Low friction valve train
CA 2102575 C · Owner: Ford Motor Company Of Canada Limited · Inventors: Cikanek, Harry Arthur; Kabat, Daniel Michael; Rao, V. Durga Nageswar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low friction valve train is provided for use with a high speed internal combustion engine The valve, train includes a tappet formed of a lightweight metal preferably aluminum or magnesium alloy. The outer surface of said tappet is impregnated with a solid film lubricant to provide reduced friction during operation. The valve train further includes a cam shaft having cams, the wear/bearing surfaces of the cams are impregnated with a solid film lubricant to further reduce friction during operation.
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 November 5, 1993 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2015.
- 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.