Funnel structure for introducing anti-freeze to radiators

Claim 1

A FUNNEL FOR INTRODUCING ANTI-FREEZE SOLUTION THROUGH THE NECK OF A RADIATOR THAT INCLUDES AN OVERFLOW PIPE AND A GASKET SEAT SPACED BELOW THE UPPER EDGE OF THE RADIATOR NECK, SAID FUNNEL COMPRISING, IN COMBINATION, A RADIATOR CAP ADAPTED FOR SCREWTYPE SECUREMENT TO THE NECK OF SAID RADIATOR, A FUNNEL STRUCTURE SECURED TO AND PROJECTING THROUGH SAID RADIATOR CAP AND DEFINING A DISCHARGE SPOUT FOR EXTENDING INTO SAID RADIATOR, AN AXIALLY ELONGATED GASKET SLEEVE SURROUNDING AND ENGAGING SAID SPOUT AND ENGAGING SAID RADIATOR CAP, SAID SLEEVE BEING ADAPTED TO COACT WITH AND BE COMPRESSED AXIALL Y BETWEEN THE RADIATOR CAP AND SAID GASKET SEAT FOR SEALING THE INTERIOR OF SAID RADIATOR FROM BOTH SAID NECK AND SAID OVERFLOW PIPE, A VALVE SEAT DEFINED IN SAID FUNNEL STRUCTURE AND ABOVE THE POINT OF SECUREMENT OF THE FUNNEL STRUCTURE TO THE RADIATOR CAP, A VALVE DISC POSITIONED WITHIN THE SAID FUNNEL AND ABOVE SAID VALVE SEAT AND ADAPTED TO COOPERATED WITH SAID VALVE SEAT, A STEM EXTENDING VERTICALLY UPWARD FROM SAID VALVE DISC, MEANS FOR GUIDING SAID STEM FOR PIVOTABLE MOVEMENT THEREIN AND FOR VERTICAL SLIDING MOVEMENT RELATIVE TO SAID FUNNEL AND AXIALLY OF SAID VALVE SEAT, SPRING MEANS NORMALLY BIASING SAID VALVE DISC VERTICALLY DOWNLWARD TOWARD SEALING ENGAGEMENT WITH SAID VALVE SEAT, WHEREBY WHEN THE VALVE DISC IS SEATED WITH LIQUID IN THE FUNNEL, THE FORCES OF BOTH THE SPRING AND THE PRESSURE OF LIQUID ABOVE THE VALVE DISC ALL COOPERATE TOWARD BIASING THE VALVE DISC FOR SEALING AND SEATING ONTO THE VALVE SEAT, A LATCH FOR SELECTIVELY MAINTAINING SAID VALVE DISC IN THE OPEN POSITION AND BEING SELECTIVELY OPERABLE WITH PIVOTING OF THE STEM ABOUT ITS AXIS, AND VENT MEANS CARRIED BY THE FUNNEL AND DEFINING AN OPENING THEREFOR ADJACENT THE LOWER TERMINUS OF THE DISCHARGE SPOUT.