Method for recovering breaker metal cord threads from tire
CA 2057929 A1 · Owner: Kalinchak, Valery V. · Inventors: Orlovskaya, Svetlana G.; Kalinchak, Valery V.; Gitelman, Alexander I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method involves heating metal cord threads and separating metal cord threads from rubber. Output is increased and power consumption of the process is lowered by preliminarily completely cutting through a tire in such a manner as to expose the ends of metal cord threads and by heating these threads to a temperature of complete thermooxidation destruction of rubber layers adjacent to these metal cord threads.
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
- Filed March 22, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2012.
- 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.