Patent ID: 6155776
Filing Date: 2000-12-05
Classification: B60P

Abstract:
A method of controlling movement of an ejector plate and a tailgate which are operatively associated with a receptacle of a work machine, comprising the steps of:supplying pressurized fluid via a first fluid line to (i) a first intake port of a multi-stage cylinder, and (ii) a second intake port of a single-stage cylinder;moving the ejector plate a first distance D.sub.1 toward the tailgate with the multi-stage hydraulic cylinder in response to the supplying step;preventing movement of the tailgate during the ejector plate first distance moving step;moving the ejector plate a second distance D.sub.2 with the multi-stage hydraulic cylinder toward the tailgate in response to the supplying step, wherein the ejector plate second distance moving step is performed after the ejector plate first distance moving step;positioning a lower portion of the ejector plate a distance D.sub.3 above a floor of the receptacle during the ejection plate first distance moving step;moving the tailgate with the single-stage hydraulic cylinder between a closed position and an open position after the ejector plate first distance moving step is performed;moving the ejector plate away from the tailgate with the multistage hydraulic cylinder; andpositioning the lower portion of the ejector plate a distance D.sub.4 above the floor of the receptacle during the movement of the ejector plate away from the tailgate, wherein the distance D.sub.4 is greater than the distance D.sub.3.