Device for separating suspensions, preferably containing fibre pulp
CA 2086938 A1 · Owner: Celleco Hedemora Ab · Inventors: Atkeison, Charles; Fjallstrom, Roland; Frykhult, Rune
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A separation device for suspensions comprises a housing (1) a, filter body (3) with a wall of filter material situated in the housing, spray means (14) adapted to spray jets of a suspension to be separated directly onto one side of the wall of filter material and means (4, 6) for displacing the filter body relative to the spray means. According to the invention the filter body forms a substantially circular cylindrical drum (3) with a vertical centre axis, the circumferential wall of the drum comprises said wall of filter material. Further, said displacement means (4 6) is, adapted to turn said cylindrical drum about said vertical centre axis during operation.
Read the whole patent
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
- Filed July 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2013.
- 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.