Transformer or reactor
CA 1210102 A · Owner: Asea Aktiebolag · Inventors: Widell, Marja; Bjorklund, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transformer or reactor has at least one sheet winding built up of several turns, wound on top of each other of, a sheet comprising a metallic foil and at least two polymer films. The polymer films comprise, embedded therein homogene-, ously distributed grains of an inorganic filler and both sides, of the polymer films are provided with irregular elevations so that spaces exist between confronting surfaces of metal foil and polymer film and confronting surfaces of polymer films. The spaces communicate with the space outside the end surfaces of the sheet winding, thus obtaining a complete impregnation of the sheet winding with insulating fluid or insulating gas The filler reduces the risk …
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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
- Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.