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Expired Canadian patentCanada

Fuel and air injection for multi-cylinder international combustion engines

CA 2075697 C · Owner: Leighton, Sam Russell · Inventors: Sayer, Chris N.; Haas, Albert L.; Alsobrooks, Daniel E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A fuel and air assembly is provided for furnishing an air and fuel mixture under pressure to a cylinder of an ignition fired internal combustion engine which utilized a solenoid-actuated valve timed to admit the mixture to the cylinder. A standard fuel injector is interfaced with one end of a mixing insert which is connected at the other end to an air passage of a fuel rail. At one side of the insert is an outlet passage leading to the solenoid actuated valve which has an outlet end shaped to enhance fuel distribution and combustion. The mixing insert contains an air filter and passages to conduct air to the common passage for air and fuel. The insert is captured in the fuel rail between a …

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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 August 10, 1992 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 1992
GrantedJanuary 19, 1999
Term endedAugust 10, 2012
Patent numberCA 2075697 C
Classification (IPC)F02M57/02 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedAug 10, 1992Patent grantedJan 19, 1999Term endedAug 10, 2012

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.