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Expired Canadian patentCanada

Constant velocity coupling and control system therefor

CA 2442323 C · Owner: Thompson, Glenn Alexander · Inventors: Thompson, Glenn Alexander

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 constant velocity coupling 10, 305 which rotabably connects an input shaft 11 to an output shaft 12 by means of a control mechanism or control system 21 309 which, in, particular forms, includes a gimbal arrangement comprised of an inner yoke 22 rotatably connected to an outer yoke 16. The control mechanism including control yoke 21 constrains at least portions of the coupling to lie on or in association with a homokinetic plane 300 of the coupling. In particular forms the control mechanism operates symmetrically about supplementary angle bisector 308.

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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 March 26, 2002 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 2002
GrantedOctober 18, 2011
Term endedMarch 26, 2022
Patent numberCA 2442323 C
Classification (IPC)F16D3/30 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMarch 26, 2002Patent grantedOct 18, 2011Term endedMarch 26, 2022

Sources & verification

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