Method for operating a device to vary a blade setting angle, and a varying device
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United States of America Patent
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Jan 11, 2011
Grant Date -
Oct 4, 2007
app pub date -
Sep 19, 2005
filing date -
Sep 23, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for operating a device to vary a blade setting angle on a rotor blade of a wind power plant, comprising two variable drives each per rotor blade, a bearing element acting between the rotor blade and rotor hub which has a freely rotatable bearing ring, wherein the method has the following process steps: setting the bearing ring into a permanent rotation by a first drive, and adjusting the setting angle of the rotor blade by a second drive.
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