发明名称 |
Pilot-controlled non-return valve with connection |
摘要 |
<p>The non-return valve for use in hydraulic supports in deep coal mining comprises a casing (2) with several connection ports (3 - 5) in which a control piston (6) and valve piston (10) are mounted. The valve piston can slide in a sleeve (18) mounted in a bore (8) in the casing against the force of a valve spring (12). The sleeve is filled with water and only allows a controlled connection of the bore (8) with an inner chamber (19).</p> |
申请公布号 |
AU782414(B2) |
申请公布日期 |
2005.07.28 |
申请号 |
AU20010043749 |
申请日期 |
2001.05.07 |
申请人 |
RICHARD VOSS GRUBENAUSBAU GMBH |
发明人 |
WOLFGANG VOSS |
分类号 |
F16K15/02;F16K17/04;(IPC1-7):F16K31/122;F16K31/124 |
主分类号 |
F16K15/02 |
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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