Slide fastener
CA 1180885 A · Owner: Optilon W. Erich Heilmann G.M.B.H. · Inventors: Heimberger, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slide fastener having two carrier strips each having an attached, row of base members each base member having a single arm made from thermoplastic material and having a carrier band between them wherein each, individual single arm base member is produced by a continuous injection process in molds having a mold wheel and a mold belt the portion produced, in the mold wheel having a mushroom shaped head and the carrier band is carrier thread through the mold wheel portion and the portion produced in, the mold belt having projecting lateral closing elements to cooperate with respective coupling heads on the other carrier strip.
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 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
- 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.