Rotor cooling apparatus
CA 2416485 A1 · Owner: Frazzini, Jeff · Inventors: Lewis, Kevin R.; Frazzini, Jeff; Lutz, Jon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A brushless permanent magnet electric motor or generator having a hollow rotor, is, provided with apertures in ends of the rotor. The apertures allow air to flow through the, center of the hollow rotor and remove heat from the rotor. Vanes or blades can be fixed to, the shaft within the rotor or fixed to ends of the rotor to force air through an interior of the, hollow rotor. Ends of the rotor can be shaped to form fan blades that draw air through the, interior of the rotor. Air flowing through the rotor can be recirculated by flowing back, through passageways formed between the stator and the motor/generator casing through, passages through the stator, and/or back through an air gap …
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 January 15, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2025.
- 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.