发明名称 Baseball pitching aid
摘要 A simulated image of a batter facing a pitcher is provided for use in pitching practice. The lower portion of the batter includes one or more stakes which are inserted into the ground and provide a stable support. By positioning the simulated batter in an appropriate place near "home plate", a pitcher can use the batter as a reference to determine the location of the strike zone. The size of the batter can be adjusted to vary the size of the strike zone. A ball detection apparatus and audio output can be provided to indicate when a pitch is detected and whether the pitch is a ball or a strike.
申请公布号 AU2993000(A) 申请公布日期 2000.08.29
申请号 AU20000029930 申请日期 2000.02.11
申请人 LAURA ZANE KOLMAR 发明人 LAURA ZANE KOLMAR
分类号 A63B63/00;A63B69/00 主分类号 A63B63/00
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