Springless firing valve

Claim 2

IN COMBINATION, A VALVE CHAMBER HAVING A HEAD AND A SEAT, A VALVE ELEMENT (37) RECIPROCABLE IN SAID CHAMBER, A STATIONARY MEMBER FIXED IN SAID CHAMBER AND HAVING A FIRST PORTION (33) OF A GIVEN DIAMETER, SAID VALVE ELEMENT HAVING A BORE (37A) IN ONE END THEREOF TO RECEIVE SAID FIRST PORTION, SAID STATIONARY MEMBER HAVING A SECOND PORTION (34) OF A DIFFERENT DIAMETER, AND SAID VALVE ELEMENT HAVING ANOTHER BORE (37B) IN THE OTHER END THEREOF TO RECEIVE SAID SECOND PORTION, THE DIAMETER OF SAID FIRST MENTIONED BORE BEING DIFFERENT THAN THE DIAMETER OF SAID SECOND MENTIONED BORE, AND THE EFFECTIVE OUTSIDE DIAMETER OF AID VALVE ELEMENT BEING CONSTANT THROUGHOUT, WHEREBY WHEN FLUID POWER OF EQUAL PRESSURE IS APPLIED TO BOTH OF SAID ENDS OF SAID VALVE ELEMENT AT A TIME WHEN SAID PORTIONS OCCUPY THEIR RESPECTIVE BORES, SAID VALVE ELEMENT WILL MOVE UNDER THE INFLUENCE OF THE FLUID POWER APPLIED AT THAT END OF SAID VALVE ELEMENT HAVING THE SMALLER BORE THEREIN.

Claim 3

THE COMBINATION OF CLAIM 1 IN WHICH SAID STATIONARY MEMBER IS PROVIDED WITH A PASSAGE THERETHROUGH TO ATMOSPHERE, SAID STATIONARY MEMBER ALSO BEING PROVIDED WITH ORIFICES EXTENDING FROM THE OUTSIDE OF SAID STATIONARY MEMBER TO SAID PASSAGE, SAID ORIFICES BEING LOCATED INTERMEDIATE SAID SECOND PORTION AND SAID HEAD, SEALING MEANS (40) IN SAID VALVE ELEMENT ADAPTED TO ENGAGE SAID STATIONARY MEMBER WHEN SAID VALVE ELEMENT IS MOVED TOWARD AI DHEAD, AND A SEALING MEMBER (41) ON SAID VALVE ELEMENT, THE PERIPHERAL EDGE AT LEAST OF SAID SEALING MEMBER (41) BEING MOVABLE WITH RESPECT TO SAID VALVE ELEMENT, THE STATIONARY MEMBER (33-34), SEALING MEMBER (41) AND SEALING MEANS (40) BEING ARRANGED SO THAT WHEN SAID SEALING MEMBER (41) IS ON SAID SEAT, SAID SEALING MEANS (40) IS NORMALLY FREE OF SAID STATIONARY MEMBER; INITIAL MOVEMENT OF SAID VALVE ELEMENT TOWARDS SAID HEAD BRINGING SAID SEALING MEANS (40) INTO SEALING ENGAGEMENT WITH SAID STATIONARY MEMBER WHILE SAID SEALING MEMBER (41) REMAINS ON SAID SEAT; FURTHER MOVEMENT OF SAID VALVE ELEMENT TOWARD SAID HEAD SERVING TO LIFT SAID SEALING MEMBER (41) OFF SAID SEAT; AND WHEREBY WHEN SAID SEALING MEANS (40) IS ENGAGED WITH SAID STATIONARY MEMBER AND SAID SEALING MEMBER (41) IS OFF SAID SEAT, INITIAL MOVEMENT OF SAID VALVE ELEMENT TOWARD SAID SEAT WILL BRING SAID SEALING MEMBER (41) INTO CONTACT WITH SAID SEAT WHILE SAID SEALING MEANS (40) REMAINS ENGAGED WITH SAID STATIONARY MEMBER, FURTHER MOVEMENT OF SAID VALVE ELEMENT TOWARD SAID VALVE SEAT SERVING TO BRING SAID SEALING MEANS (40) OUT OF ENGAGEMENT WITH SAID STATIONARY MEMBER WHILE MAINTAINING SAID SEALING MEMBER (41) ON SAID SEAT.