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Expired Canadian patentCanada

Timing mechanism for a fuel supply system

CA 1086588 A · Owner: Cummins Engine Company, Inc. · Inventors: Perr, Julius P.

CIPO record

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

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Abstract From the Canadian patent

This disclosure deals with a mechanism for adjusting the timing of initiation of injection by a fuel injector of an internal combustion engine. The mechanism includes a piston connected to be moved by a drive for the injector, and another piston which is connected to move the plunger of the injector. timing fluid supply is provided for metering fuel into a timing chamber formed between the two pistons. The timing fluid forms a variable length hydraulic link between the two pistons, and the length of the link determines the timing of initiation of injection. The mechanism further includes pressure relief means for releasing a portion of the timing fluid after the termination of injection, …

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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

  • Granted September 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 28, 1977
GrantedSeptember 30, 1980
Term endedSeptember 30, 1997
Patent numberCA 1086588 A
Classification (IPC)F02M57/02 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedDec 28, 1977Patent grantedSep 30, 1980Term endedSep 30, 1997

Sources & verification

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