发明名称 Projectile detection
摘要 PCT No. PCT/GB93/01671 Sec. 371 Date Feb. 10, 1995 Sec. 102(e) Date Feb. 10, 1995 PCT Filed Aug. 6, 1993 PCT Pub. No. WO94/04883 PCT Pub. Date Mar. 3, 1994.A dart target includes a plurality of electrically conductive scoring beds. An aerial is spaced from the beds by a separation of the order of magnitude of the size of the target. A transmitter and receiver are connected to the aerial and beds. When an electrically conductive dart is imbedded in one of the beds it receives a signal from the aerial which enables determination of which bed the dart is imbedded in. The spacing of the aerial results in more or less uniform signal strength at the dart regardless of its location in the target.
申请公布号 US5462283(A) 申请公布日期 1995.10.31
申请号 US19950382041 申请日期 1995.02.10
申请人 TARGET MARKETING LIMITED 发明人 ALLEN, JOHN
分类号 F41J3/00;F41J5/04;F41J5/052;(IPC1-7):F41J5/04 主分类号 F41J3/00
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