Acoustic sensor

Details Acoustic sensor Acoustic sensor

1990-07-10

1994-11-01

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367159, 367165, 367167, 367172, 310337, 310800, H04R 1700

Patent

active

053612400

ABSTRACT:
A pressure compensated hydrophone assembly consists of a hollow mandrel that has an outer surface. The central portion of the outer surface of the mandrel defines a concavity. A flexible, resilient piezoelectric film is wrapped several times around the mandrel. The volume between the inner wrap of the film and the concavity on the outer surface of the mandrel serves as a pressure compensation chamber. The hydrophone is responsive to varying hydrodynamic pressure fields but is substantially inert to acceleration forces, localized impacts and variations in hydrostatic pressure.

REFERENCES:
patent: 2762032 (1956-09-01), Vogel
patent: 3798474 (1974-03-01), Cassand et al.
patent: 4092628 (1978-05-01), Hall, Jr.
patent: 4525645 (1985-06-01), Shirley et al.
patent: 4653036 (1987-03-01), Harris et al.
patent: 4789971 (1988-12-01), Powers et al.
patent: 4805157 (1989-02-01), Ricketts
patent: 4810913 (1989-03-01), Beauducel et al.

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