| 摘要 |
A vane pivotally mounted atop a wind turbine, rotatably mounted on a support structure, rotates freely with the wind. A cam is affixed to and rotatable with the vane. A toothed wheel is stationarily affixed to the support structure. A pair of pawls are mounted atop the wind turbine in operative proximity with the cam and the toothed wheel. Thus, when the vane rotates to align itself with a new wind vector, the cam rotates with the vane and disengages one of the pawls from the toothed wheel thereby permitting the wind turbine to rotate in the direction of rotation of the vane until the wind turbine is aligned with the vane at which point both the pawls engage the toothed wheel, locking the wind turbine in aligned position with the wind.
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