Power brake apparatus

Claim 1

A MEANS TO CONTROL FLUID DELIVERY FROM A PRESSURE INTENSIFYING DEVICE, WHICH MEANS COMPRISES: A VALVE BODY RESILIENTLY MOUNTED IN SAID PRESSURE INTENSIFYING DEVICE AHEAD OF A FLUID OUTLET FROM SAID DEVICE, SAID VALVE BODY HAVING AN AXIAL OPENING COMMUNICATING WITH SAID DEVICE AND LEADING TO A CHAMBER WITHIN SAID VALVE BODY, WHICH CHAMBER IS COMMUNICATED WITH THE FLUID OUTLET; A POPPET MEMBER SLIDABLY MOUNTED IN SAID CHAMBER BETWEEN THE OPENING IN THE VALVE BODY AND THE COMMUNICATION BETWEEN SAID CHAMBER AND SAID OUTLET, SAID POPPET MEMBER HAVING A SHANK PROJECTING THEREFROM; A FIRST SPRING MEANS COILED ABOUT SAID SHANK PORTION OF SAID POPPET SUCH THAT IT HAS RADIALLY AND AXIALLY EXTENDING ENDS THAT IN THEIR FREE STATE ARE OF GREATER DIAMETER THAN THE SIDEWALLS OF SAID CHAMBER SO AS TO FRICTIONALLY ENGAGE THE SIDEWALLS OF SAID CHAMBER TO RADIALLY POSITION SAID POPPET WITHIN SAID CHAMBER; AND A SECOND SPRING MEANS OPERATIVELY CONNECTED TO AN END WALL OF SAID CHAMBER ADJACENT THE COMMUNICATION OF SAID CHAMBER TO SAID OUTLET AND BEARING, OPPOSITE THE END WALL OF SAID CHAMBER, OVER SAID FIRST SPRING MEANS ABOUT THE SHANK OF SAID POPPET UPON THE RADIATING ENDS OF SAID FIRST SPRING MEANS TO HOLD SAID FIRST SPRING MEANS ON SAID POPPET AND AXIALLY POSITIONED SAID POPPET TO ABUT SAID VALVE BODY TO CLOSE SAID OPENING INTO SAID CHAMBER.