Method and apparatus for grading fiber suspension
CA 1318282 C · Owner: Vikio, Pentti · Inventors: Vikio, Pentti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus for grading fiber suspension. The invention especially relates to so called cyclone separators by means of which, particles heavier than the fibers such as sand and metal, particles, are separated from the fiber suspension in the pulp and paper industry. Prior art apparatus problems include the wearing effect on the conical part caused by the heavier particles remaining rotating in the conical part and the acceptable fraction being allowed to the reject, which fraction the apparatuses of the prior art technique have not been able to return to the pulp circulation during the same separation stage and which thus fills the reject section, …
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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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 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.