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Expired Canadian patentCanada

Speed limiting means for variable-speed prime mover

CA 1249021 A · Owner: General Electric Company · Inventors: Vest, Glenn E.

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

In a diesel-electric locomotive, maximum speed of the diesel engine is automatically limited as a function of the temperature of the engine lubricating oil so as to prevent damage to the engine, to the engine-driven lube oil pump and to the external, components of the engine lube oil system when the oil is relatively cool and hence very viscous

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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 January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 1986
GrantedJanuary 17, 1989
Term endedJanuary 17, 2006
Patent numberCA 1249021 A
Classification (IPC)F02D41/06 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedFeb 28, 1986Patent grantedJan 17, 1989Term endedJan 17, 2006

Sources & verification

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