发明名称 |
Mineral winning installations |
摘要 |
A mineral winning installation employs a plurality of plough bodies spaced apart along the mineral face and interconnected to form a common plough train which is moved in unison back and forth along the face. The plough bodies have high-pressure fluid emission nozzles and a high-pressure pipe line extending between the bodies supplies high pressure fluid to the nozzles, which discharge the fluid for impact with the mineral face.
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申请公布号 |
US4198098(A) |
申请公布日期 |
1980.04.15 |
申请号 |
US19780950839 |
申请日期 |
1978.10.12 |
申请人 |
GEWERKSCHAFT EISENHUTTE WESTFALIA |
发明人 |
LOBBE, ARMIN |
分类号 |
E21C25/60;E21C27/34;(IPC1-7):E21C27/40 |
主分类号 |
E21C25/60 |
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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