Diaphragm, spherical-shell diaphragm and electroacoustic transducer, and method of manufacturing electroacoustic transducer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7743879
APP PUB NO 20090014233A1
SERIAL NO

12232206

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A diaphragm in one mode of the present invention comprises an outer shape section having a circle with one diameter, or a shape of a polygon to be inscribed in a circle with the one diameter; an inner shape section protruding in one direction with regard to a plane including the outer shape section, wherein a shape formed by projecting the inner shape section on the plane is rotationally symmetric about the central axis of the circle; and a vibrating face section linking the outer shape section and the inner shape section and having an inclined face inclined to the central axis, wherein any one of cross-sectional shapes of the vibrating face section is rotationally symmetric about an eccentric axis which is eccentric with regard to the central axis, the cross-sectional shapes being defined by a plane intersecting perpendicularly to the central axis. An electroacoustic transducer uses the above diaphragm.

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Patent Owner(s)

  • JVC KENWOOD CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inagaki, Kazuyuki Yokohama, JP 14 94
Nakaso, Jiro Yokohama, JP 6 71
Omoda, Manabu Yokohama, JP 9 87

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