Piezoelectric transducers and acoustic antennas which can be imm

Details Piezoelectric transducers and acoustic antennas which can be imm Piezoelectric transducers and acoustic antennas which can be imm

1977-07-25

1979-04-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

340 10, 340 9, 340 8PC, H01L 4110

Patent

active

041514378

ABSTRACT:
Piezoelectric transducers and antennas comprising a plurality of identical transducers arranged coaxially, each transducer comprising a ring and a plurality of piezoelectric motor elements arranged radially against the inner wall of the ring. The rings form an envelope which is closed by two covers and the envelope encloses an axial cylindrical channel containing a piston. The inside of the envelope contains a solid material which is elastomeric or rigid and is separated from the inner walls of the envelope by a small clearance which communicates with the end of the cylinder. An application is the construction of acoustic antennas intended to be immersed to great depths.

REFERENCES:
patent: 2897475 (1959-07-01), Harris
patent: 3018466 (1962-01-01), Harris
patent: 3262093 (1966-07-01), Junger et al.
patent: 3337843 (1967-08-01), Kendig et al.
patent: 3541502 (1970-11-01), Behrendt et al.

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