Patent ID: 6722390
Filing Date: 2004-04-20
Classification: F15B,F16P,Y10T

Abstract:
A fluid control valve system operably interconnecting a source of pressurized working fluid, a working element and, an exhaust, comprising:an inlet providing fluid communication between the source of pressurized fluid and, the fluid control valve; a work outlet providing fluid communication between the fluid control valve and, the working element; an exhaust outlet providing fluid communication between the fluid control valve and, the exhaust; a first control valve disposed within a first passage for selectively enabling fluid communication between said inlet and, said outlet; a first pilot valve disposed within a second passage for selectively actuating said first control valve, said first and, second passages in selective fluid communication, said first pilot valve actuable to operate the fluid control valve system in one of either a deactuated mode, a normal mode, a lock-out mode and, a reset mode; and a timing device operably disposed between said first and, second passages for initiating said lock-out mode when actuation of said first control valve fails to occur within a predetermined time period after initiation by said first pilot valve, thereby prohibiting actuation of said first control valve.