发明名称 |
Device for finding concealed studs |
摘要 |
PCT No. PCT/GB95/00489 Sec. 371 Date Oct. 31, 1996 Sec. 102(e) Date Oct. 31, 1996 PCT Filed Mar. 7, 1995 PCT Pub. No. WO95/24660 PCT Pub. Date Sep. 14, 1995A detector device for finding concealed studs in partitioning includes a pair of plates which are supplied with ac via resistors. Amplifiers produce outputs representing the sum and difference respectively of the signals imposed on the plates. The sum signal drives a display enabling circuit including a comparator which enables a display means to operate when the sum signal exceeds a threshold level. The difference signal drives two comparators which control three display device such that one display device is operated only when the detector device is over the center of a stud. The other display devices indicate which way the detector should be moved to place it over the center of the stud.
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申请公布号 |
US5812057(A) |
申请公布日期 |
1998.09.22 |
申请号 |
US19960702661 |
申请日期 |
1996.10.31 |
申请人 |
TURNER INTELLECTUAL PROPERTY LTD. |
发明人 |
HEPWORTH, PAUL STEABBEN;BROOKS, BRIAN EDWARD;HATCHER, PAUL |
分类号 |
G01V3/08;H03K17/96;(IPC1-7):G05B21/00 |
主分类号 |
G01V3/08 |
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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