发明名称 |
DEAD-MAN'S HANDLE SWITCHABLE CONTROL VALVE |
摘要 |
<p>A compact hydraulic control device for use with mining apparatus is composed of a housing block containing tappet-operated valves. A multi-part cam shaft serves selectively to operate the valves by displacing the tappets by manual control effected by external levers. To automatically restore the cam shaft back into a neutral position as a "dead-man's handle" restoring system use is made of a pair of piston and cylinder assemblies mounted as detachable cartridges in parallel locations within bores in the housing block and having push rods which act on a cam of the cam shaft under the action of hydraulic or pneumatic pressure medium.</p> |
申请公布号 |
PL247392(A1) |
申请公布日期 |
1985.01.02 |
申请号 |
PL19840247392 |
申请日期 |
1984.04.25 |
申请人 |
GEWERK EISENHUETTE WESTFALIA |
发明人 |
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分类号 |
E21D23/16;E21D23/26;F15B13/02;(IPC1-7):E21D/ |
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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