Rubber/metal combustion seal
CA 2216391 A1 · Owner: Tensor, Paul M. · Inventors: Tensor, Paul M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combustion seal for a cylinder head gasket of an internal combustion engine includes a corrugated rigid carrier having a radially extending base portion the radially, innermost peripheral edge defining a portion of a cylinder bore opening and three channels, defined radially inwardly of the base portion and radially outwardly of the inner peripheral edge. The radially innermost and outermost channels open in a first axial direction while the channel disposed between them opens in the opposite axial direction. An elastomeric ring is received in all but the radially outermost channel first face of the rings in facial contact with a root of the channel and an opposing second face defined …
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 September 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2019.
- 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.