Oil and heat resistant cogged belt obtained through the use of elastomeric compositions
CA 2086292 C · Owner: Caoutchouc Manufacture Et Plastiques · Inventors: Le Devehat, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flexible toothed belt of which the back (5) and teeth are formed from a substrate (2) made with CSM or ACSM elastomer and are associated with an HNBR elastomeric compound covering the surface of the teeth protected by a fabric (3) treated with HNBR, distinctive in that the interface linking the two elastomeric compounds is set back toward the interior of the teeth by installation of an intermediate moderating element (7) and/or (9) of HNBR elastomeric compound potentially reinforced by short fibres and in that the flexible core (1) of the said belt is enclosed in the area between two neighbouring teeth in the HNBR elastomeric compound constituting the intermediate moderating element. As a …
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 December 24, 1992 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 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.