Nozzle construction for filling machines and the like

Claim 1

A GRAVITY-FEED, NONDRIP NOZZLE FOR USE IN SUBSUR, FACE FILLING OF A SERIES OF CONTAINERS WITH EXTREMELY DANGEROUS FLUIDS, COMPRISING: (1) A SUPPORT HOUSING CONNECTED TO A SOURCE OF SAID FLUIDS, (2) INNER AND OUTER TELESCOPING CYLINDRICAL MEMBERS ADAPTED TO UNDERGO RELATIVE MOVEMENT UPON INSERTION WITHIN ONE OF SAID CONTAINERS, SAID INNER MEMBER ATTACHED AT ONE END THEREOF TO SAID SUPPORT HOUSING AND HAVING A SIDE WALL AND END WALL REMOTE THEREFROM CONTAINING AT LEAST ONE FLUID OUTPUT PORT AND ONE VENT PORT RESPECTIVELY, SAID OUTER MEMBER SLIDEABLY ATTACHED CONCENTRIC OF SAID INNER MEMBER, AND LOCATED IN A NORMALLY SPRING-BIASED, SEALING POSITION ABOUT SAID FLUID PORT OF SAID INNER MEMBER PRIOR TO INSERTION WITHIN SAID CONTAINER, (3) MEANS LOCATED WITHIN SAID INNER MEMBER IN FLUID CONTACT WITH SAID VENT PORT OF SAID INNER MEMBER WHEREBY REDUCED PRESSURE WITHIN SAID MEANS DRAWS FLUID DROPLET AT THE EXTERIOR OF THE NOZZLE INTO SAID INNER MEMBER, DURING TRANSFERENCE OF SAID NOZZLE FROM CONTAINER TO CONTAINER, SAID CONNECTING MEANS INCLUDING FIRST AND SECOND CONDUIT SECTIONS LOCATED WITHIN SAID MEMBER AND MOVABLE THEREWITH AND AN ARCUATE SLOT FORMED AT THE INTERIOR SURFACE OF SAID OUTER MEMBER BUT EXTERIOR OF SAID INNER MEMBER, SAID FIRST AND SECOND SECTIONS HAVING ADJACENT ENDS ADJUSTABLY TERMINATING IN CONTACT WITH SAID SLOT AT LOCATIONS CIRCUMFERENTIALLY SPACED THEREABOUT, AND (4) MEANS RESPONSIVE TO THE RELATIVE MOVEMENT OF SAID INNER AND OUTER MEMBERS UPON INSERTION OF THE NOZZLE WITHIN SAID CONTAINER DURING FILLING OF SAID CONTAINER FOR INTERRUPTING FLUID CONTACT BETWEEN SAID ADJACENT ENDS OF SAID FIRST AND SECOND CONDUIT SECTIONS AND SAID ARCUATE SLOT, SAID ADJACENT ENDS BEING AXIALLY SPACED FROM SAID SLOT IN RESPONSE TO THE RELATIVE MOVEMENT OF SAID INNER AND OUTER MEMBERS, SAID INTERRUPTING MEANS ADAPTED TO FORM A SEAL BETWEEN SAID AXIALLY SPACED SLOT AND SAID ADJACENT ENDS.