Stretchable fastener stringer and slide fastener
US8151418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2009 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Nov 30, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/2532
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.