Method and apparatus for manufacturing packets composed of sheet metal lamellae for magnetic cores
CA 2303898 C · Owner: Vacuumschmelze Gmbh · Inventors: Emmerich, Kurt; Hein, Herbert; Hangg, Alois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention offers a manufacturing method that also makes sheet metal packets in what is referred to as the punch-packeting technology available, that comprise a round or oval iron cross section. Lamellae are thereby punched from, a tape and are provided with depressions at one side and with elevations at the other, side that coincide with the depressions and lie opposite them whereby the , elevations, in the form of at least two circular nipples are pressed into the depressions upon, assembly of each packet. In one lamella per packet this serving as separating , lamella, cylindrical holes are punched instead of the depressions the nipples of the, neighboring lamella engaging …
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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 September 14, 1998 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 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.