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专利名称：Spinning top
发明人：Clemens V. Hedeen, Jr.申请号：US09/501117申请日：20000209公开号：US06146233A公开日：20001114
摘要：Disclosed herein are spinning tops having an improved pull- string attachmentsystem. The pull-string has a toothed catch at one end that engages with a cylindricalhub of the top. The hub is at the center of a deep radial groove transverse to the top'saxis of rotation in which the pull-string is wound. When the top is thrown and the pull-string is pulled, the catch smoothly disengages so that the pull-string releases cleanlyfrom the top. Replaceable tips are also provided.
申请人：HEDEEN TOYS LLC
代理机构：Quarles & Brady LLP
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