High efficiency alternating and direct current electrostatic motor
CA 2284188 C · Owner: Gendron, Daniel · Inventors: Gendron, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an electrostatic motor wherein the poles of the stator have a substantial geometry in the shape of fixed "combpoles", adapted to be crossed by moving "comb-poles" of the rotor. The fixed combpoles , are equally spaced apart, radially and inwardly extending from an electrically insulating hollowed outer cylinder forming the stator while the , moving, comb-poles are equally spaced apart radially and outwardly extending from an electrically insulating inner cylinder forming the rotor and located inside the stator. Having all those combs essentially facing each other allows for taking full advantage (100% in theory) of the electric force vector created between …
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 15, 1999 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2021.
- 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.