发明名称 Yo-yo having visual indication of response setting
摘要 The invention is a yo-yo that features a visual indication system capable of facilitating the setting of the yo-yo's variable response system and then providing an indication to the user of the yo-yo's responsiveness setting. Preferably, the yo-yo includes relatively rotatable sides, with each side having a number of identical visual indicators and a number of tether engagement ribs that are in registry with the indicators.
申请公布号 US6887122(B1) 申请公布日期 2005.05.03
申请号 US20040903451 申请日期 2004.07.29
申请人 VAN DAN ELZEN HANS W.;MCPHEE BENJAMIN J. 发明人 VAN DAN ELZEN HANS W.;MCPHEE BENJAMIN J.
分类号 A63H1/30;(IPC1-7):A63H1/30 主分类号 A63H1/30
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