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    • 8. 发明授权
    • Random selection device
    • 随机选择装置
    • US4911447A
    • 1990-03-27
    • US322927
    • 1989-03-14
    • John D. Pickard
    • John D. Pickard
    • A63F5/04A63F9/00A63F11/00
    • A63F11/0011A63F5/04A63H1/32A63F2011/0016A63F2250/128
    • A random determination device includes a generally circular central planar element having an indicating device located thereon where the outer circumference of the central element is generally circular except for inset lobes and where the central element is received in the opening in an annular element having choices indicated around the periphery so the indicating device of the central element can selectively point to various choices and where notches are provided in the periphery of the central element and adapted to receive clutch means and where the notches of the central element are shaped so that upon relative rotation of the central element and the outer element in one direction the clutch means engage the inner periphery of the outer element and prevent relative movement of the central and outer elements and upon rotation in the opposite direction the clutch means recess into the notches out of engagement with the outer element to allow rotation of the outer element on the inner element.
    • 随机确定装置包括大致圆形的中央平面元件,其具有位于其上的指示装置,其中中心元件的外圆周大体上是圆形的,除了插入凸角之外,并且其中中心元件被容纳在具有围绕 外围,因此中心元件的指示装置可以选择性地指向各种选择,并且在中心元件的周边设置切口并适于接纳离合器装置,并且其中中心元件的凹口成形为使得在相对旋转时 中心元件和外部元件在一个方向上,离合器装置接合外部元件的内周边并且防止中心和外部元件的相对运动,并且在相反方向旋转时,离合器装置凹入到凹口中脱离与 外部元件以允许外部元件在内部旋转 r元素。