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Expired Canadian patentCanada

Automotive constant speed cruise control system

CA 1300719 C · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Tabuchi, Hiroaki; Miyazaki, Akira; Hitotsuya, Masaki

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

An automotive constant speed cruise control system for a vehicle comprises an automatic speed change controller for automatically changing speed in a transmission depending on the throttle valve opening and vehicle speed a constant speed, controller having a constant speed travelling control function for maintaining a target vehicle cruising speed by controlling on the basis or duty ratio of the throttle valve opening according to vehicle speed also having a transmission limiting function for sending out a signal to the automatic speed change controller to prohibiting selection of the maximum speed in the transmission for a specified time when the vehicle speed falls. The transmission …

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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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
  • 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 29, 1986
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300719 C
Classification (IPC)B60K31/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 29, 1986Patent grantedMay 12, 1992Term endedMay 12, 2009

Sources & verification

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