Electromechanical transducer

Details Electromechanical transducer Electromechanical transducer

1972-08-10

1976-07-27

Tudor, Harold

Communications: electrical

Selective

Interrogation response

310 91, 310 96, 340 8LF, 340 9, H04B 1300

Patent

active

039720187

ABSTRACT:
An electromechanical transducer employing an arcuate piezoelectric shell element having lateral edges affixed to a restraining member wherein stresses produced in the element by electrical energy produce element flexural vibrations. The piezoelectric shell element and restraining member are located within a chamber defined by a boot and rigid end caps attached to the restraining member. Hydraulic fluid within the transducer chamber equalizes pressures upon the shell element functioning as an acoustic coupling and as a pressure equalizer. In an embodiment of the invention a pair of piezoelectric shell elements are attached to opposite sides of a planar restraining plate.

REFERENCES:
patent: 2399820 (1946-05-01), Morgan
patent: 2405605 (1946-08-01), Goodale, Jr. et al.
patent: 2565159 (1951-08-01), Williams
patent: 2788454 (1957-04-01), Zapponi
patent: 2795709 (1957-06-01), Camp
patent: 2876427 (1959-03-01), Harris
patent: 3073203 (1963-01-01), Evans
patent: 3230504 (1966-01-01), Horan et al.
patent: 3489997 (1970-01-01), Morris

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