Reluctance motor having h-shaped stator cores
CA 1284518 C · Owner: Polestar Magnetronics Inc. · Inventors: Kaszmann, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric motor operating on the reluctance principle employs spaced rotor discs presenting rings of inwardly facing poles of alternating polarity typically, by means of permanent magnets and an annular stator, between the discs consisting of a ring of H shaped cores with the stems of the H's extending peripherally. Two sets of windings on these cores are energized alternately so as to provide alternating polarization of pole pieces presented by the cores to the rotor discs with a timing, such as to produce continuous rotation at a controlled rate, of the discs as their magnets seek a minimum reluctance position.
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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 May 28, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2008.
- 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.