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Expired Canadian patentCanada

Device for cutting off an edge strip and for guiding the edge strip in connection with the threading of a paper or board web

CA 1280394 C · Owner: Tamrock Oy · Inventors: Laine, Paavo

CIPO record

Overview

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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 device for cutting off and guiding an edge strip from one part of a paper or board machine to another in connection with the threading of a paper or board web. The device comprises air jet nozzles for guiding the edge strip, and a threading plate which is provided with cutting means for cutting off the edge strip. In order to provide a device reliable in operation, the cutting means comprise at least one blade member which is arranged to be displaced during the cutting of the edge strip in a plane substantially parallel to the plane of the threading plate from the front side of the threading plate towards the front edge thereof and to cut off the edge strip on the …

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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
FiledApril 10, 1987
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280394 C
Classification (IPC)B26D7/18 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 10, 1987Patent grantedFeb 19, 1991Term endedFeb 19, 2008

Sources & verification

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