Dosing control for helical dosing equipment
CA 2365119 C · Owner: Ludescher, Stefan · Inventors: Ludescher, Stefan
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 device for the control of dosing of a time dependent mass flow ~(t) for a helical dosing equipment (1) with a weighing machine (9) and a method of operation of such a device. The device includes modulation detector (31), with which the periodic deviation of the mass flow ~(t) from a target value can be analysed. The modulation detector (31) is connected to a speed modulator (32), with which the rotational speed f of the extraction helix (4) can be suitably phase shift modulated according to the curve shape derived by the modulation detector (31) whereby , the deviations of the mass flow ~(t) are reduced to the unavoidable random deviations and …
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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 December 11, 2000 and granted July 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2022.
- 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.