Patent ID: 8474254

Claim:
A system for performing a floating function in an earthmoving implement of an earthmoving machine without physically connecting chambers within a hydraulic actuator that is adapted to raise and lower the earthmoving implement, the system comprising: means for delivering a pressurized fluid to and receiving pressurized fluid from the actuator and the chambers thereof separated by a piston within the actuator; at least one valve adapted to compensate for differences in volume between chambers of the actuator; and an electronic control circuit comprising electronic sensors for sensing the pressures in the chambers of the actuator, and a controller for receiving outputs of the sensors, calculating an amount of the pressurized fluid that must be delivered to or received from the actuator to achieve substantially constant pressures in the chambers of the actuator, and controlling the delivering-receiving means to deliver or receive the amount of the pressurized fluid to achieve the substantially constant pressures in the chambers of the actuator and enable the earthmoving implement to float regardless of motion of the actuator.