Cap, button group and method for forming button group

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United States of America Patent

PATENT NO 10159312
APP PUB NO 20160235167A1
SERIAL NO

15025923

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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There is provided a cap, which is one part of a button fastener. The cap comprises a bottom and a circumferential side rising from an edge of the bottom. The cap is composed of an inner layer made of aluminum or aluminum alloy as a first material and an outer layer made of copper or copper alloy as a second material. The first and second layer are laminated on each other continuously across the bottom and the circumferential side. A Vickers hardness of the second material may be harder than a Vickers hardness of the first material. A tensile strength of the first material may be less than 260 N/mm2, and a tensile strength of the second material may be equal to or higher than 260 N/mm2.

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First Claim

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Patent Owner(s)

  • YKK CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Nobuhisa Tokyo, JP 7 49

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