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发明授权
US3847442A Dual rim wheel structure 失效
双轮轮结构

Dual rim wheel structure
摘要：
The spokes of a wheel fit within a pair of conventional drop center rims. Radial flanges on the axially inner ends of the spokes are shaped to engage an angular configuration on the drop center opposite from the locking angle. The edges of a spacer ring are shaped to engage the locking angles of the inner and outer rims.
摘要（中）：

车轮的轮辐装配在一对常规的落下中心轮辋内。 辐条的轴向内端上的径向凸缘成形为与锁定角度相对的液滴中心上的角配置接合。 间隔环的边缘成形为接合内边缘和外边缘的锁定角度。

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