| 摘要 |
PROBLEM TO BE SOLVED: To provide a top that is not easy to fall while rotating.SOLUTION: A top has a weight part 11, and a stem 12 that is disposed so as to pass through the center of the weight part 11, the stem 12 serving as the center of rotation, where the stem 12 has a spherical surface part at its tip 13.SELECTED DRAWING: Figure 1 |
