Circuit breaker for detecting an excessive voltage and tripping responsive thereto
CA 2411238 C · Owner: Eaton Intelligent Power Limited · Inventors: Natili, Thomas Edward; Elms, Robert Tracy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit breaker includes a line terminal adapted to receive a line voltage having a nominal voltage value and an excessive voltage value a load terminal, one or more neutral terminals and separable contacts electrically connected between the line and load terminals. An operating mechanism opens and closes the separable contacts. A trip circuit cooperates with the operating mechanism to trip open the separable contacts. The trip circuit includes a solenoid having a trip coil with a threshold voltage for energization a circuit adapted to detect an arc fault or ground fault trip condition and to responsively energize the trip coil with the line voltage and a MOV adapted to detect an …
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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 November 6, 2002 and granted November 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.
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.