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:
Oct. 07, 2014
Filed:
Nov. 19, 2007
Kentaro Hayashi, Nagasaki, JP;
Hiroshi Nishino, Nagasaki, JP;
Hiroyuki Hosoya, Nagasaki, JP;
Atsushi Matsuo, Nagasaki, JP;
Kai Karikomi, Nagasaki, JP;
Kentaro Hayashi, Nagasaki, JP;
Hiroshi Nishino, Nagasaki, JP;
Hiroyuki Hosoya, Nagasaki, JP;
Atsushi Matsuo, Nagasaki, JP;
Kai Karikomi, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd, Tokyo, JP;
Abstract
Provided are a wind turbine blade that can reduce the thickness of a turbulent-flow boundary layer generated on the blade surface of a blade tip portion to prevent noise generated at a trailing edge portion effectively, as well as a wind power generator using the same. Provided is a wind turbine blade, which is a wind turbine blade having an airfoil shape in cross section, wherein an angle-of-attack decreasing portion that decreases an angle of attack during rotation at at least a predetermined rotational speed is provided over a predetermined range from a blade tip to a blade root side.