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Expired Canadian patentCanada

Automated sucker rod cleaning apparatus

CA 1311892 C · Owner: J. M. Huber Corporation · Inventors: Hinds, Robert B.; Dowell, James S.; Hutchinson, Charley B. Jr.

CIPO record

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

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Abstract From the Canadian patent

An automated apparatus for molding rod guides directly onto oilfield sucker rods including an apparatus for cleaning a short pre-determined section of the rod prior to the rod receiving a molded rod guide. The rod cleaning apparatus comprises a substantially linear member secured to a frame which reciprocates a pre-selected stroke distance. The rod to be cleaned is rotated and a plurality of brush assemblies mounted on the linear member engage the rotating rod at pre-selected points to clean a pre-determined length of the rod in preparation for receiving a rod guide. This automated system prepares rods for molding at a much faster rate without the requirement of large volumes of compressed …

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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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 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.
FiledMay 25, 1989
GrantedDecember 29, 1992
Term endedDecember 29, 2009
Patent numberCA 1311892 C
Classification (IPC)B29C45/14 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMay 25, 1989Patent grantedDec 29, 1992Term endedDec 29, 2009

Sources & verification

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