Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having protective or sheilding feature
Reexamination Certificate
2005-03-08
2005-03-08
Ni, Suhan (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having protective or sheilding feature
C381S333000, C381S334000, C379S437000, C379S440000
Reexamination Certificate
active
06865278
ABSTRACT:
The device for implanting a microphone (1) and at least one pressure compensating member (2) in a telephone watch consists in placing the microphone and the compensating member close together. A membrane (5) covers the microphone (1) and a disc (6) forms the compensating member (2). The membrane (5) and the disc (6) open at least partially into a single chamber (7) opening onto the outside via an opening (8) in the form of a slot. A liquid (arrow A) can be injected through this slot to rid the chamber, the membrane and the disc of foreign bodies which could accumulate therein.
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patent: 6512834 (2003-01-01), Banter et al.
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patent: 9521512 (1995-08-01), None
Dinnissen Paul
Dubugnon Dominique
Mignot Jean-Pierre
Asulab S.A.
Ni Suhan
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