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Expired Canadian patentCanada

Complementary regenerative torque system and method of controlling same

CA 2591879 C · Owner: Johnston, Matthew F. · Inventors: Johnston, Matthew F.; Dubois, Martin J.; Viergever, Thomas Patrick

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Abstract From the Canadian patent

The present invention is directed to a complementary regenerative torque system for a vehicle including an engine with an accelerator pedal position sensor. The regenerative torque system selectively stores and supplies energy to the drive train of the vehicle to provide on demand complementary torque. The regenerative torque system may be hydraulic or electric in nature and may be disposed upstream or downstream of the transmission relative to the engine. A regenerative torque control module is disposed between the accelerator pedal position sensor and the engine control module and intercepts the accelerator pedal position signal and modifies it in response to the mode of …

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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

  • Filed December 12, 2005 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 12, 2005
GrantedAugust 13, 2013
Term endedDecember 12, 2025
Patent numberCA 2591879 C
Classification (IPC)B60W30/18 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedDec 12, 2005Patent grantedAug 13, 2013Term endedDec 12, 2025

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