Water resistant microphone

Details Water resistant microphone Water resistant microphone

1997-10-20

1998-09-22

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367168, 367176, H04R 144, H04R 1300

Patent

active

058124969

ABSTRACT:
A microphone for use in underwater applications. The microphone includes a dynamic magnet and coil assembly in a housing which incorporates a hydrophobic membrane. The membrane is sufficiently porous to permit air to pass therethrough. However, water cannot pass through the membrane. The housing permits water to drain away whereby a superior underwater microphone is obtained. This invention provides the diver with a military-style noise canceling microphone that retains exceptional sound reproduction quality because it is not encapsulated. However, the new microphone can be repeatedly exposed to the marine environment without failure.

REFERENCES:
patent: 2515031 (1950-07-01), Black, Jr.
patent: 3562451 (1971-02-01), Mullen, Jr. et al.
patent: 3764966 (1973-10-01), Abbagnaro
patent: 4139742 (1979-02-01), Walker
patent: 4920564 (1990-04-01), Allkins
patent: 5222050 (1993-06-01), Marren et al.

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