发明名称 |
Mine safety filter |
摘要 |
The outer envelope of a filter used in mining is designed as a double casing, slot openings being provided in this outer casing which permit a natural air current through the double casing and ensure relatively short routes for the air. In this way, the housing of a safety filter can be kept cool to such an extent that, if smouldering fires occur, the dust present in the filter cannot ignite. <IMAGE>
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申请公布号 |
DE3612054(A1) |
申请公布日期 |
1987.10.15 |
申请号 |
DE19863612054 |
申请日期 |
1986.04.10 |
申请人 |
HOELTER,HEINZ,DIPL.-ING. |
发明人 |
HOELTER,HEINZ,DIPL.-ING.;IGELBUESCHER,HEINRICH,DIPL.-ING.;GRESCH,HEINRICH,ING.;DEWERT,HERIBERT,DIPL.-ING. |
分类号 |
E21F5/20;(IPC1-7):E21F5/20 |
主分类号 |
E21F5/20 |
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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