| 摘要 |
A toy comprising a hollow member and a rod for operating the hollow member. The hollow member has an opening at one of two ends thereof, a smooth circular boundary edge at said one end at the inside of the opening, a spherical rotationally symmetrical surface on its outside at its other end, the axis of symmetry of said surface being coaxial relative to the upper smooth circular boundary edge. Furthermore the toy has a circular annular guide surface disposed within the hollow member adjacent said other end thereof, said guide surface being coaxial with respect to said axis. The toy might have a flange-like edge portion and vanes which extend radially and which are inclined relative to a plane extending normal to an axis of rotation of the member. |
