| 摘要 |
<p>PCT No. PCT/DE97/00211 Sec. 371 Date Nov. 18, 1998 Sec. 102(e) Date Nov. 18, 1998 PCT Filed Feb. 4, 1997 PCT Pub. No. WO97/28865 PCT Pub. Date Aug. 14, 1997A game ball with at least two axially symmetrical portions, rotatable with respect to each other, is provided with two diametrically opposite cones having a common center axis and being rotatable together around the center axis at their facing peaks. A ring-shaped central portion supplements the two cones to a ball and is rotatable relative to the two cones around the center axis. A guide groove extends in one main plane of the ball around the periphery of the ball. The groove is formed at the outer surfaces of the two spherical calottes of the cone and the central portion. Operating elements, in a peripheral direction are arranged in a row, are positioned in the main plane of the ball, and are guided within the guide groove.</p> |
