发明名称 |
Machine guard installations |
摘要 |
A machine guard installation makes use of a proximity detector system including a passive time circuit on the guard. The timed circuit includes a coil which is magnetically coupled to a further coil only when the guard is in its operative guarding position. The further coil forms a part of a positive feedback loop of an amplifier in an active detector circuit, which oscillates only when the coils are coupled as aforesaid.
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申请公布号 |
US4130763(A) |
申请公布日期 |
1978.12.19 |
申请号 |
US19760727996 |
申请日期 |
1976.09.30 |
申请人 |
WICKMAN MACHINE TOOL SALES LIMITED |
发明人 |
MAINPRIZE, DAVID |
分类号 |
B23Q11/00;F16P3/00;G01V3/08;G05B9/02;G08B21/00;H03K17/95;(IPC1-7):H01H35/00 |
主分类号 |
B23Q11/00 |
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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