Valve for fluid medium under pressure

Claim 1

IN A FLUID CONTROL VALVE, THE COMBINATION OF A FIRST MEMBER HAVING AN END PROVIDED WITH A CYLINDRICAL CHAMBER AND AN ANNULAR SURFACE DISPOSED OUTWARDLY OF SAID CHAMBER, A SECOND MEMBER HAVING AN END PROVIDED WITH A BORE FOR RECEIVING FLUID UNDER PRESSURE AND FORMED WITH A VALVE SEAT FACING SAID CHAMBER AND WITH AN ANNULAR SURFACE DISPOSED OUTWARDLY OF SAID VALVE SEAT AND IN ALIGNMENT WITH SAID ANNULAR SURFACE OF SAID FIRST MEMBER, MEANS FOR MOVING ONE OF SAID BODY MEMBERS BETWEEN A CLOSED POSITION WHEREAT SAID ANNULAR SURFACES ARE ABUTTING AND AN OPEN POSITION WHEREAS SAID ANNULAR SURFACES ARE SEPARATED, A RESILIENT CYLINDRICAL VALVE SEALING MEMBER SLIDABLY MOUNTED IN SAID CHAMBER FOR COOPERATING WITH SAID VALVE SEAT TO PROVIDE A FLUID TIGHT SEAL WHEN SAID MEMBERS ARE IN SAID CLOSED POSITION, SAID VALVE SEALING MEMBER BEING MOVABLE INTO SAID CHAMBER TO ALLOW SAID ANNULAR SURFACES TO ABSORB THE ENERGY OF SAID MOVING MEMBER DURING THE CLOSING OF THE VALVE, SPRING MEANS FOR URGING THE VALVE SEALING MEMBER TOWARD SAID VALVE SEAT, AND STRUCTURAL MEANS CARRIED BY ONE OF SAID MEMBERS PROVIDING A FLUID PASSAGEWAY POSITIONED OUTWARDLY OF SAID CHAMBER IN FLUID FLOW COMMUNICATION WITH SAID BORE ONLY WHEN THE VALVE IS OPEN.