| 摘要 |
A yo-yo incorporates a construction that enables the gap between the yo-yo halves to be adjusted simply and quickly. The halves of the yo-yo are threadably mounted on the ends of the yo-yo axle. The yo-yo halves are biased apart axially to maintain firm frictional contact between the yo-yo halves and the axial. The gap may be adjusted simply by rotating the yo-yo halves with respect to each other. The inwardly facing surfaces of the yo-yo halves also incorporate angular relationships to facilitate yo-yo play.
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