A - Human Necessities – 44 – B
Patent
A - Human Necessities
44
B
24/47
A44B 19/02 (2006.01) A44B 19/14 (2006.01)
Patent
CA 1217920
SLIDE FASTENER Abstract of the Disclosure: A slide fastener comprising a fastener tape and a continuous synthetic resin fastener element row produced by casting means having a series of cavities and secured to one side edge of the fastener tape by means of element securing threads is disclosed. The fastener element row includes a plurality of individual fastener elements each including an engaging head and upper and lower legs extending from the engaging head. The individual fastener elements are in series connected at regular spaces by upper and lower synthetic resin spacer means integrally formed with the fastener elements adjacent to the free ends of the legs. The spacer means has a minimum cross sectional area in the central portion thereof and the diameter gradually increases from the central portion towards and being connected to the opposing walls of adjacent fastener elements. The slide fastener further comprises connecting threads passing through the upper and lower legs of the plurality of connected fastener elements adjacent and parallel to the spacer means and anchored to the legs. The invention improves flexibility of the fastener while retaining sufficient strength in bending.
413559
Murai Ryukichi
Takeshima Kiyoshi
Gowling Lafleur Henderson Llp
Yoshida Kogyo K.k.
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