Device and method for regulating flow particulate material, especially small flows of fine powder
CA 2381463 A1 · Owner: Mcgregor, Gavin · Inventors: Mcgregor, Gavin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for regulating the flow of particulate material comprising a first inlet conduit having an outlet end, and a second outlet conduit aligned with , the, first conduit and having an inlet end sufficiently close to the outlet end of the, first conduit as to receive at least a portion of a particulate material flow exiting, the first conduit. The lateral relationship of the adjacent ends of the two conduits is adjusted to change the area of the inlet end exposed to material leaving the first conduit to adjust the flow of particulate material through the, second conduit; material which does not enter the second conduit is recycled. The device is particularly useful for regulating the …
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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 April 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2024.
- 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.