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Expired Canadian patentCanada

Press section and frame structure for a paper machine

CA 1329030 C · Owner: Autio, Markku · Inventors: Autio, Markku

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

Press section for a paper machine and a frame construction for the same which comprises a front frame and a rear frame. Press rolls are mounted on the front and rear frames and form a press roll combination in which press fabric is passed through nips formed thereby. An at least partially open space is situated between the front and rear frames which are not directly connected to one another and above the press roll combination, through which at least most of the press rolls can be replaced. This space also facilitates replacement of upper press fabric. A suction roll is mounted in conjunction with a rear side of the front frame while a hollow-faced, press roll is mounted in conjunction …

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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 May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2011.
  • 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 14, 1988
GrantedMay 3, 1994
Term endedMay 3, 2011
Patent numberCA 1329030 C
Classification (IPC)D21F3/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedApril 14, 1988Patent grantedMay 3, 1994Term endedMay 3, 2011

Sources & verification

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