Method of manufacturing wound transformer core
CA 1315078 C · Owner: Daihen Corporation · Inventors: Kokado, Masatake; Hanaoka, Katsumi; Sumida, Nobuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A method for manufacturing rectangular wound cores includes forming at least one developed lamination body by cutting at least one ring-like lamination body. Adhesive is applied to one of the cut ends of each developed lamination body. Lamination blocks are formed each of, which is comprised of a plurality of lamination units shifted in the lengthwise direction by a predetermined distance. The ends of each lamination unit are joined in an overlapped condition by winding each lamination block around a shaping bobbin.
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
- Granted March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.