发明名称 Field surface related projectile target construction
摘要 An outdoor game target construction to be hand pressed or impact-driven into a ground area forming the field surface, a series of targets being disposed in spaced apart locations on said surface and each when aimed at and successfully struck by a game ball rolling on said surface will emit a distinctive sound indicative of the fact that it had been hit. The invention also includes an improved and simplified means for mechanically mounting a sound producing cylinder to a ground stake whereby the cylinder will have universal swinging movement upon the stake insuring that the target will emit a sound when struck by a ball aimed at it from any angle.
申请公布号 US4261570(A) 申请公布日期 1981.04.14
申请号 US19790072885 申请日期 1979.09.06
申请人 SWITZER, WILLIAM K. 发明人 SWITZER, WILLIAM K.
分类号 A63B63/00;(IPC1-7):A63B71/00 主分类号 A63B63/00
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