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Expired Canadian patentCanada

Self-aligning self-engaging hopper drive

CA 2522426 C · Owner: Pickrell, Jason T. · Inventors: Pickrell, Jason T.

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

Disclosed is a self-aligning auger drive assembly. The assembly includes a hopper with an auger supported therein. A shaft is connected to and extends from the auger externally from the hopper. A coupling is associated with the shaft and is operatively associated with a biasing device which creates an engaging force to promote engagement of the coupling with a motor assembly driver. A portion of the coupling defines a recess which receives at least a portion of the driver as the driver is rotated.

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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 October 5, 2005 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 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.
FiledOctober 5, 2005
GrantedDecember 18, 2012
Term endedOctober 5, 2025
Patent numberCA 2522426 C
Classification (IPC)B01F7/08 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedOct 5, 2005Patent grantedDec 18, 2012Term endedOct 5, 2025

Sources & verification

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