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Expired Canadian patentCanada

End face seal assembly

CA 1314063 C · Owner: Livesay, Richard Edward · Inventors: Livesay, Richard Edward; Maust, Blair Allen; Purcell, Robert Joseph

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

18-, Abstract of the Disclosure, End Face Seal Assembly An end face seal assembly is disclosed for use in severe service applications, such as for use in sealing a track joint. The seal assembly includes a rubber load ring, an L-shaped metal seal ring and a polyurethane seal ring. The polyurethane seal ring is mounted in a groove provided in the end face of the track bushing and has a seal lip which dynamically seals against a radial sealing surface of the metal seal ring. The load ring mounts the metal ring in the counterbore of the outer track link and provides the axial force for urging the metal seal ring into axial sealing engagement against the seal lip. The seal assembly eliminates …

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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 March 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 2, 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 25, 1988
GrantedMarch 2, 1993
Term endedMarch 2, 2010
Patent numberCA 1314063 C
Classification (IPC)B62D55/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 25, 1988Patent grantedMarch 2, 1993Term endedMarch 2, 2010

Sources & verification

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