Patent ID: 8096227

Claim:
A hydraulic system, comprising: a tank configured to hold a supply of fluid; a pump configured to pressurize fluid; an actuator having a first chamber and a second chamber; a first valve fluidly connected between the pump and the first chamber; a second valve fluidly connected between the pump and the second chamber; a third valve fluidly connected between the second chamber and the tank; an operator input device displaceable from a neutral position to generate a signal indicative of a desired movement of the actuator; and a controller in communication with the first valve, the second valve, the third valve, and the operator input device, the controller being configured to: open the first and third valves by amounts related to the signal to pass fluid; and open the second valve by an amount related to the signal to pass fluid when the signal indicates a desire for increased actuator velocity, wherein the third valve continues to open during opening of the second valve.