| 摘要 |
<p>The invention relates to a streamer ball 10 for use in tennis-type bat and bouncing ball games played with bats having rigid, untensioned ball-striking surfaces and comprises an impact body 12, a tail 14 and a spacer stem 16. The impact body comprises a hemispherical front compression body part 24 including a resiliently compressible frontal impact zone; and a hemispherical rear ballast body part 26. The spacer stem includes a stem formation 17, an anchor formation 28 embedded in the rear ballast body part 26 and an attachment formation 32 for the tail comprising elongate streamers which extend rearwardly from the spacer stem in flight. The rear ballast body part has a greater density than that of the front compression body part and the combined mass of the rear ballast body part and the spacer stem provides ballast rearwardly of the front compression body part providing for adequate compression of the frontal impact zone upon impact.</p> |
