Boiler system ignition sequence detector and associated methods of protecting boiler systems
CA 2374197 A1 · Owner: Keegan, Patrick J. · Inventors: Keegan, Patrick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An event detector and associated methods of protecting systems provide convenient and economical safety features. In a described embodiment, an ignition sequence detector for a boiler system has a microprocessor which is programmed so that an ignition control module of the boiler system is deprived of primary power when an improper sequence of events occurs. The ignition sequence detector includes multiple event detectors interconnected to the microprocessor and is configured so that, it is usable in high RFI environments.
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 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2020.
- 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.