WIND TURBINE ROTOR
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Feb 5, 2013
filing date -
Feb 6, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Wind turbine rotor comprising a hub (10), blades and at least one pitch system for rotating a blade along its longitudinal axis, the pitch system comprising a motor, a drive pinion, an annular gear arranged to mesh with the drive pinion and a pitch bearing that comprises an outer bearing ring, an inner bearing ring and, between these two bearing rings, one or more rows of rolling elements allowing both bearing rings to rotate relative to each other. One of the hub and blade is connected to the inner bearing ring and the other of the hub and blade is connected to the outer bearing ring, and wherein a reinforcing disc (24) is axially fixed to the bearing ring to which the blade is connected at a side facing the hub, the disc being fixed to the bearing ring by the same fasteners connecting the blade to the bearing.
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