A wind turbine blade and a pitch controlled wind turbine
CA 2654772 C · Owner: Vestas Wind Systems A/S · Inventors: Haag, Michael Drachmann
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 wind turbine blade (5) comprising one or more turbulence generating strips (10) where the strips (10) are placed on a surface of the blade (5). The blade (5) is characterized in that at least one joint area (22) of the turbulence generating strips (10) and the surface of the blade (5) are completely or partially covered by sealing means (23). The invention further relates to a pitch controlled wind turbine (1) comprising at least two pitch controlled wind turbine blades (5) and pitch controlling means for pitching the blades (5). The pitch controlled wind turbine (1) is characterized in that the blades (5) comprises one or more turbulence generating strips (10) …
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 June 9, 2006 and granted September 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 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.