| 发明名称 |
Mine dust and flame guard filter - has multi-layered construction with flame screening mesh in inlet and/or clean air ducts |
| 摘要 |
<p>The filter, as used in underground mining operations, is made up from two dust-filtering layers (6, 7), one behind the other, and serves both as dust filter and flame-protective filter as in patent 2819061. It is made pref. in multi-layered form with flame-protective mesh in the inlet and/or purified gas duct.</p> |
| 申请公布号 |
DE2842908(A1) |
申请公布日期 |
1980.04.17 |
| 申请号 |
DE19782842908 |
申请日期 |
1978.10.02 |
| 申请人 |
HOELTER,HEINZ |
发明人 |
HOELTER,HEINZ,ING.;GRESCH,HEINZ,ING.;IGELBUESCHER,HEINRICH,ING. |
| 分类号 |
E21F5/00;E21F5/20;(IPC1-7):E21F5/20 |
主分类号 |
E21F5/00 |
| 代理机构 |
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| 地址 |
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