Dispensing valve for squeezable tubes

Claim 1

THE COMBINATION WITH A SQUEEZABLE CONTAINER ADAPTED TO CONTAIN A MATERIAL TO BE DISPENSED AND HAVING A NECK THROUGH WHICH SAID MATERIAL IS ADAPTED TO BE DISPENSED UPON DEFORMING OF SAID CONTAINER, SAID CONTAINER BEING FABRICATED OF A RESILIENT MATERIAL WHICH IS DEFORMED UPON THE APPLICATION OF A SQUEEZING PRESSURE AND WHICH TENDS TO RETURN OT ITS INITIAL SHAPE UPON RELEASE OF SAID SQUEEZING PRESSURE THEREBY CREATING A PARTIAL VACUUM IN SAID CONTAINER WHICH TENDS TO DRAW AIR THROUGH AND NECK AND INTO SAID CONTAINER, OF A ONE-WAY VALVE IN SAID NECK ARRANGED TO PERMIT DISPENSATION OF SAID MATERIAL THROUGH SAID NECK IN RESPONSE TO THE APPLICATION OF SAID SQUEEZING PRESSURE AND TO PRECLUDE THE DRAWING OF AIR INTO SAID CONTAINER UPON RELEASING OF SAID SQUEEZING PRESSURE, SAID ONE-WAY VALVE INCLUDING A HOLLOW VALVE BODY DISPOSED IN THE NECK OF SAID CONTAINER AND HAVING A RECTANGULAR THROUGH BORE FOR THE DISPENSATION OF SAID MATERIAL AND BEING FORMED WITH A VALVE SEAT AT ONE END OF SAID THROUGH BORE AND AN ANNULAR FLANGE AT THE OTHER END THREOF, A VALVE BALL DISPOSED WITHIN SAID THROUGH BORE AND NORMALLY ENGAGING SAID VALVE SEAT FOR CLOSING SAID THROUGH BORE TO PRECLUDE DISPENSATION OF SAID MATERIAL THERETHROUGH, AND A SPRING DISPOSED WITHIN SAID THROUGH BORE SEATED AT ONE END AGANIST THE SAID ANNULAR FLANGE AND ITS OTHER END AGANIST THE SAID VALVE BALL TO LIMIT THE MOVEMENT OF SAID VALVE BALL FROM THE VALVE SEAT WHILE PERMITTING THE DISPENSATION OF MATERIAL THROUGH THE OPENING OF SAID ANNULAR FLANGE, SAID VALVE BALL MOVING OUT OF ENGAGEMENT WITH SAID VALVE SEAT IN RESPONSE TO THE APPLICATION OF SAID SQUEEZING PRESSURE TO SAID CONTAINER AND THE PARTIAL VACUUM CREATED WITHIN SAID CONTAINER INCIDENT TO ITS DEFORMATION BEING EFFECTIVE TO CAUSE SAID VALVE BALL TO RETURN INTO ENGAGEMENT WITH SAID VALVE SEAT UPON RELEASE OF SAID SQUEEZING PRESSURE, THE RETURN OF SAID VALVE BALL INTO ENGAGEMENT WITH SAID VALVE SEAT PRECLUDING THE DRAWING OF AIR INTO SAID CONTAINER AND MAINTAINING SAID CONTAINER IN A DEFORMED STATE.