Skewing of pole laminations of a switched reluctance machine to reduce acoustic noise
CA 2096244 A1 · Owner: General Electric Company · Inventors: Stanley, Marlin Lewis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The laminations (40 50) respectively comprising the rotor and stator poles (116a, 116b, 118a, 118b, 120a 120b, 124a, 124b) of a , switched reluctance machine (SRM) (114) are skewed as they are stacked during machine assembly in order to reduce the tendency of the SRM (114) to flatten and thereby assume an oval shape during machine operation. As a result, the acoustic noise generated by the SRM (114) during machine operation is substantially reduced.
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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 October 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2014.
- 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
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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.