Electrical machine having cooled laminated stator and rotor cores and windings
CA 2522469 C · Owner: Innomotics Gmbh · Inventors: Pfannschmidt, Bernd; Pittius, Ekkehard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High-power electric machines must be intensively cooled. At the same time it , is necessary to ensure a high level of immunity to impurities. For this purpose, the rotor and stator sheet packs (41 42, 61, 62) are embodied in two , parts thereby making it possible to carry out a two-sided ventilation said , parts being maintained separately in the middle by a ring (5 7). Said ring , (5,7) is provided with ribs (51 52, 71, 72) in such a way that radial flow channels are formed between partial sheet stacks and ensure corresponding flow rate. In another embodiment, monoblock sheet stacks are provided with cooling channel extensions on either side of the sheet stack. Said cooling extensions …
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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 April 1, 2004 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2026.
- 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.