The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2016
Filed:
Jun. 15, 2012
Applicants:
Michael Friedrich, Silkeborg, DK;
Peter Grabau, Kolding, DK;
Inventors:
Michael Friedrich, Silkeborg, DK;
Peter Grabau, Kolding, DK;
Assignee:
Envision Energy (Denmark) ApS, Silkeborg, DK;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 7/02 (2006.01); F03D 1/06 (2006.01);
U.S. Cl.
CPC ...
F03D 7/0228 (2013.01); F03D 1/0641 (2013.01); F05B 2240/301 (2013.01); F05B 2240/302 (2013.01); Y02E 10/721 (2013.01); Y02E 10/723 (2013.01);
Abstract
A blade for a partial pitch wind turbine is described, wherein the blade has a truncated aerodynamic profile provided at the pitch junction of the blade. The truncated trailing edge acts to prevent the formation of a trailing edge gap during pitching between the trailing edges of the inner and outer blade sections of a partial pitch blade, thereby reducing the negative impact of air leakage, etc., when pitching a partial pitch blade.