A cable for electrical windings, and such a winding
CA 2276348 A1 · Owner: Carstensen, Peter · Inventors: Holmberg, Par; Carstensen, Peter; Leijon, Mats
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electric cable, designed for an electric winding such as a transformer , or reactor winding an electrically conducting core (2) is arranged to be in contact with an inner, first semiconducting layer (4) surrounding the core. A first insulating layer (6) is arranged on the outside of the first semiconducting layer surrounding it. An outer second semiconducting layer (8) , is arranged on the outside of the first insulating layer surrounding it. Means (16, 18) are also provided on the outside of the second semiconducting layer to earth the cable for alternating voltage and/or impulse voltage continually along at least a substantial part of its length.
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 February 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2020.
- 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.