Earpiece and earphone

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12256184
APP PUB NO 20220109922A1
SERIAL NO

17426298

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An earpiece whose inner cylinder is not crushed when the earpiece is inserted into an ear canal of a user is provided. An earpiece according to the present invention includes an inner cylinder 1 that includes one open end and the other open end and is attached to a sound conduit C of an earphone E, and an outer cylinder 2 connected to the one end of the inner cylinder and extending in an umbrella shape toward the other end of the inner cylinder so as to cover an outer surface 1b of the inner cylinder. The inner cylinder includes a fitting part 11 into which a tip of the sound conduit is fitted, and a sound guide part 12 configured to guide sound wave from the sound conduit to an ear canal. The sound guide part includes a constant diameter part 121 that has a constant inner diameter toward the one end side from the other end side and is disposed adjacent to the fitting part, and an expanded diameter part 122 that has an inner diameter continuously expanding toward one end side from the other end side and is disposed adjacent to the constant diameter part. The other end of the expanded diameter part is disposed closer to the other end side compared to a boundary B between an inner surface 2a of the outer cylinder and the outer surface of the inner cylinder in an axial direction orthogonal to a radial direction of the inner cylinder. The length between an inner surface 122a of the expanded diameter part and the outer surface of the inner cylinder in the radial direction of the expanded diameter part is the shortest at the boundary.

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First Claim

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Family

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Patent Owner(s)

  • AUDIO-TECHNICA CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takubo, Yosuke Kanagawa, JP 19 111

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Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 18, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 18, 2032
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Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00