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:
Jun. 09, 1992
Filed:
Mar. 26, 1991
Applicant:
Inventors:
Yoshinori Fujisaki, Toyama, JP;
Sakae Aimono, Toyama, JP;
Assignee:
Yoshida Koygyo K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
29410 ; 24394 ;
Abstract
In a method of forming coupling head portions on a monofilament of thermoplastic synthetic resin for production of a slide fastener coupling element, the monofilament is stamped from one side to form recessed small-thickness portions bulging from the other side of the monofilament, and then the monofilament is bent at opposite ends of each of the recessed small-thickness portions in such a manner that the concave side of each small-thickness portions faces outwardly.