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Expired Canadian patentCanada

Turbine engine starting fuel control

CA 1067984 A · Owner: General Motors Corporation · Inventors: Schroff, Dennis E.

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

Abstract of the Disclosure An engine start control circuit and fuel system for a gas turbine engine with a burner having a prevaporization chamber has metered fuel flow through a pilot and main fuel flow system in which a pilot nozzle of the air assist type is used to ignite fuel from a main fuel manifold that is supplied to the prevaporization chamber as a wall film of fuel. Control means are provided to energize the pilot fuel system to light the main fuel when the burner inlet temperature is below a predetermined set temperature corresponding to a temperature at which good fuel vaporization will occur on the walls of the prevaporization chamber. The control means also includes means …

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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 December 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedDecember 11, 1979
Term endedDecember 11, 1996
Patent numberCA 1067984 A
Classification (IPC)G05D7/06 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedDec 11, 1979Term endedDec 11, 1996

Sources & verification

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