Patent ID: 9587623
Date: 2017-03-07
CPC Classifications: F03D,F05B,Y02E

Claim:
1. A wind turbine comprising: a tower; a nacelle mounted to the top of the tower; a rotor mounted to the nacelle, the rotor comprising two or more blades mounted to a central hub, the hub supporting two or more annular pitch bearings associated respectively with the two or more blades, each pitch bearing defining a bearing plane inclined at a first angle with respect to a horizontal plane when the respective blade is oriented in a downwardly direction in alignment with the tower, wherein: each pitch bearing is spanned by a hub plate; and a work platform integral with or mounted to the hub plate lies generally in a plane at a second angle to the horizontal plane when the respective blade is oriented in a downwardly direction in alignment with the tower, which second angle is less than the first angle.