Patent ID: 6715402
Filing Date: 2004-04-06
Classification: F15B

Abstract:
A hydraulic system for operating first and second actuators each having first and second ports, said hydraulic system comprising:a primary control valve having one port for connection to a source of pressurized hydraulic fluid, another port for connection to a tank for hydraulic fluid, and a common port; a bidirectional first control valve connecting the common port of the primary control valve to the first port of the first actuator; a bidirectional second control valve connecting the common port of the primary control valve to the first port of the second actuator; a third control valve connecting both the second port of the first actuator and the second port of the second actuator to the source of pressurized hydraulic fluid; and a fourth control valve connecting both the second port of the first actuator and the second port of the second actuator to the tank for hydraulic fluid.