Hydraulic system with an actuator having independe

专利名称：Hydraulic system with an actuator having

independent meter-in meter-out control

发明人：Thomas J. Hajek, Jr.,Vincent Triffaux申请号：US09406893申请日：19990928公开号：US06691604B1公开日：20040217

专利附图：

摘要：A fluid circuit is provided to independently control the flow of fluid into and outof each end of an actuator. This is accomplished by having two different independentlycontrolled valves controlling the flow of fluid into and out of one end of the actuator and

by having two other independently controlled valves controlling the flow of fluid intoand out of the other end of the actuator. Regeneration of the fluid flow from one end ofthe actuator to the other end of the actuator is provided by blocking the exhaust flow offluid to the reservoir by one of the independently controlled valves and redirecting theflow across the other of the independently controlled valves to join with the flow of thepump that is being directed to the other end of the actuator. This arrangement permits aportion or all of the fluid from one end of the actuator to be regenerated to the otherend of the actuator.

申请人：CATERPILLAR INC

代理人：J. W. Burrows,Steve M Hanley,D James Barnes

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