Method and system for evaluating local compactness of a granular material
CA 2417519 A1 · Owner: Antonioni, Silvio · Inventors: Antonioni, Silvio; Merlone Borla, Edoardo; Faraldi, Paolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An evaluation method in which a capacitive sensor is placed in a region of a container, into which a granular material is fed so as to contact the sensor and the, variation in the impedance of the sensor caused by feeding in the material is evaluated. The method is particularly useful for evaluating the compactness of sand in a formwork for making metal castings. The evaluation system includes a sensor defined by plates sensitive to the variation in the dielectric; and a conditioning and control circuit for indicating the variation in the capacitance of the plates or more, generally the total impedance of the system when the, granular material is fed into the container. In one embodiment, …
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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 27, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.