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. 06, 1998
Filed:
Jul. 21, 1995
Toshiharu Wakashima, Toyama-ken, JP;
Sakae Aimono, Toyama-ken, JP;
YKK Corporation, Tokyo, JP;
Abstract
A synthetic resin monofilament being continuously supplied is intermittently stamped to form head portions as flattened protuberances bulging laterally. Then the stamped monofilament is bent at the head portions to form leg portions and turnover portions bridging the leg portions of adjacent head portions, forming an continous coupling element row. While the continous coupling element row is conveyed by a conveying section, the head portions are heated and softened by a heating section, and a head-portion shaping tool having arcuate recesses is brought into contact with the individual outwardly curved softened head portions to shape the external shape of each head portion into an arcuate shape.