Tmp refiner production rate measurement
CA 2347259 A1 · Owner: Harris, Gary · Inventors: Harris, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention applies to the pulp and paper industry specifically to the , measurement of refiner production rate in Thermomechanical pulp (TMP) mills. TMP refiners are fed by screw feeders, for, which the rate of material delivery is given on a volumetric basis (i.e. m3/min of wood chips). However, TMP plants are controlled on the basis of mass production rate (i.e. kg/min of dry wood). There is currently no direct way to measure the mass production rate of TMP refiners. This, invention will enable such a measurement using existing sensor technology arranged in a novel, configuration. The invention uses two TMP refiner blowline consistency sensors and a liquid flow, meter. The first …
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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 May 11, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2023.
- 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.