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Expired Canadian patentCanada

Arrangement in cylinder dryer

CA 1194691 A · Owner: Flakt Ab · Inventors: Karlsson, Ingemar; Andersson, Karl-Hugo; Petersson, Rolf

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 an arrangement in cylinder drying intended for, incorporation in a paper machine and including a plurality of heated cylinders (l) arranged substantially parallel in two rows about which the paper web (2), is taken serpentine during drying whereat it is carried by an endless porous fourdrinier wire (3) which presses the web against the cylinder surfaces in one row of cylinders and lies between the paper web and the cylinders in the other row. For preventing the web from lifting from the wire as a result of pressure differences on either side thereof, there are blowing boxes (11,12) arranged for blowing out air in at least some of the pockets (4,5) situated on …

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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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
  • 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 29, 1983
GrantedOctober 8, 1985
Term endedOctober 8, 2002
Patent numberCA 1194691 A
Classification (IPC)F26B1/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 29, 1983Patent grantedOct 8, 1985Term endedOct 8, 2002

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