Push-pull cable made using porous expanded fibril oriented ptfe tape
CA 2132703 C · Owner: Perko, Vincent L. · Inventors: Perko, Vincent L.; Johnson, Jerry Leroy; Myers, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanical push-pull (10) cable comprising a steel wire core (II) a layer of fluoropolymer adhesive (13) covering the steel wire core, and an outer layer (17) of porous PTFE covering the layer of fluoropolymer adhesive. The mechanical push-pull cable may be a component of a mechanical cable system wherein the mechanical push-pull cable slides axially within a surrounding support tube (19). The support tube preferably has an inner surface comprised of non-porous PTFE. The support tube may optionally incorporate a contamination seal at the ends of the support tube to reduce the entrance of contaminating dirt and water into the system. The porous PTFE layer (17) may optionally be applied in …
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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
- Filed June 4, 1992 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2014.
- 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.