Improved apparatus for sensing fluid flow and associated load control circuit
CA 2292848 A1 · Owner: Agf Manufacturing, Inc. · Inventors: Mchugh, George J.; Doner, Thomas O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit and apparatus for magnetically sensing fluid flow and applying voltage, to a load. A valve disposed within a conduit is provided with a magnetic shield. A, magnet is located on one side of the magnetic shield while a sensor associated with the, valve is located on the opposite side of the magnetic shield. The valve and , hence the, magnetic shield, moves to permit fluid flow. When the magnetic shield moves due to, fluid flow, the magnet activates the sensor. A load control circuit includes a supply, terminal for receiving a supply voltage and a detector which detects a condition requiring, the operation of a load. The detector causes a threshold voltage to be generated from …
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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 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2021.
- 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
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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.