发明名称 |
Personnel detection and protection systems for use in underground mines |
摘要 |
A personnel detection and protection system comprises sensor means for detecting the presence of personnel in a prohibited operational zone, and for deriving signal means indicative of such a detected presence, and control means responsive to the deriving of such signal means to control the operation or movement of equipment in the prohibited zone.
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申请公布号 |
US4722574(A) |
申请公布日期 |
1988.02.02 |
申请号 |
US19860897377 |
申请日期 |
1986.08.18 |
申请人 |
COAL INDUSTRY (PATENTS) LIMITED |
发明人 |
BARHAM, DEREK K.;JENKINS, PHILIP P. |
分类号 |
E21D23/16;E21D23/12;E21D23/14;E21F11/00;E21F17/18;F16P3/14;(IPC1-7):E21D23/12 |
主分类号 |
E21D23/16 |
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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