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Expired Canadian patentCanada

Semi-automatic mechanical transmission control and control method

CA 1304475 C · Owner: Dunkley, Michael William · Inventors: Stainton, John E.; Dunkley, Michael William

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A control and control method for a semi-automatic mechanical transmission system (10) is provided for sensing operator request for a direct downshift into an optimum pull-away ratio and for automatically determining and engaging the optimum pull-away ratio.

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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledNovember 27, 1987
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304475 C
Classification (IPC)F16H59/70 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 27, 1987Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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