Engine cylinder head assembly having planar and cast components
CA 2214508 C · Owner: Oswald, Denis A. · Inventors: Oswald, Denis A.; Emmer, Mark W.; Johnson, Robert S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The cylinder head assembly (10) includes a cast member (12) and a substantiallyplanar member (14) that is affixed to an upper end of the case member (12). The substantially planar member (14) includes apertures (74 76) to anchor the intake and exhaust rocker studs (79), apertures that receive the intake and exhaust valve and apertures that receive the push, rod guides. The substantially planar member also has spring locators for the intake and exhaust valve (32) return springs. The cast member (12) is affixed to the engine cylinder (17), and includes cast intake and exhaust manifolds (26) bosses for receiving the intake, and exhaust valves (32) a cast pocket for receiving the intake and …
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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 9, 1996 and granted September 24, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2018.
- 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.