Speaker

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12015895
APP PUB NO 20230142560A1
SERIAL NO

17919715

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A speaker includes: a diaphragm having a dome shape; a tubular member having the diaphragm disposed inside, and having an inner diameter increasing toward a front; and a phase plug. The phase plug includes: a front surface, a rear surface facing a central portion on a front surface of the diaphragm at a constant interval in parallel, and a side surface connecting the front surface and the rear surface. A front surface of the phase plug is larger than a rear surface of the phase plug as viewed in a front-rear direction of a speaker. At least a part of a side surface of the phase plug has an inclined surface extending outward while extending forward, faces an inner circumferential surface of the tubular member and a front surface of the diaphragm, and directs a sound wave generated from the diaphragm toward an inner circumferential surface of the tubular member.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTDJAPAN

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Honda, Kazuki Mie, JP 97 1023
Ikeda, Junichi Kyoto, JP 76 892
Kiyama, Ippei Hyogo, JP 6 9
Nishida, Masashi Osaka, JP 47 485

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