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Expired Canadian patentCanada

Intermediate vacuum roll for dryer

CA 1304934 C · Owner: Beloit Corporation · Inventors: Wedel, Gregory L.

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

A single tier dryer section apparatus is disclosed for drying a web extending through a paper machine. The apparatus includes a first dryer and a dryer felt extending around the first dryer such that the web is disposed between the felt and the first dryer for drying the web. A vacuum transfer roll is disposed downstream relative to the first dryer such that the web and felt extend contiguously from the first dryer to and around the transfer roll so that the felt is disposed between the web and the roll during transit of the web and felt around the roll. A second dryer is disposed downstream relative to the transfer roll such that the web and the felt extend contiguously from the transfer …

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 1989
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1304934 C
Classification (IPC)F26B5/04 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedAug 4, 1989Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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