System and method for sensor control of the fuel-air ratio in a burner
CA 2721197 C · Owner: New Power Concepts Llc · Inventors: Schnellinger, Andrew; Kamen, Dean L.; Langenfeld, Christopher C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for controlling the fuel-air ratio of a burner having a blower responsive to a blower drive signal for injecting air into the burner. The method is based at least on the concentration of a gas in an exhaust gas product of a combustion chamber of the burner and includes measuring the gas concentration in the exhaust gas product deriving a gas concentration signal from the measured gas concentration determining the fuel- air ratio from the gas concentration signal and the sign of the derivative of the gas concentration signal with respect to the blower drive signal and controlling the fuel-air ratio by adjusting the air flow rate into the burner. The burner may be for example, in a …
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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 May 10, 2002 and granted January 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.