发明名称 |
Variable displacement hydraulic system |
摘要 |
A variable displacement hydraulic system includes a charge system having a substantially constant charge pressure, a reciprocating piston type pump having a drive chamber in communication with the charge system, and a control valve regulating the flow of fluid from the charge system to the inlet of the reciprocating piston type pump which is manually movable from a closed fluid blocking position through a first range in which it varies and controls the quantity of fluid flowing to the pump inlet and a second range in which it varies the control of pressure of fluid flowing to the pump inlet at flow rates greater than those obtainable in the first range.
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申请公布号 |
US3995973(A) |
申请公布日期 |
1976.12.07 |
申请号 |
US19750610234 |
申请日期 |
1975.09.04 |
申请人 |
DEERE & COMPANY |
发明人 |
RING, CURTIS PHILLIP;HEMMING, RAYMOND JOHN |
分类号 |
F04B49/00;F04B49/24;(IPC1-7):F04B1/04 |
主分类号 |
F04B49/00 |
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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