Acoustic transducer

Details Acoustic transducer Acoustic transducer

1992-12-02

1994-10-18

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367157, 367169, 181105, 181106, 181110, 310334, 310337, 310800, H04R 1700

Patent

active

053574869

ABSTRACT:
A piezoelectric film strip is wrapped a plurality of times around a flexible inert mandrel that has standoff collars on each end. The film-wrapped mandrel is hermetically sealed inside a hollow rigid inert cylinder. Electrodes provide electrical communication with the film strip which forms the active element of the transducer. Variations in hydrodynamic pressure flex the film strip in tension to generate a voltage.

REFERENCES:
patent: 4134097 (1979-01-01), Cowles
patent: 4653036 (1987-03-01), Harris et al.
patent: 4674067 (1987-06-01), Zemanek, Jr.
patent: 4756192 (1988-07-01), Heine et al.
patent: 4809244 (1989-02-01), Penneck et al.
patent: 4810913 (1989-03-01), Beauducel et al.
patent: 4841192 (1989-06-01), Tetlie et al.
patent: 4918666 (1990-04-01), Beauducel et al.
patent: 4984222 (1991-01-01), Beauducel et al.
patent: 5130953 (1992-07-01), Grosso

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