发明名称 |
HYDRAULISCHER REGLER |
摘要 |
<p>A spool type directional control valve switches flow of oil discharged from an oil hydraulic pump to a hydraulic actuator, and decreases internal leak of a cylinder. Two sets of separated cylinder passages are formed on a valve body provided with a main spool, and a nonleak valve is provided across them. The nonleak valve is equipped with a main passage switching puppet having a throttle on the nose, a spring for energizing it to a close side, a pilot poppet for controlling pressure of a spring chamber in which the spring is enclosed, and a piston for operating the poppet.</p> |
申请公布号 |
DE3913460(A1) |
申请公布日期 |
1989.11.02 |
申请号 |
DE19893913460 |
申请日期 |
1989.04.24 |
申请人 |
DIESEL KIKI CO., LTD., TOKIO/TOKYO, JP |
发明人 |
UENO, KATSUMI, HIGASHI, SAITAMA, JP |
分类号 |
F15B13/01;(IPC1-7):F15B13/042 |
主分类号 |
F15B13/01 |
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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