Method and arrangement for providing power operation of switchgear apparatus
CA 2003116 C · Owner: Fanta, Thomas O. · Inventors: Chabala, Leonard V.; Fanta, Thomas O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and arrangement are provided for power operation of manually operable switchgear. The capability for power operation may be provided either during manufacture or as a retrofit to installed switchgear. The apparatus includes a switch-operator unit which is attached to the switchgear. In a preferred embodiment the apparatus includes a, device for providing power to a rechargeable power supply of the switchoperator unit from the energized portions of the switchgear; the power-providing device being efficiently installed in either a field retrofit operation to installed switchgear or during manufacture of the switchgear. The apparatus also includes provisions for providing operating …
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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 16, 1989 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2011.
- 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
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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.