Apparatus for detecting arc fault
CA 2445690 A1 · Owner: Moon, Je-Chun · Inventors: Ko, Joung-Myoung; Kim, Cheon-Youn; Kim, Dong-Seb
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for detecting an arc fault. The apparatus comprises a current detector, for detecting the amount of change of current flowing on the wire and generating a signal, proportional to the amount of change; a signal transformer for passing a high frequency, component of the signal outputted from the current detector and limiting a , level of the, signal not to exceed a fixed signal level; a first level limit amplifier for amplifying a signal, outputted from the signal transformer so as to limit the level of the outputted signal; a, signal level detector for determining whether a input signal exceeds a fixed first voltage, and generating a detection signal; a pulse generator for …
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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 October 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2025.
- 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.