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Expired Canadian patentCanada

Method and apparatus for actuating vehicle transmissions

CA 1215895 A · Owner: Isuzu Motors Limited · Inventors: Uriuhara, Makoto; Ishida, Hisao; Ishihara, Masaki

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Abstract From the Canadian patent

A vehicle transmission system has an internal lever for changing transmission gears, a select actuator for moving the internal gear to neutral positions Nl N2, N3 in first direction, a shift actuator for moving the internal lever to 1st - 5th gear positions and a reverse position in second direction substantially normal to the first direction, and a clutch actuator for actuating a clutch. While any one of the actuators is in operation the pressure of a fluid discharged from the operating actuator is prevented from acting on the select actuator and/or the shift actuator which is not in operation by applying a fluid pressure to the inoperative select actuator and/or the shift actuator to fix …

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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 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 1983
GrantedDecember 30, 1986
Term endedDecember 30, 2003
Patent numberCA 1215895 A
Classification (IPC)F15B13/02 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedOct 6, 1983Patent grantedDec 30, 1986Term endedDec 30, 2003

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