Open stator axial flux electric motor
CA 2175387 C · Owner: Helwig, Andreas · Inventors: Helwig, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An open stator axial flux electric motor is disclosed. The motor has an open stator having two spaced insulating supports (60 61), with a slot (62, 63) extending from a periphery of each of the supports (60 61) to an inner location. A plurality of poles (20-36) extend between the supports(60,61)and are secured to them and the stator has either distributed winding or salient phase pole windings associated with at least some of the poles with an opening between adjacent poles in the regions of the slots (60 63) in the supports (60, 61). The, motor has a rotor (64) with a shaft (69) extending through the slots (62 63) and at right angles to the supports (60 61). Two spaced rotor, discs are …
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 September 7, 1995 and granted November 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2017.
- 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.