Stretchable slide fastener
CA 1310477 C · Owner: Ykk Corporation · Inventors: Tsubata, Noritaka; Matsuda, Yoshio; Horikawa, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stretchable slide fastener includes a pair of stretchable stringer tapes each having a longitudinal edge and a row of coupling elements mounted on the longitudinal edge at a pitch. The pitch of the row of coupling elements is variable as the longitudinal edge is stretched. Each of the coupling elements includes a coupling head having a height, and at least the longitudinal edge being longitudinally stretchable by at least 10 % such that the pitch of the coupling elements remains smaller than an interval which is twice the height of the coupling head.
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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
- 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.