发明名称 |
Warning device to indicate the state of gases exhaustion of a gas filter retaining dangerous gases |
摘要 |
A warning device comprised of an electrochemical cell which detects the concentration of toxic gas that is passing through a housing holding the cell to a face mask. The cell produces a signal corresponding to the concentration level of toxic gas present. The signal is received by a threshold switch which is set to produce a signal only when a signal from the cell equals or exceeds a predetermined level. The signal from the threshold switch activates a visual signal means and acoustical signal means to indicate that a gas filter, connected to the warning device, is exhausted.
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申请公布号 |
US4873970(A) |
申请公布日期 |
1989.10.17 |
申请号 |
US19890323069 |
申请日期 |
1989.03.10 |
申请人 |
AUERGESELLSCHAFT GMBH |
发明人 |
FREIDANK, MICHAEL;COYM, JURGEN;SCHUBERT, AXEL |
分类号 |
A62B18/08 |
主分类号 |
A62B18/08 |
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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