Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1997-10-23
1999-04-06
Michalsky, Gerald A.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60452, 91446, 91518, 13759613, F15B 1308
Patent
active
058903623
ABSTRACT:
An improved pressure-compensated hydraulic system for feeding hydraulic fluid from a variable displacement pump to multiple hydraulic actuators. A separate valve section controls the fluid flow between the pump and a different actuator. Each valve section has a pressure compensating valve with a valve member and poppet within a bore and biased apart by a spring. The poppet acts as a check valve which prevents fluid flow from the actuator through the valve section to the pump when the back pressure from the load exceeds the pump supply pressure. A pressure differential between the load-dependent pressure and the actuator pressure determines a position of the valve member which controls the pressure applied to the pump pressure control input.
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HUSCO International Inc.
Michalsky Gerald A.
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