltage is applied. A diaphragm is secured to one portion of the piezoelectric actuator and is positioned at a distance from the piezoelectric acturator in the direction of the thickness of the case.

REFERENCES:
patent: 5382864 (1995-01-01), Morikawa et al.
patent: 5619997 (1997-04-01), Kaplan

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