Device for adjusting a rotor blade of a wind energy turbine

Details Device for adjusting a rotor blade of a wind energy turbine Device for adjusting a rotor blade of a wind energy turbine

2007-08-28

2007-08-28

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Having pitch lock or adjustable stop

C416S155000, C416S159000

Reexamination Certificate

active

10512604

ABSTRACT:
The device for adjusting a rotor blade of a wind energy turbine is provided with a driving device (12) for driving an adjusting element (24) for selectably rotating the rotor blade (26) in both directions about its longitudinal axis (28), an energy storage unit (30) and a free-running means (32) adapted to be selectively activated, said free-running means (32), in its activated state, allowing rotation of the rotor blade (26) by means of energy stored in the energy storage unit (30) only in one of the two directions up to a desired rotational position.

REFERENCES:
patent: 4462753 (1984-07-01), Harner et al.
patent: 6428274 (2002-08-01), Hehenberger
patent: 6609889 (2003-08-01), Vilsboll
patent: 019720025 (1997-10-01), None

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