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Expired Canadian patentCanada

Fabric cleaning

CA 1310500 C · Owner: Valmet-Dominion Inc. · Inventors: Malashenko, Alexander

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

The fabric cleaning system for cleaning a fabric such as the wire on a paper machine includes a cleaning station through which the fabric continuously passes. In the station cleaning fluid is directed onto a surface of the fabric, contacts the fabric to remove at least some of the debris and is collected in a collecting chamber. The dirty fluid is cleaned of debris in a cleaner such as a screen and is then returned and re-used to clean the fabric. Preferably the cleaning fluid is applied to the fabric through slots with their outlet openings adjacent the fabric and formed by tapered passages that diminish in height in the direction of the travel of the fabric. Preferably the slots extend …

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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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.
FiledNovember 24, 1988
GrantedNovember 24, 1992
Term endedNovember 24, 2009
Patent numberCA 1310500 C
Classification (IPC)B08B3/04

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 24, 1988Patent grantedNov 24, 1992Term endedNov 24, 2009

Sources & verification

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