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Expired Canadian patentCanada

Two cycle engine with fuel injector

CA 2004179 C · Owner: Chonan, Mitsugi · Inventors: Chonan, Mitsugi; Tachibana, Fusao; Suzuki, Kazuo

CIPO record

Overview

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

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Abstract From the Canadian patent

A two-cycle engine with fuel injector comprises an engine body, a crank case defining crank chambers for respective cylinders, the crank chambers being provided with intake ports, throttle bodies, and fuel injectors. The throttle bodies comprise throttle passages and throttle valve means and the injectors are inserted in the throttle passages downstream of the throttle valve means. The throttle passages are connected to each other through a balance passage at portions downstream the throttle valve means. An air chamber may be formed on the way of the balance passage. The throttle passages connected by the balance passage to one group of cylinders having phase difference of 180° of the …

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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 November 29, 1989 and granted July 5, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 29, 1989
GrantedJuly 5, 1994
Term endedNovember 29, 2009
Patent numberCA 2004179 C
Classification (IPC)F02B75/02 +1 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 29, 1989Patent grantedJuly 5, 1994Term endedNov 29, 2009

Sources & verification

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