Method and apparatus for extending the depth range of underwater

Details Method and apparatus for extending the depth range of underwater Method and apparatus for extending the depth range of underwater

1988-09-12

1989-08-01

Gellner, Michael L.

Ships

Building

Canal and ferry boats

114312, G03B 1708

Patent

active

048537225

ABSTRACT:
An apparatus for extending the depth range of an underwater pressure hull such as an underwater camera body by providing a means responsive to ambient pressure for equalizing the pressure between the hull and its environment.

REFERENCES:
patent: 1131712 (1915-03-01), Klein
patent: 3162107 (1964-12-01), Byers
patent: 3717078 (1973-02-01), Oqura
patent: 3759605 (1973-09-01), Johnson
patent: 4041507 (1977-08-01), Ko et al.
patent: 4113137 (1978-09-01), Wind
patent: 4281343 (1981-07-01), Monteiro

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