Sorter for paper pulp suspensions
CA 1268734 C · Owner: Meinecke, Albrecht · Inventors: Egelhof, Dieter; Schmid, Hans-Rainer; Meinecke, Albrecht
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 sorter comprising a screen in the form of a stationary, rotationally symmetrical wire cage in the, peripheral vicinity of which screening vanes are pivoted an inlet for, feeding a suspension into the cage a pulp chamber surrounding the cage, and a pulp outlet from the pulp chamber. The invention is characterized by an annular damping chamber, which preferably surrounds the pulp chamber and which is in direct communication with said pump chamber. The damping chamber has an area having a cushion of gas the pressure of, which can preferably be controlled. By this arrangement pressure pulsations, which are caused by the screening vanes pivoted along the wire …
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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 8, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 2007.
- 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.