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Expired Canadian patentCanada

Roller

CA 1283564 C · Owner: Kubik, Klaus · Inventors: Kubik, Klaus; Kusters, Karl-Heinz

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

The roller comprises a hollow roller and a fixed crosshead. A bearing housing is provided, in which the hollow roller engages with an axial extension that is of reduced diameter. The bearing is installed between the outer side of the extension and the inner surface of the bearing housing and has its own lubri-, cant feed and drain lines. The bearing housing encircles the end of the crosshead outside the bearing without any clearance on a, supporting length. The design makes it possible to separate the pressure and thermal transfer liquid in the hollow roller from the lubricating liquid for the bearing, and increase the working temperature of the pressure and thermal transfer liquid.

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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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 12, 1987
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283564 C
Classification (IPC)F16C13/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 12, 1987Patent grantedApril 30, 1991Term endedApril 30, 2008

Sources & verification

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