Electric motor with external rotor
CA 2493381 A1 · Owner: Wolters, Laurens · Inventors: Wolters, Laurens
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric motor comprises a shaft to which a stator is fixedly mounted and a rotor is rotatably mounted. The shaft is stiffened by a plurality of plates mounted to the shaft and held in compression thereon. The position of the rotor relative to the shaft and the speed of rotation of the rotor relative to the shaft are determined by a highly accurate opto-reflective sensor assembly. The shaft is mounted to a structural support by way of a mounting block that dampens virtually all vibrations generated by the motor for quiet operation. A rotor extension provides adaptability for operation with wider belts e. g. a treadmill.
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 27, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2024.
- 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.