| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved yo-yo. <P>SOLUTION: A yo-yo 1 has two side assemblies for sandwiching a center axle onto which a tether is secured. Each of the side assemblies includes a releasable, disk-shaped rim piece 50. <P>COPYRIGHT: (C)2012,JPO&INPIT |
