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公开(公告)号:US20180256963A1
公开(公告)日:2018-09-13
申请号:US15917600
申请日:2018-03-10
申请人: Yao
发明人: Cynthia Yao , Simin Yao
CPC分类号: A63B71/0622 , A63B60/00 , A63B60/10 , A63B60/16 , A63B2071/0655 , A63B2071/0694 , A63B2102/02 , A63B2102/32 , A63B2209/00
摘要: The invented apparatus is useful in any sport that uses a racquet, a bat, a club, a stick, or anything similar. It helps to improve user awareness of his/her wrist angle relative to the handle axis by providing the user with touch feeling and visual indication. Without electronic sensors or any attachment to the user's body, the invention provides real-time feedback for self-correction.