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US 8,572,816 B2Granted
Slide fastener
AssigneeYKK Corporation
InventorsKenji Dono, Shunji Akashi, Hiroshi Ishisaka, Naoyuki Himi
Life of this patent
Estimating the term…
Abstract
A slide fastener in which a fastener element has first and second leg portions continuously disposed at both ends of the coupling head is folded in half at its center, and the first leg portion is attached to a coupling element attaching portion of a fastener tape by a sewing thread. A vulnerable portion which is cut out into a V is formed on the bent end face of the coupling head.
Claims4
A slide fastener comprising:
- a pair of right and left fastener tapes and coupling elements which are attached to plural positions along right and left coupling element attaching portions which are side edge portions of the fastener tapes opposing each other,
- wherein opposing coupling element rows are capable of being coupled and separated,
- each of the coupling elements includes a coupling head which engages with an opposing coupling element,
- the coupling head includes a vulnerable portion in a central portion thereof, whose breaking resistance is weakened,
- first and second leg portions are continuously disposed on end portions of the coupling head in a direction extending away from the coupling head,
- the first leg portions and the second leg portions are sewn to the fastener tapes via a sewing portion,
- the vulnerable portion includes a cut-out portion located on an outer face of the coupling head, and
- the sewing portion comprises a first sewing portion at a first position located on an inner face of the first leg portion between the coupling head and an end of the first leg portion and a second sewing portion at a second position located on an outer face of the second leg portion between the coupling head and an end of the second leg portion.
5 more elements
Dependencies are inferred from the claim text.