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Expired Canadian patentCanada

Mechanical drive for rotatable mantle roll mounted onto a stationary axle, especially for a deflection-compensated roll mantle of a paper machine

CA 1136901 A · Owner: Hunt & Moscrop (Paper Machinery) Ltd. · Inventors: Matikainen, Martti

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

The invention relates to a drive for a rotatable mantle roll mounted onto a stationary axle. The mantle is driven by one or more driving gears which are again driven by one or more shafts journalled in a supporting frame located around the stationary-axle end. The driving gear or gears drive an internally toothed gear ring connected to the roll mantle. The improvement lies in that the supporting frame which is supported by rolling or sliding elements is placed inside a shell connected to the mantle or inside the mantle as a stationary unit with its different elements. The supporting frame is coupled by special elements not to rotate so that the said location with the mantle is possible.

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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 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 27, 1979
GrantedDecember 7, 1982
Term endedDecember 7, 1999
Patent numberCA 1136901 A
Classification (IPC)F16H1/06 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 27, 1979Patent grantedDec 7, 1982Term endedDec 7, 1999

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