Patent ID: 6571902
Filing Date: 2003-06-03
Classification: A01B,E02F,F15B,G05G,Y10T

Abstract:
A work vehicle configured to be coupled to an implement operated by a flow of hydraulic fluid, the vehicle comprising:a. a chassis; b. an engine coupled to the chassis; c. a hydraulic pump coupled to the engine to generate a flow of pressurized hydraulic fluid; d. an auxiliary proportional control valve fluidly coupled to the pump to receive, regulate and transmit the flow of pressurized hydraulic fluid and configured to be fluidly coupled to the implement and responsive to a valve-opening signal; e. an implement support arm pivotally coupled to the chassis and configured to be moved in at least two directions; f. a first hand control manipulable to move the arm in a first direction, the hand control including a first operator actuable switch; g. a second hand control configured to move the arm in a second direction different from the first direction, the second hand control including a second operator actuable control having a plurality of positions; and h. a digital controller coupled to both the first operator actuable switch and the second operator actuable control, wherein the controller is configured in a first mode of operation to generate the valve opening signal indicative of the position of the second operator-actuable control when the second control is in each of said plurality of positions, and further wherein the controller is configured in a second mode of operation to record a digital value indicative of the valve opening signal when the second operator actuable control is in each of the plurality of positions and when the operator actuates the first switch.