Flexion-plate hydrophones

Details Flexion-plate hydrophones Flexion-plate hydrophones

1975-03-05

1977-03-01

Tudor, Harold

Communications: electrical

Selective

Interrogation response

310 86, 340 13R, H04B 1300

Patent

active

040104419

ABSTRACT:
A hydrophone including a flexible membrane which is encased along its periphery within two rings. A piezoelectric disc is placed against each face of the membrane. The membrane, encasement, and discs form a unit which is embedded in an elastomeric material such as polyurethane. The elastomeric material forms a window of reduced thickness facing each disc and provides the sole mechanical connection with a rigid support. The hydrophone has good directivity and good sensitivity over a sound frequency band several KHZ wide.

REFERENCES:
patent: 2448365 (1948-08-01), Gillespie
patent: 3054084 (1962-09-01), Parssinen et al.
patent: 3166730 (1965-01-01), Brown, Jr. et al.
patent: 3202962 (1965-08-01), Elston
patent: 3252016 (1966-05-01), Hayer, Jr. et al.
patent: 3255431 (1966-06-01), Howatt
patent: 3573394 (1971-04-01), Birnbaum
patent: 3763464 (1973-10-01), Laurent
patent: 3832762 (1973-12-01), Johnston et al.

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