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Expired Canadian patentCanada

Modular endless track drive system and methods of making, installing and repairing same

CA 1323064 C · Owner: Edwards, John W. · Inventors: Mcnew, Quinton B.; Harper, Daniel R.; Edwards, John W.

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 modular endless track drive system for use on a track vehicle such as a bulldozer is made up of a number of polymeric drive modules interconnected with polymeric master links. Each drive module includes a plurality of drive members with lateral frictional drive faces for engagement with a drive wheel each master link, having similarly configured drive faces. The drive wheel is provided with drive surfaces shaped to match the shape of the lateral drive faces on the drive modules and master links and/or a sprocket for engaging with additional drive faces on the drive modules and master links. A drive module is made by molding a polymeric multiple drive member structure atop a plurality 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

  • Granted October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1988
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1323064 C
Classification (IPC)B62D55/20 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 9, 1988Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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