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    • 42. 发明公开
    • BALL SIZE ADJUSTMENT MECHANISM FOR TABLE TENNIS ROBOT
    • BALLGRÖSSENSANPASSUNGFÜRTISCHTENNISROBOTOR
    • EP1292367A4
    • 2006-01-11
    • EP00990399
    • 2000-12-27
    • NEWGY IND INC
    • BRAZZELL JAMES V
    • A63B67/04A63B69/00A63B69/40
    • A63B69/406A63B2069/402
    • An automatic table tennis ball serving device (1) is disclosed as having a generally vertically extending enclosure (3) with a table tennis ball feeding passageway (15) including a lower ball entrance (19) and an upper ball dispensing outlet (13). Ball feeding arms (15) are mounted to the enclosure (3) adjacent the lower ball entrance (19) for feeding table tennis balls (7) upwardly in the ball feeding passageway (5) against the force of gravity. A ball dispensing head (23) is mounted to the enclosure (3) adjacent the upper ball dispensing outlet (13) for serving table tennis balls to a player at selected rates and trajectories. The ball dispensing head (23) includes a ball size adjustment mechanism (31) to enable table tennis balls of at least two diameters to selectively pass through the ball dispensing head (23) when one or another diameter of the at least two different ball diameters is selected by the player.
    • 公开了一种自动乒乓球发球装置(1),其具有大致垂直延伸的外壳(3),该外壳具有包括下部球入口(19)和上部球分配出口(13)的乒乓球进给通道(15)。 球进给臂15靠近下球入口19安装在外壳3上,用于抵抗重力在球进给通道5中向上供给乒乓球7。 一个球分配头(23)安装在与上球分配出口(13)相邻的外壳(3)上,用于以选定的速率和轨迹向选手提供乒乓球。 球分配头(23)包括球尺寸调节机构(31),当至少两个不同的球直径中的一个或另一个直径时,使至少两个直径的乒乓球能够选择性地穿过球分配头(23) 被玩家选中。
    • 45. 发明公开
    • Ball throwing apparatus
    • Ballwurfvorrichtung。
    • EP0016361A1
    • 1980-10-01
    • EP80100997.8
    • 1980-02-28
    • Ando, Shimon
    • Ando, Hideki
    • A63B69/40
    • A63B69/408A63B69/40A63B2069/402
    • Ball throwing apparatus for practising baseball, tennis and the like comprising a rotating body (16) with a ball receiving port on one side and a ball projecting port on the other side, and a ball holding means (17) and a held ball releasing means provided atthe ball projecting port, wherein the ball (9) put through the ball receiving port being accelerated in the direction of rotation of the rotary body (16), and being able to project the ball (9) out exactly from the ball projecting port at a predetermined speed and in a predetermined direction by releasing the centrifugal force instantaneously at a settled angle or projecting said ball (9) out from said ball projecting port in the tangential direction of the circle of rotation.
    • 用于练习棒球,网球等的抛球装置,包括:一侧具有球接收口的旋转体(16)和另一侧的球投射口;以及球保持装置(17)和保持球释放装置 设置在球投射口处,其中穿过球接收口的球(9)沿着旋转体(16)的旋转方向被加速,并且能够将球(9)精确地投射在球的突出部 端口以预定的速度和预定的方向通过以稳定的角度瞬时释放离心力或者将所述球(9)沿所述旋转圆的切线方向从所述球投射口突出。