Current limiter with electric valves for limiting the short-circuit current in an electric power circuit
CA 2365228 C · Owner: Forschungszentrum Karlsruhe Gmbh · Inventors: Jungst, Klaus-Peter; Kuperman, Grigory
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 current limiter for limiting the overcurrent in power generation systems and transmission systems to a given limit. Said current limiter consists of inductors and controllable electric valves, e.g. , thyristors. Two inductors are connected in series and are bridged by two valves that are connected in series. The valves have opposite forward directions. The common point of the valves and the common point of the inductors are linked by e.g. a controllable voltage source. Circles are produced by an inductor and a valve. A controllable voltage source can be connected in series in relation to the valve in the respective forward direction of the valve and in …
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 January 27, 2000 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2022.
- 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.