Improved mechanical strainer for fibrous suspensions
CA 2258467 A1 · Owner: Magaraggia, Flavio · Inventors: Aver, Franco; Magaraggia, Flavio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention realizes an improved mechanical strainer (1 ) for fibroussuspensions including: a rotor (2); a filtering basket (5) substantially coaxialexternally to said rotor (2); an interspace (8) defined between the side surfaces (23; 6') of said rotor (2) and of said filtering basket (5); an outer casing (9)suitable to house said filtering basket (5) and said rotor (2). Inside this outer casing there are: a feeding chamber (10) receiving the fibrous suspension to be treated, a delivery chamber (14) of the "accepted" and a waste chamber (16) of the "waste". The rotor (2) is provided with a plurality of diffusing ducts (18) developing through diverging ways according to the flow direction …
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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
- Filed January 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2021.
- 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.