Three-pole, gas-insulated switch arrangement
CA 2020248 C · Owner: Hux, Guido · Inventors: Hux, Guido
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three-pole, gas-insulated switch comprises inner and outer poles. A metallic encapsulation means is supported on a frame. Interrupter elements are arranged in respective pole housings and supported on encapsulation means via insulators. The pole housings are arranged with mutually parallel longitudinal axes. Each housing is connected to two bushings. The bushings have longitudinal axes in an axial plane of the respective pole housing. The interrupter elements are supported on the pole housings, the respective cover and the respective mechanism housing are fastened to the respective pole housing each by means of a circular arrangement of evenly distributed screw couplings. The pole …
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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 June 29, 1990 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2012.
- 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.