Motor stator heat spike
CA 2020079 A1 · Owner: Kollmorgen Corporation · Inventors: Overton, Bernard P.; Overton, Bernard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric motor includes a heat spike within the stator slots which extends radially inward from the stator back iron into the slot between the stator teeth. The heat spike placed within the stator slots, reduces the heat path length and increases the heat transfer areas to the iron. Together these allow the winding heat to dissipate quicker and thereby, reduce the hotspot temperature and improve the motor's load rating.
Read the whole patent
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 June 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2012.
- 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.