Control system for an air operated diaphragm pump
CA 3038207 C · Owner: Proportionair, Inc. · Inventors: Reed, David A.; Hogue, Timothy D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An AOD pump includes first and second diaphragm chambers each diaphragm chamber including a diaphragm the diaphragms coupled together; first and second sensors configured to detect end-of-stroke right and end-of-stroke left positions of the diaphragms and to output signals indicative thereof; a first valve moveable between first and second positions the first position configured to supply air to the first diaphragm chamber and the second position configured to supply air to the second diaphragm chamber; a second valve moveable between an open position and a closed position the open position configured to connect an air supply to the first valve and the closed position configured to close …
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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 November 17, 2005 and granted October 12, 2021. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.