发明名称 Batter actuated baseball batting practice device
摘要 A baseball batting practice device in which a diametral bore in a baseball is snugly lined by a metal tube, the ends of which are flared to secure the cover of the baseball adjacent the ends of the ball bore. A suspending line secured adjacent its upper end to an overhead support extends successively through a sleeve and the tube in the ball and has ball restraining means below the ball which rests thereon. A swing-and-lift line connects the suspending line above the sleeve to an upright support below and laterally of the suspended ball. When a batter bats the ball the suspending and swing-and-lift lines are wound progressively about the upright support toward the ball until the ball strikes and rebounds from the upright support and returns to the batting zone to be batted again.
申请公布号 US5135219(A) 申请公布日期 1992.08.04
申请号 US19900608554 申请日期 1990.11.02
申请人 MCKEON, TIM O.;RUSSELL, DOUGLAS R. 发明人 MCKEON, TIM O.;RUSSELL, DOUGLAS R.
分类号 A63B69/00 主分类号 A63B69/00
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