发明名称 |
HYDRAULIC CIRCUIT USED FOR LONGWALL FACE REMOVAL |
摘要 |
A hydraulic switching mechanism for longwall supports. The present invention provides a hydraulic system that is controlled by its own pressure and may be adaptable to those currently in use so that life-threatening and costly faults cannot occur. With the present invention, the retrofitting of existing systems may be made possible without significant expenditure in modification. |
申请公布号 |
PL379765(A1) |
申请公布日期 |
2006.11.13 |
申请号 |
PL20040379765 |
申请日期 |
2004.11.18 |
申请人 |
TIEFENBACH CONTROL SYSTEMS GMBH |
发明人 |
KUSSEL WILLI |
分类号 |
E21D23/16;E21D23/26;F15B11/16;F15B20/00 |
主分类号 |
E21D23/16 |
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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