Patent ID: 6260664
Filing Date: 2001-07-17
Classification: F16K,Y10T

Abstract:
An inlet shunt valve for supplying grease, comprising:a valve body;an inlet passageway in the valve body for connection to a source of grease;an outlet passageway in the valve body for the outflow of grease from the valve body;a bore in the valve body connected to the inlet port and outlet ports and through which grease may flow;a spool mounted in the bore and movable between an open position, allowing grease to flow through the bore, and a closed position stopping the flow of grease through the bore;a spring actuating the spool to one of the open and closed positions;a solenoid for actuating the spool to the other one of the open and closed positions and operating in opposition to the springa vent in the valve body adjacent the spring for venting grease to prevent sticking of the valve spool by a buildup of grease residue about the spring; anda vent in the valve body adjacent the solenoid to vent grease from building up within the solenoid.