Gasket for reducing electromagnetic interference in a...

Details Gasket for reducing electromagnetic interference in a... Gasket for reducing electromagnetic interference in a...

2005-05-16

2009-10-13

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S361000

Reexamination Certificate

active

07602931

ABSTRACT:
A boundary microphone including a microphone case is provided whereby sufficient shielding performance can be achieved against strong electromagnetic waves of cellular phones. In the boundary microphone, a microphone case1includes a flat metallic base10opened on its top surface and a metallic microphone cover20mounted on the base10so as to cover the top surface of the base10, the microphone cover20having a number of openings (sound wave introduction holes) thereon, the microphone case1housing a microphone unit31, wherein a gasket40having elasticity and conductivity is disposed between the base10and an edge face20aof the microphone cover20.

REFERENCES:
patent: 5640457 (1997-06-01), Gnecco et al.
patent: 6291369 (2001-09-01), Yoshikawa et al.
patent: 2002/0108767 (2002-08-01), Kim

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