Filling nozzle

Claim 1

A VACUUM ACTUATED FILLING NOZZLE FOR FILLING CONTAINERS WITH LIQUID SUPPLIED AT PRESSURE ABOVE ATMOSPHERIC COMPRISING A VALVE BODY HAVING A BORE THEREIN, A FILLING NOZZLE BODY SLIDABLE IN SAID BORE OF SAID VALVE BODY AND HAVING A LIQUID FILLING PASSAGEWAY AND A VACUUM PASSAGEWAY THEREIN, SAID VACUUM PASSAGEWAY TERMINATING IN A VACUUM PORT, SAID FILLING PASSAGEWAY TERMINATING IN A FILLING PORT, SAID FILLING PORT AND SAID VACUUM PORT BEING LOCATED IN THE PORTION OF THE FILLING NOZZLE BODY ADAPTED TO BE PROJECTED INTO A CONTAINER TO BE FILLED, A LIQUID CONDUIT AND A VACUUM CONDUIT EACH CONNECTED TO SAID VALVE BODY AND IN COMMUNICATION WITH SAID LIQUID FILLING PASSAGEWAY AND VACUUM PASSAGEWAY RESPECTIVELY WHEN SAID FILLING NOZZLE BODY IS IN THE LIQUID FILLING POSITION, A PRIMARY VALVE RESILIENTLY URGED TO NORMALLY PREVENT FLOW FROM SAID LIQUID CONDUIT TO SAID LIQUID FILLING PASSAGEWAY AND BEING OPENED BY MOVEMENT OF SAID FILLING NOZZLE BODY IN SAID BORE OF SAID VALVE BODY, A RESILIENTLY URGED SEPARATELY OPERABLE SECONDARY VALVE IN SERIES WITH SAID PRIMARY VALVE, SAID SECONDARY VALVE BEING NORMALLY CLOSED AND BEING OPENED UNDER THE FORCE OF A DIFFERENTIAL OF LIQUID PRESSURE ACTING ON ONE SIDE AND VACUUM ON THE OTHER, AND A VENT PROVIDING COMMUNICATION BETWEEN A FIRST BLEEDER OPENING ADJACENT THE PORTION OF SAID FILLING NOZZLE BODY ADAPTED TO BE PROJECTED INTO THE CONTAINER TO BE FILLED AND A SECOND BLEEDER OPENING EXPOSED TO THE ATMOSPHERE, SAID VENT COMPRISING A PASSAGEWAY HAVING A CROSS-SECTIONAL AREA AT ITS MOST CONSTRICTED POINT WHICH IS SUBSTANTIALLY SMALLER THAN THE SMALLEST CROSS-SECTIONAL AREA OF SAID VACUUM PASSAGEWAY WHEREBY GAS FLOW THROUGH SAID VENT IS MORE RESTRICTED THAN GAS FLOW THROUGH SAID VACUUM PASSAGEWAY.