Wind turbine

Details Wind turbine Wind turbine

2005-05-10

2008-12-30

Nguyen, Ninh H (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Motor bodily rotatable with impeller hub or shaft

C416S1700HM

Reexamination Certificate

active

07470111

ABSTRACT:
A wind turbine equipped with a tower, a nacelle rotatably mounted on the tower, a rotor rotatable at the nacelle about a rotor axis of rotation and including one rotor hub and at least one rotor blade which is coupled by a blade bearing to the rotor hub while rotatable about a blade adjustment axis. The blade bearing includes an inner ring firmly affixed to the rotor hub and an outer ring that is fitted with a toothing and that is firmly connected to the rotor blade. The rotor blade is rotatable by a blade adjustment drive including a drive motor actuating a drive pinion meshing with the outer toothing of the outer ring. On the rotor hub's side away from the nacelle, the drive pinion is configured at an angle of 10 to 30° as measured about the blade adjustment axis to a plane subtended by the rotor axis of rotation and the blade adjustment axis, and the drive motor is mounted at a distance from the rotor axis of rotation that is smaller than the distance between the drive pinion and the rotor axis of rotation.

REFERENCES:
patent: 2032682 (1936-03-01), Blanchard
patent: 5249924 (1993-10-01), Brum
patent: 6783326 (2004-08-01), Weitkamp et al.
patent: 7331761 (2008-02-01), Hansen et al.
patent: 2004/0240997 (2004-12-01), Wobben
patent: 10141667 (2003-03-01), None

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