Underwater communication device

Details Underwater communication device Underwater communication device

1988-07-05

1989-06-13

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Underwater system

Analog speech communication

367172, 181 18, 381151, H04R 102

Patent

active

048398713

ABSTRACT:
An underwater speaker system having a pressure equalization system enabling the speaker to operate in its intended fashion over a wide range of water depths, e.g. from two feet up to sixty feet. Water pressure is applied to a diaphragm that forms one wall of a variable volume an internal face of a speaker membrane. Pressures are equalized on opposite faces of the membrane to enhance speaker performance.

REFERENCES:
patent: 2844212 (1958-07-01), Hogan et al.
patent: 3320578 (1967-05-01), Ahrens et al.
patent: 3548371 (1970-12-01), Alexander
patent: 3670299 (1972-06-01), Kahn
patent: 3993973 (1976-11-01), Hutchins et al.
patent: 4070110 (1978-01-01), Payne
patent: 4277839 (1981-07-01), McKinney
"University Sound", Engineering Notes and Specifications (4 pages); publication date unknown.

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