Permanent magnet dynamo electric machine with a non-conducting stator substrate
CA 1309450 C · Owner: Clark, Peter Bruce · Inventors: Clark, Peter Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A permanent magnet rotary dynamo electric machine such ad a high speed three phase brushless motor has at least one stator and at least one rotor spaced apart from one another by a cylindrical gap therebetween. A plurality of permanent magnetic poles are provided by a plurality of rare earth magnets positioned side by side on the inside of a cup shaped rotor and oriented parallel to the rotor axis. The stator has a plurality of wound poles of shallow depth which are wound on or close to the surface of a substrate of low magnetic permeability (less than 20 times that of air). The wound poles are positioned adjacent the cylindrical gap so as to intersect the magnetic flux paths between …
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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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
- 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.