Internal combustion engine for small planing watercraft
CA 2204929 C · Owner: Kawamoto, Yuichi · Inventors: Kawamoto, Yuichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A four-cycle engine mounted on a small planing watercraft is disclosed, in which an oil tank is integrally formed with the side walls of a cylinder head, a cylinder block, a crank case or an oil pan of the engine body.An oil receptacle is arranged on the bottom of the engine body and communicates with an internal space of the crank case. The engine body includes an oil passage for transporting the engine oil collected in the oil receptacle to the oil tank by means of a scavenging pump and an oil passage, for supplying the engine oil in the oil tank to the various parts of the engine body by means of a feed pump. The oil tank may be formed of a tank base portion integral with the side walls …
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 9, 1997 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 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.