Disposable valved spout

Claim 1

A DISPOSABLE VALVED SPOUT FOR A LIQUID DISPENSER CONSISTING OF FOUR ELEMENTS: A TUBULAR HOUSING; A VALVE STEM; A VALVE; AND A SPRING; SAID HOUSING BEING OPEN AT EACH END AND HAVING A SIDE OPENING IN A WALL OF SAID HOUSING INTERMEDIATE THE ENDS THEREOF, SAID HOUSING HAVING A TRANSVERSE WALL BETWEEN ONE END OF SAID HOUSING AND SAID SIDE OPENING, THERE BEING DEFINED WITHIN SAID HOUSING TWO SPACED OPEN ENDED CHAMBERS, ONE CHAMBER BEING GENERALLY CIRCULAR IN CROSS SECTION, SAID TRANSVERSE WALL HAVING A CIRCULAR BORE THERETHROUGH, SAID VALVE STEM BEING CYLINDRICAL AND HAVING A PERIPHERAL CONFIGURATION COMPLEMENTARY TO SAID CIRCULAR BORE AND EXTENDING THROUGH AND BEING SLIDINGLY ENGAGED IN SAID BORE SO AS TO INHIBIT LEAKAGE BETWEEN THE TWO CHAMBERS AROUND THE STEM AND THROUGH THE BORE, SAID VALVE STEM HAVING A TRANSVERSE MEMBER ON ONE END THEREOF, SAID TRANSVERSE MEMBER HAVING A PERIPHERAL CONFIGURATION SUBSTANTIALLY COMPLEMENTARY TO THE CIRCULAR INTERIOR OF SAID ONE CHAMBER IN SAID TUBULAR HOUSING, BUT BEING SLIGHTLY OUT OF ROUND, WHEREBY SAID TRANSVERSE MEMBER IS SLIDABLE IN SAID ONE CHAMBER IN THE HOUSING AND THE TRAPPING OF AIR BETWEEN SAID TRANSVERSE MEMBER AND SAID TRANSVERSE WALL IS PREVENTED, SAID VALVE BEING AFFIXED ON THE OTHER END OF SAID VALVE STEM AND BEING ADAPTED TO ENGAGE A VALVE SEAT DEFINED ADJACENT THE OTHER END OF SAID HOUSING, SAID SPRING BEING A COIL SPRING CONSTRUCTED AND ARRANGED TO BIAS SAID VALVE TO THE CLOSED POSITION AGAINST SAID VALVE SEAT.