Patent ID: 8340875
Filing Date: 2012-12-25
Classification: E02F,F15B

Abstract:
1. A hydraulic system, comprising: a pump configured to pressurize fluid; a lift actuator; a lift valve arrangement configured to meter pressurized fluid from the pump into the lift actuator to lift a work tool; a lift sensor associated with the lift actuator and configured to generate a first signal indicative of an actual lift velocity of the work tool; a tilt actuator; a tilt valve arrangement configured to meter pressurized fluid from the pump into the tilt actuator to tilt the work tool; at least one operator interface device movable by an operator to generate a second signal indicative of a desired lift velocity of the work tool, and a third signal indicative of desired tilt velocity of the work tool; and a controller in communication with the lift valve arrangement, the lift sensor, the tilt valve arrangement, and the at least one operator interface device, the controller being configured to: