Fault interrupter using microcontroller for fault sensing and automatic self-testing
CA 2363743 C · Owner: Mcdonald, Thomas M. · Inventors: Batko, Thomas J.; Ellison, David F.; Baldwin, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fault interrupter having a microcontroller is provided to detect actual faults. The , fault interrupter initiates a periodic self-test and provides external notification to the user , upon successful or unsuccessful completion of the test. The fault interrupter generates the , test signal at a selected time to substantially coincide with the zerocrossing of the AC , power source. A manual test can also be performed using a manual test switch provided , as a direct input to the microcontroller.
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 26, 2001 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2023.
- 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.