Fine particle flowmeter
CA 2391307 C · Owner: Brandt, Robert O. Jr. · Inventors: Brandt, Robert O. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow meter (100) for determining the flow rate or mass of a moving stream of fine particles (P) comprises a guide (102) for guiding the material along a predetermined path having an entry end (106) and an exit end (108). A transducer (200) is operatively associated with one end of the guide and includes a mechanical column connected between a load cell and the exit end of the guide. The load cell produces an electrical output signal proportional to the flowe rate of the material on the guide. A vibrator for vibrating the guide is provided and serves to keep the flow stream moving and wherein the plane of vibration is perpendicular to the plane of measurement thus , eliminating …
Read the whole patent
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 November 10, 2000 and granted June 7, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 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.