发明名称 BASEBALL PITCHING AID
摘要 <p>A simulated image of a batter (10) facing a pitcher is provided for use in pitching practice. The lower portion of the batter includes one or more stakes (14) which are inserted into the ground and provide a stable support. By positioning the simulated batter in an appropriate place near 'home plate' (50), a pitcher can use the batter as a reference to determine the location of the strike zone (51). The size of the batter (10) can be adjusted to vary the size of the strike zone (51). A ball detection apparatus (60) and audio output circuit (61) and one or more sensors (62) can be provided to indicate when a pitch is detected and whether the pitch is a ball or a strike.</p>
申请公布号 WO2000047294(A1) 申请公布日期 2000.08.17
申请号 US2000003733 申请日期 2000.02.11
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