Underwater acoustic devices

Details Underwater acoustic devices Underwater acoustic devices

1982-02-11

1984-12-04

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

310800, 367155, H04R 1700

Patent

active

044868693

ABSTRACT:
The invention relates to underwater acoustic devices and arrays formed from such devices, and which in use are suspended in water from a buoy as other flotation equipment. An underwater device in accordance with the invention comprises an elongate tubular structure which is preferably suspended from a buoy having an aerial mounted on the buoy and connected to a radio transceiver housed within the buoy, wherein the tubular structure includes a plurality of transducer elements spaced apart along a common axis, preferably by spacer tubers wherein each of the transducer elements comprises a tube, or part of a tube, composed of a piezoelectric material, preferably polyvinylidene fluoride, and electrical terminal means contacting inner and outer curved surfaces of each tubular element.

REFERENCES:
patent: 3286227 (1966-11-01), Aldrich
patent: 3418624 (1968-12-01), Massa
patent: 3444511 (1969-05-01), Morrow
patent: 4183010 (1980-01-01), Miller
patent: 4376302 (1983-03-01), Miller

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