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:
Jan. 29, 2008
Filed:
Feb. 22, 2005
Teruo Ozaki, Toyama-ken, JP;
Makoto Yoshida, Toyama-ken, JP;
Futoshi Kozato, Toyama-ken, JP;
YKK Corporation, Tokyo, JP;
Abstract
A metallic slide fastener element in which an exposed portion outside of an element is finished uniformly with a high smoothness and the fixing strength to a fastener tape is intensified, and a method for effectively manufacturing the same element, wherein a metallic flat type wire rod is placed on a die and the flat type wire rod is punched out with a punch so as to produce a slide fastener element, and at this time, a mouth on a punch side of the die or a peripheral edge of the die is chamfered at a radius of 0.01 to 1.0 mm and a clearance between the punch and the die is set to 0 to 30 μm, so that an element, which has a cut surface comprising a shear surface of 80% or more and a fracture surface of less than 20% and is suitable as a slide fastener to be attached to a high quality product, is obtained.