Clutch separator plates
CA 2041699 A1 · Owner: Yesnik, Marc A. · Inventors: Yesnik, Marc A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clutch separator plate (24) utilized in a clutch or brake pack (10) for an automotive transmission for vehicles, with the plates being internally or externally splined to be operatively connected to the rotatable and/or stationary members (12,14) in a torsional coupling, wherein the separator plate surfaces (44) are treated by a suitable surface treatment, such as lapping and, then sputter coated with titanium nitride or a similar material (46) to provide a surface texture which enhances the frictional characteristics of the plate but does not substantially increase the wear of the lining of interleaved clutch plates (16).
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 May 2, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2013.
- 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.