Device and method for protection against overcurrents in an electrical energy distribution cabinet
CA 2435367 C · Owner: Foch, Etienne · Inventors: Foch, Etienne; Vergnat, Sebastien
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for protection against overcurrents in an electrical energy distribution cabinet which receives electrical energy supplied by at least one generator and which distributes this energy to at least two loads which comprises: - switching means (20) - means (23; C) for calculating the absolute value of the difference between at least one current entering the said cabinet and at least one corresponding current leaving the said cabinet for at least one harmonic of these currents - comparison means (24) which control the opening of the switching means (20) if this absolute value is greater than a predetermined threshold (S).
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 July 16, 2003 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 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
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.