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US 8,403,641 B2Granted
Wind turbine blade tip brake apparatus and method
OwnerPaul Lewis Gayinventor
Life of this patent
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Abstract
The invention relates to a wind turbine blade tip and actuator assembly and method for controlling the speed of a wind turbine rotor blade. The invention consists of a moveable and turnable blade tip, an actuator assembly for turning the blade tip, control rods, cables and springs for controlling the blade tip, a magnet assembly for holding the blade tip in position and a hydraulic damping cylinder for controlling the rate at which the blade tip deploys.
Claims3
A wind turbine comprising:
- a rotor with a plurality of blades which rotate about a substantially horizontal axis, wherein said rotor has a fixed blade root, a moveable blade tip and a mechanism for changing a pitch of the blade tip relative to the fixed blade root, by moving the blade tip radially outward for a distance without turning the blade tip, then turning the blade tip through an angle;
- and the blade tip comprises a recessed portion where it attaches to the blade root.
Dependencies are inferred from the claim text.