Waterproof microphone

Details Waterproof microphone Waterproof microphone

1997-10-24

2000-01-25

Loomis, Paul

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

381355, 381189, 12820119, H04R 2500

Patent

active

060185856

ABSTRACT:
A waterproof microphone according to the present invention includes a case; an acoustic terminal unit having a front acoustic terminal and a rear acoustic terminal to be accommodated in the case through a unit holder and a unit case; waterproof films in the case for covering the front acoustic terminal and the rear acoustic terminal of the acoustic terminal unit, respectively; the waterproof films being deformed at a predetermined water pressure; and restraining means provided between said acoustic terminal unit and said waterproof films for restraining the deformation of each said waterproof films, so that the thickness and shape of the waterproof films can be each adjusted.

REFERENCES:
patent: 1901065 (1933-03-01), Spotts
patent: 2556168 (1951-06-01), Cragg et al.
patent: 3642558 (1972-02-01), Gorike
patent: 4065648 (1977-12-01), Cvetko et al.
patent: 4807294 (1989-02-01), Iwata et al.
patent: 5828761 (1998-10-01), Langer

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