| 摘要 |
A practice unit viz a ball launcher (Fig. 1). Tapping its rubber pad (3) with a bat, throws a ball up from an extendable magazine (5) vertically for power batting. Gravity positions each subsequent ball for the action to be repeated. An adaptor (Fig. 11) reduces the lower end of the magazine (5) from its soft ball capacity, to a size suitable for cricket balls, base balls, sponge practice balls and the Sky-ball game balls. An adjustable ball stop (4) locks where needed for different sized balls. With an adaptor (Fig. 11) the launcher unit (Fig. 1), plus the necessary accessories, can be used for playing the Sky-ball 1988 game, either outdoors or indoors, the indoor game using an electronic target-like score indicator, that differentiates between variously powered hits. The indicator can be rendered partially inoperative by an opponent, using a control panel, before each ball is struck. |
