Separable top end construction for emergency opening slide fasteners
CA 1046735 A · Owner: Yoshida Kogyo K.K. · Inventors: Kanzaka, Yoshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener having at its top end a slider escape mechanism which comprises a cooperative pair of yieldable top stops, and an extra length of fastener elements carried on one of the stringer tapes, such that the slider can be forced past the yieldable top stops to ride onto the extra fastener elements in an emergency and hence to release the other stringer tape. To permit ready withdrawal of the said other stringer tape from the slider, a reinforcing sheet of thermoplastic material or the like is heat-sealed or otherwise attached to it's upper end portion, from which at least the bead of the tape is removed. The fastener can be forced open from its top end without pulling the slider …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.