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:
Apr. 10, 2012
Filed:
Oct. 28, 2009
Eiji Nakayama, Toyama-Ken, JP;
Hiroyuki Konokawa, Toyama-Ken, JP;
Takahiko Aoki, Toyama-Ken, JP;
Takumi Arai, Toyama-Ken, JP;
Yuichi Miyazaki, Toyama-Ken, JP;
Eiji Nakayama, Toyama-Ken, JP;
Hiroyuki Konokawa, Toyama-Ken, JP;
Takahiko Aoki, Toyama-Ken, JP;
Takumi Arai, Toyama-Ken, JP;
Yuichi Miyazaki, Toyama-Ken, JP;
YKK Corporation, , JP;
Abstract
A stretchable fastener stringer for a slide fastener includes a fastener tape having a tape main portion and an element attaching portion and a continuous fastener element which is attached to the element attaching portion. The fastener tape has stretchability due to an elastic yarn being combined by weaving or knitting and the fastener element includes a coupling head, upper and lower leg portions which are extended from the coupling head and a connecting portion which connects the upper and lower leg portions, therebetween of adjacent fastener elements. In this fastener stringer, a value of a bulging ratio which is the ratio between a dimension of the coupling head in the tape longitudinal direction and a dimension of the upper and lower leg portions in the tape longitudinal direction is set to be larger than 1.80 and not larger than 2.33.