Heating system disabler
CA 2245930 A1 · Owner: Cantor, Mark A. · Inventors: Polk, Steven A.; Cantor, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for controlling a unit (20) for heating a building having multiple living/working spaces, the heating unit operating by the combustion of a fuel. The method includes sensing the concentration of a gas (10) in at least one of the living/working spaces and comparing the sensed gas , concentration to a selected threshold (2). The method also includes transmitting a control signal when the sensed gas concentration exceeds the selected threshold, receiving the control signal at a remote location and , disabling the heating unit (20) in response to receipt of the control signal (14). The system includes a sensor (24) a comparator, a transmitter and a , heating unit …
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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 February 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2019.
- 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.