发明名称 |
System for locating a sport object |
摘要 |
A locating system for sport objects where the user carries an r.f. transmitter, and the sport object has a conductive stripe thereon which increases the load on the transmitter as it moves closer to the sport object. The conductive stripe has an effective length of one-quarter wavelengths at the signal frequency to act as a tuned antenna.
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申请公布号 |
US4660039(A) |
申请公布日期 |
1987.04.21 |
申请号 |
US19850701716 |
申请日期 |
1985.02.14 |
申请人 |
BARRICKS, MARY S.;YEREANCE, ROBERT A. |
发明人 |
BARRICKS, MARY S.;YEREANCE, ROBERT A. |
分类号 |
A63B43/00;G01V15/00;(IPC1-7):G01S13/04 |
主分类号 |
A63B43/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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