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US 2016/0235167 A1Published application
Cap, Button Group and Method for Forming Button Group
AssigneeYKK Corporation
InventorNobuhisa ITO
Life of this patent
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AssigneeYKK Corporation
InventorNobuhisa ITO
Estimating the term…
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.
A cap of a button or button fastener, comprising a bottom and a circumferential side rising from an edge of the bottom,
A button group that includes a button group body and a cap which is attached to the button group body by swaging a circumferential side of the cap,
A method for forming a button group that includes a button group body and a cap, comprising:
Dependencies are inferred from the claim text.