Valve for vehicle suspension system

Claim 1

A VALVE FOR CONTROLLING FLOW OF FLUID UNDER PRESSURE AND EXHAUST OF FLUID PRESSURE RESPECCTIVELY TO AND FROM AN AIR SPRING AND FOR RETAINING IN THE AIR SPRING A RESIDUAL FLUID PRESSURE OF A PREDETERMINED MINIMUM VALUE, SAID VALVE COMPRISING, A TUBULAR VALVE BODY HAVING AN IMPERFORATE OUTER DIAMETER FORMING AN INTERNAL CHAMBER, SAID TUBULAR BODY HAVING A FIRST OPEN END AND A SECOND OPEN END IN COMMUNICATION WITH SAID INTERNAL CHAMBER, FIRST VALVE MEANS IN ONE END OF SAID TUBULAR BODY INCLUDING A VALVE ELEMENT AND FIRST SPRING MEANS FOR URGING SAID VALVING ELEMENT INTO A POSITION FOR CLOSING ONE OF SAID END OPENINGS AND OPERABLE MANUALLY TO OPEN SAID ONE OPEN END FOR PRESSURE FLUID FLOW IN EITHER DIRECTION THROUGH SAID INTERNAL CHAMBER, AND A SECOND VALVE MEANS IN THE OPPOSITE END OF SAID TUBULAR BODY FOR CONTROLLING PRESSURE FLUID FLOW THROUGH THE OTHER OPEN END OF SAID VALVE BODY, SAID SECOND VALVE MEANS INCLUDING SECOND SPRING MEANS AND A VALVING ELEMENT HAVING ONE POSITION FOR ALLOWING PRESSURIZED FLUID FLOW FROM SAID INTERNA CHAMBER THROUGH SAID OTHER OPEN END TO A PRESSURIZABLE CHAMBER, SAID VALVING ELEMENT HAVING A SECOND POSITION FFOR ALLOWING EXHAUUST OFF PRESSURIZED FLUIDD FROM THE PRES-SURIZABLE CHAMBER INTO SAID INTERNAL CHAMBER AND A THIRD POSITION CLOSING SAID OTHER OPEN END AGAINST EXHAUST OF POSITION CLOSING SAID OTHER OPEN END AGAINST EXHAUST OF THE INTERNAL CHAMBER UPON THE OCCURENCE OF THE PREDETERMINED MINIMUM PRESSURE VALUE IN THE PRESSURIZABLE CHAMBER.