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Expired Canadian patentCanada

Method for controlling fuel injector lift

CA 1264624 C · Owner: Siemens-Bendix Automotive Electronics L.P. · Inventors: Hensley, Thomas Edward

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 method for controlling fuel injector lift control provides accurate lift dimensions over the life of the injector 10. The method can be implemented by sophisicated equipment for more automated operation but the steps of measuring and determining the spacing between the pole piece 18 and the armature member 26 and forming a spacer 12 as a result of such measurements substantially follow the concept of differential gaging 36 and stepper motor 52 controlled press 38. Once a spacer 12 is sized, it is mated with the housing member 14 and the valve body assembly 24 and held in place by unitizing the injector 10.

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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 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 1986
GrantedJanuary 23, 1990
Term endedJanuary 23, 2007
Patent numberCA 1264624 C
Classification (IPC)H01F7/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedJuly 14, 1986Patent grantedJan 23, 1990Term endedJan 23, 2007

Sources & verification

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