Patent ID: 6769348
Filing Date: 2004-08-03
Classification: E02F,F15B

Abstract:
A hydraulic system comprising:a pressurized fluid supply; a plurality of non-priority elements each including a signal port and a supply port; at least one priority implement including a signal port and a supply port; a valve arrangement adapted to receive fluid from said pressurized fluid supply and selectively apportion fluid between said supply port of said at least one priority implement and said supply ports of said plurality of non-priority elements, said valve arrangement comprising: a signal circuit operative to establish a flow priority between said at least one priority implement and said plurality of non-priority elements, said signal circuit being in fluid communication with said priority implement via a priority supply, said signal circuit having a pilot portion and a dynamic load portion; said signal port of said priority implement being in fluid communication with said valve arrangement through said dynamic load portion of said signal circuit, said signal ports of said plurality of non-priority elements being in fluid communication with said priority supply, wherein said dynamic load portion is substantially prevented from fluid communication with said signal ports of said non-priority elements to provide a stabilized dynamic load signal.