Valve-type metering dispenser

Claim 1

IN COMBINATION WITH A FLOWABLE MATERIAL CONTAINER HAVING A NECK, A MEASURING DEVICE COMPRISING A CLOSURE ELEMENT MEANS SLIDABLY RECEIVED WITHIN SAID NECK, A VALVE ELEMENT MEANS RESILIENTLY MOVABLE SOLELY BY CREATING PRESSURE WITHIN SAID CONTAINER, MEANS CONNECTING SAID CLOSURE ELEMENT MEANS TO SAID VALVE ELEMENT MEANS FOR MOVEMENT THEREWITH, SAID VALVE ELEMENT MEANS BEING ARRANGED TO PERMIT FLOW OF SAID MATERIAL THERETHROUGH IN ITS REST POSITION BUT TO STOP SAID FLOW WHEN SAID VALVE ELEMENT MEANS IS MOVED BY PRESSURE FROM WITHIN SAID CONTAINER, SAID CLOSURE ELEMENT MEANS BEING SO POSITIONED WITH RESPECT TO SAID VALVE ELEMENT MEANS AS TO PERMIT FLOW OF SAID MATERIAL OUT OF SAID NECK UPON FURTHER MOVEMENT OF SAID VALVE ELEMENT MEANS, SAID CLOSURE ELEMENT MEANS BEING MOVABLE BY INCREASED PRESSURE IN SAID CONTAINER ACTING UPON SAID CLOSURE ELEMENT MEANS TO MOVE SAID CONNECTING MEANS AND THEREBY MOVE SAID VALVE ELEMENT MEANS INTO A CLOSED POSITION, AND SAID VALVE ELEMENT MEANS BEING FURTHER SHIFTABLE IN ITS CLOSED POSITION BY FURTHER PRESSURE IN SAID CONTAINER ACTING ON SAID VALVE ELEMENT MEANS TO SHIFT SAID CONNECTING MEANS AND THEREBY SHIFT SAID CLOSURE ELEMENT MEANS OUT OF SAID NECK FOR DISCHARGE OF LIQUID IN SAID NECK.