The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2018
Filed:
Oct. 02, 2013
Ykk Corporation, Tokyo, JP;
Nobuhisa Ito, Tokyo, JP;
YKK Corporation, , JP;
Abstract
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.