Dynamoelectric machines having energy-efficient stator constructions and method
CA 2108151 A1 · Owner: Hisey, Bradner L. · Inventors: Hisey, Bradner L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a radial gap dynamoelectric machine a composite stator ferromagnetic structure (18) having reduced losses is formed using fanfolded thin section metallic glass or electrical steel strips edge (51) wound to form a ring-like magnetic structure (32) surrounding separate stator tooth assemblies (34) formed of traditional or thin-section sheet or powdered ferromagnetic materials. Alternative structures are described.
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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 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 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
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.