Patent ID: 6752600
Filing Date: 2004-06-22
Classification: F04B,F15B

Abstract:
A fluid system including:a hydraulic motor; a fluid reservoir; a plurality of fixed displacement pumps; drive means operatively connected to the fixed displacement pumps for driving the same; a control valve for selectively directing a flow of fluid to either the reservoir or the hydraulic motor; a function valve operatively connected to the control valve; a control system having means for determining an external condition, including a rotational speed measuring device for measuring the rotational speed of the drive means, wherein the rotational speed measuring device generates an electrical signal, the control system further including an electrical circuit that receives the electrical signal from the rotational speed measuring device and communicates with the control valve and the function valve; means responsive to the signal for switching the control valve; and said fluid system being adapted for use on a refuse truck; wherein the control valve and the function valve are combined into a single valve block.