发明名称 |
VENT CONTROL FOR CYLINDER MOUNTED LOAD CHECK VALVES |
摘要 |
<p>VENT CONTROL FOR CYLINDER MOUNTED LOAD CHECK VALVES A fluid source delivers fluid to a control valve having Float, First direction and Second direction positions. A piston-bore check valve allows flow to the motor and normally blocks reverse flow, the piston having its first end biased against a seat. Flow is restricted between the motor's first end and a control chamber which communicates with the piston's second end. A full flow path between the motor's first end and the bore provides a force acting against the piston's first end. A drain valve entry port communicates with the motor's first end and an exit port thereof communicates with a sump to provide either entry port-exit port connection or blocking. A mechanism moves responsive to shifting of the control valve to shift the drain valve to connect the entry and exit ports when the control valve is in a Float or a Lower position and to block such connection in a Raise or Neutral position.</p> |
申请公布号 |
CA1047367(A) |
申请公布日期 |
1979.01.30 |
申请号 |
CA19770290867 |
申请日期 |
1977.11.15 |
申请人 |
CATERPILLAR TRACTOR CO. |
发明人 |
FINLEY, LLOYD D.;KUSPER, LEROY F. |
分类号 |
F15B11/08;F15B13/01;F15B20/00;(IPC1-7):15B11/00 |
主分类号 |
F15B11/08 |
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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