| 摘要 |
The windmill includes a vertically positioned support shaft, a plurality of elongated, molded arcuate plastic vanes which are vertically positioned and operatively connected to the support shaft, which vanes are slightly flexible so winds engaging the vanes will flatten the arc of some vanes and will make the arc of other vanes tighter to provide unbalanced rotational forces on the vanes, and means operatively connect to the shaft to provide power therefrom on shaft rotation.
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