Reusable slide fastener with emergency opening means
CA 1048741 A · Owner: Yoshida Kogyo K.K. · Inventors: Takamatsu, Ikuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener having an emergency opening zone at its intermediate point from which the fastener can be forced open in an emergency without pulling a slider along interengaged rows of fastener elements. To make this slide fastener reusable, a slider escape mechanism is arranged at its top end for causing the slider to ride on only one of the stringers by releasing the other stringer therefrom after the fastener has been forced open. Arranged at the bottom end of the fastener is a connect-disconnect terminal mechanism which may take the form of a box-and-pin separable coupling such, that the fastener stringers can be reconnected to permit normal slider movement after having been …
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 February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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.