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Integrated load-sensing hydraulic system

United States Patent Application

20070227135
A1
View the Complete Application at the US Patent & Trademark Office
A hydraulic system for a machine having a work tool is disclosed. The hydraulic system has a tank configured to hold a supply of fluid, and a source configured to pressurize the fluid from the tank. The hydraulic system also has a first hydraulic actuator configured to receive pressurized fluid from the source and effect movement of the work tool, and a second hydraulic actuator configured to receive pressurized fluid from the source and effect steering of the machine. The hydraulic system additionally has at least one operator interface device configured to receive pressurized fluid from the source and selectively meter the pressurized fluid to a control valve to effect movement of the control valve.
Khalil, Rabie E. (Dunlap, IL)
Caterpillar Inc.
11/ 392,771
March 30, 2006
U.S. GOVERNMENT RIGHTS [0001] This invention was made with government support under the terms of Contract No. DE-FC36-01GO11095 awarded by the Department of Energy. The government may have certain rights in this invention.