发明名称 |
Load lifting and lowering control system |
摘要 |
A hydraulic control arrangement for the lifting and lowering of loads is disclosed. The system is illustrated in an industrial truck and includes a multiple element control valve with timing circuitry to eliminate unwanted transient pressure surges during valve actuation. Series-parallel oil flow paths are provided for directing and controlling oil from the load lifting cylinder to the oil reservoir when the load is being lowered.
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申请公布号 |
US4065922(A) |
申请公布日期 |
1978.01.03 |
申请号 |
US19760716476 |
申请日期 |
1976.08.23 |
申请人 |
HYSTER COMPANY |
发明人 |
OTT, JAMES I.;SCHWAB, DELMAR G. |
分类号 |
F15B21/02;(IPC1-7):F16H39/46 |
主分类号 |
F15B21/02 |
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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