A fuel injector for an internal combustion engine
CA 2271503 C · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Takeda, Keiso; Sugimoto, Tomojiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a fuel injector for an internal combustion engine having an injection hole a valve body, and a fuel reservoir on the downstream side of a seat portion of the valve body the width of the injection hole is gradually narrowed inward at a predetermined included angle an opening on the outer side of the injection hole has a width sufficiently larger than the height thereof. The tip of the fuel reservoir is communicated with the injection hole via a passage portion which has a uniform cross section. On each transverse plane within the height of the injection hole the tip of the fuel reservoir has an arc shape on the transverse plane passing through the center of the height of the injection …
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 11, 1999 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2021.
- 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.