Measuring system for enclosed high-voltage switchgear
CA 2212167 C · Owner: Siemens Aktiengesellschaft · Inventors: Achatz, Norbert; Gorablenkow, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
57) Abstract, The in on concerns a measuring system for enclosed highvoltage switchgear having at least two single-phase encapsulated poles (1, 2, 3) with dielectric dielectric interference sensors (5 6, 7) and with a detector, device (4) connected to the sensors in order to emit a signal in the event of interference. The measuring system comprises a time comparator (8) which blocks the emission of a signal if the time difference between two interference signals from sensors (5, 6 7) of different phases falls short, of a given time interval which is in particular adjustable.
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 24, 1996 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2018.
- 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.