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Expired Canadian patentCanada

End seal for idler roller

CA 1307477 C · Owner: Carney, Edward J. · Inventors: Carney, Edward J.; Uttke, Russell H.C.

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

A multi-roller conveyor includes a plurality of idler rollers journaled for rotation around individual, stationary shafts. Each roller includes, at each of its ends, a metal end plate and an end bearing, received in the end plate for, rotatably supporting the roller relative to the shaft. To protect against the entry of contaminants an end seal assembly, including an inner seal member mounted to the roller, and an outer seal member mounted to the stationary shaft, is provided at each end of the roller. The inner and outer seal members are formed of molded plastic and co-operate with each other, and with the roller end plate, to form a labyrinth-like passageway leading from the end bearing …

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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 September 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.
FiledDecember 21, 1988
GrantedSeptember 15, 1992
Term endedSeptember 15, 2009
Patent numberCA 1307477 C
Classification (IPC)B65G39/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 21, 1988Patent grantedSep 15, 1992Term endedSep 15, 2009

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