Rotor blade for a wind turbine
CA 2650752 C · Owner: Wobben, Aloys · Inventors: Wobben, Aloys
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a rotor blade for a wind turbine and to a wind turbine comprising a rotor with rotor blades of this type. The aim of the invention is to prevent the described disadvantages and to guarantee an improved overall performance. To achieve this the invention provides a rotor blade with a drag ratio in particular in the central or main board region of said rotor whose value exceeds 80 % and preferably 90 % of the maximum value of said ratio in the range of ~2° of the optimum pitch of said rotor.
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 February 10, 2005 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2025.
- 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.