Vertical axis wind turbines
CA 2608425 C · Owner: Maksimov, Vasili · Inventors: Grahov, Jurij Vasiljevich; Krivospitski, Vladimir; Krivcov, Vladimir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vertical axis wind turbine (1) is described. The wind turbine (1) can include a top ring (84), a middle ring (82) and a lower ring (84) wherein a , plurality of vertical airfoils (81) are disposed between the rings. For example, three vertical airfoils (81) can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils (81) can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils (81) the rings (84 82) begin to spin. By , connecting the rings (84 82) to a center pole (105) which spins an alternator (90), electricity can be generated from wind.
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 May 15, 2006 and granted August 26, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.