发明名称 Training bat
摘要 An improved training bat having training assemblies affixed thereto on either side of the preferred hitting region of the bat, said assemblies constructed of a rigid, durable material which, when struck by a ball, emit a sound different from the sound emitted by the preferred hitting region of the bat when struck by the same ball, such that a batter using the improved training bat will immediately recognize by the sound made whether a ball contacted by the improved training bat was properly hit; and a method of constructing same.
申请公布号 US7625305(B2) 申请公布日期 2009.12.01
申请号 US20070688282 申请日期 2007.03.20
申请人 LANCISI PAUL F 发明人 LANCISI PAUL F.
分类号 A63B69/40;A63B69/00 主分类号 A63B69/40
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