Disposable drip-free dispensing valve

Claim 1

A DISPOSABLE DRIP-FREE DISPENSING VALVE ADAPTED FOR CONNECTION WITH A CONTAINER TO CONTROL THE GRAVITY DISCHARGE OF A FLUID THEREFROM, COMPRISING A RIGID VALVE BODY INCLUDING A NORMALLY VERTICAL TRANSVERSE WALL, AND A FRUSTOCONICAL VALVE SEAT DIVERGING OUTWARDLY RELATIVE TO SAID TRANVERSE WALL AND COOPERATING THEREWITH TO AT LEAST PARTIALLY DEFINE A VALVE CHAMBER, SAID TRANSVERSE WALL CONTAINING A CENTRALLY ARRANGED OPENING AND SAID VALVE SEAT CONTAINING A DOWNWARDLY DIRECTED DISCHARGE PASSAGE THE UPPER END WHICH COMMUNICATES WITH SAID VALVE CHAMBER; A RESILIENT FRUSTOCONICAL VALVE ELEMENT ARRANGED IN SAID VALVE CHAMBER FOR SEATING ENGAGEMENT WITH SAID VALVE SEAT TO CLOSE SAID DISCHARGE PASSAGE, SAID VALVE SEAT AND SAID VALVE ELEMENTS HAVING A COMMON HORIZONTAL AXIS; AND MEANS BIASING SAID VALVE ELEMENT TOWARD A CLOSED POSITION RELATIVE TO SAID SEAT, COMPRISING A RESILIENT DIAPHRAGM CONNECTED WITH SAID VALVE BODY ON THE OPPOSITE SIDE OF SAID TRANSVERSE WALL FROM SAID VALVE ELEMENT AND CONNECTING MEANS EXTENDING THROUGH SAID WALL OPENING FOR RIGIDLY CONNECTING SAID VALVE ELEMENT WITH SAID DIAPHRAGM, SAID DIAPHRAGM BEING SECURED TO SAID VALVE BODY IN SPACED RELATION TO SAID TRANSVERSE WALL TO DEFINE THEREBETWEEN AN AUXILIARY CHAMBER, SAID VALVE BODY CONTAINING MEANS AFFORDING CONTINUOUS COMMUNICATION BETWEEN SAID VALVE CHAMBER AND SAID AUXILIARY CHAMBER.