发明名称 Dart target system
摘要 A dart target system comprising a first target movably mounted on a frame for rotation about a first axis, whereby when a greater number of darts are stuck in the target on one side of the axis than the other, then that one side will be below the other side, indicating victory for the player throwing toward the one side. An electrical system forming a part of the dart target system and delivering a light or other sensible signal of one nature when the victory is achieved by a person throwing on one side of the target and of a different nature when a victory is achieved by a person throwing at the opposite side of the target.
申请公布号 US4415162(A) 申请公布日期 1983.11.15
申请号 US19810287362 申请日期 1981.07.27
申请人 SHEPPARD, DAVID P. 发明人 SHEPPARD, DAVID P.
分类号 F41J3/02;F41J5/04;(IPC1-7):F41J3/00 主分类号 F41J3/02
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