Vertical axis wind turbine
CA 2433905 C · Owner: Sia "Genuine Wind Corporation" · Inventors: Nikitins, Leonids; Stecurins, Mihails; Scerbina, Aleksandrs
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to wind power engineering namely to rotary wind motors , which may be used in wind electrical generators or equipments for conversion of wind energy into electrical energy. An object of the present invention is to increase efficiency, power of wind motor and to improve starting acceleration of the rotor. Wind motor comprises rotor (1) with power elements which are realized in the form of two symmetrically arranged blocks (2) and (3) of aerodynamic cascades whereinto each block advantageously consists of four blades 4 realized in the form of a turbine-type configuration of blades. Blocks (2) and (3) of aerodynamic cascade are mounted on central vertical shaft …
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 November 14, 2001 and granted February 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2023.
- 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.