Separable slide fastener
CA 1284574 C · Owner: Yamamoto, Noboru · Inventors: Tsubokawa, Yoshitoki; Yamamoto, Noboru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A separable slide fastener includes a pair of stringer tapes made of a pliable thread-free material such as nonwoven fabrics, a row of coupling elements on each stringer tape, a separable end assembly connected to bottom end portions of the stringer tapes, and reinforcement strips extending longitudinally over at least one side of the respective stringer tapes from the bottom end portions respectively. The reinforcement strips have a length greater than that of the bottom end assembly, with the result that portions of the stringer tape contiguous to the upper end of the end assembly are prevented from being bent or stretched even after repeated operation of the fastener.
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 June 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2008.
- 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.