发明名称 Hitting Plank
摘要 This batting training device can be used by either a right handed or left handed batter. The player's rear foot will be placed on a pivot member that will permit free rotation of the player's back foot to a predetermined point. The device may be inclined to force the user to maintain his or her weight more on the back foot in order to achieve maximum bat speed that results in maximum power.
申请公布号 US2011218059(A1) 申请公布日期 2011.09.08
申请号 US20100715485 申请日期 2010.03.02
申请人 LEONE PAUL;BOSS BILL 发明人 LEONE PAUL;BOSS BILL
分类号 A63B69/00 主分类号 A63B69/00
代理机构 代理人
主权项
地址