Method and apparatus for thickening fiber suspension
CA 1313324 C · Owner: Henricson, Kaj · Inventors: Henricson, Kaj
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for thickening fiber suspension The present invention relates to a method and an apparatus for thickening of fiber suspension. In particular the, invention relates to removal of water from pulp which is caused to thicken in a closed space equipped with a fine-perforated or fine-slotted screen surface. The problem with the prior art devices has been their complex structure or in simpler, solutions, their great susceptibility to clogging. These problems have been found out to be overcome through dimensioning of perforations in the screen surfaces (28 30;, 38, 40) of the thickener and the flow channels (33; 37) between the filtering surfaces (28, 30; 38, 40) in such a way …
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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 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.