Valve coupling for container confining and dispensing fluid medium under pressure

Claim 1

IN APPARATUS OF THE CLASS DESCRIBED, THE COMBINATION OF A CONTAINER FOR CONFINING AND DISPENSING FLUID MEDIUM UNDER PRESSURE HAVING A FIXED ONE-PIECE TOP WALL FORMED WITH AN OPENING SURROUNDED BY AN UPWARDLY AND OUTWARDLY FLARED CONTINUOUS ANNULAR FLANGE INTEGRAL WITH SAID TOP WALL AND PROVIDED WITH INNER AND OUTER WALLS, A VALVE BODY HAVING AN EXTERNALLY THREADED CIRCULAR PORTION PROVIDED WITH A DOWNWARDLY FACING HORIZONTAL ANNULAR SECTION OVERLYING THE UPPER EDGE OF SAID FLANGE AND HAVING A DEPENDING PORTION OF SMALLER DIAMETER THAN SAID CIRCULAR PORTION PROVIDED WITH A VERTICAL ANNULAR SECTION DISPOSED WITHIN SAID FLANGE AND COOPERATING WITH SAID DOWNWARDLY FACING SECTION TO PROVIDE A CONTINUOUS ANNULAR RECESS WITHIN SAID FLANGE, AN ANNULAR SEALING MEMBER IN SAID RECESS AND IN ENGAGEMENT WITH THE INNER WALL OF SAID FLANGE, SAID VERTICAL SECTION AND SAID DOWNWARDLY FACING SECTION, AND A RING HAVING AN INTERNALLY THREADED BORE FOR COOPERATION WITH SAID THREADED CIRCULAR PORTION AND HAVING AN INWARDLY EXTENDING ANNULAR PORTION BELOW SAID INTERNALLY THREADED BORE UNDERLYING SAID CIRCULAR PORTION AND BEING FORMED WITH A DOWNWARDLY AND INWARDLY CONVERGING CONTINUOUS ANNULAR INNER WALL MATCHING THE FLARE OF SAID OUTER FLANGE WALL AND BEING IN ENGAGEMENT WITH SAID OUTER WALL OF SAID FLANGE AND ROTATABLE WITH RESPECT THERETO, WHEREBY UPON ROTATION OF SAID RING FOR SECUREMENT ON SAID VALVE BODY SAID VERTICAL AND HORIZONTAL ANNULAR SECTIONS AND SAID SEALING MEMBER ARE DRAWN DOWNWARDLY TO CAUSE THE UPPER EDGE OF SAID FLANGE TO CONTACT SAID HORIZONTAL ANNULAR SECTION AND TO EFFECT COMPRESSION OF SAID SEALING MEMBER AGAINST SAID INNER FLANGE WALL AND WITHIN SAID RECESS AND THEREBY PROVIDE A SEAL BETWEEN SAID CONTAINER OPENING AND SAID VALVE BODY WITHOUT INWARD FLEXING OF SAID FLANGE.