Mounting means for bladder of pressure vessel

Claim 1

IN A PRESSURE VESSEL OF THE TYPE HAVING A RIGID CONTAINER WITH A PORT AND A DEFORMABLE BLADDER OF RESILIENT MATERIAL, SAID BLADDER HAVING A MOUTH WITH INTURNED ANNULAR RIM, THE COMBINATION THEREWITH OF CLAMPING MEANS TO SECURE THE BLADDER IN THE CONTAINER, SAID CLAMPING MEANS COMPRISING A DISC HAVING A STEM RISING THEREFROM AND ADAPTED TO EXTEND THROUGH SUCH PORT, MEANS COACTING WITH THE EXTENDING PORTION OF SAID STEM TO MOVE SAID CLAMPING MEANS OUTWARDLY, A LOCKING RING ENCOMPASSING THE STEM, AT LEAST A PORTION OF SAID LOCKING RING BEING ENCOMPASSED BY THE RIM OF SAID PARTITION, SAID RING COACTING WITH SAID STEM AND SAID DISC SECURELY TO RETAIN SAID RIM PORTION IN FIXED POSITION WHEN SAID CLAMPING MEANS IS MOVED UTWARDLY THEREBY CLAMPING SAID RIM, SAID DISC HAVING A PERIPHERAL UPSTANDING RIM DEFINING THE GUIDE MEANS AND AN ANNULAR GROOVE BETWEEN THE PERIPHERAL RIM AND THE STEM DEFINING AN ANNULAR SHOULDER ADJACENT THE STEM ON WHICH THE PORTION OF THE LOCKING RING ADJACENT ITS INNER PERIPHERY IS ADAPTED TO SEAT, THE PORTION OF SAID STEM EXTENDING THROUGH THE PORT IN SAID CONTAINER BEING EXTERNALLY THREADED, THE HEIGHT OF SAID LOCKING RING BEING LESS THAN THAT OF SAID RIM WHEN UNCOMPRESSED, WHEREBY WHEN SAID BLADDER RIM IS COMPRESSED THE UPPER SURFACE OF SAID LOCKING RING WILL ABUT AGAINST THE WALL OF SAID CONTAINER TO LIMIT THE DEGREE OF COMPRESSION OF SAID BLADDER RIM, SAID PERIPHERAL RIM BEING SPACED FROM THE WALL OF SAID CONTAINER WHEN SAID LOCKING RING ABUTS THEREAGAINST BY A DISTANCE SUBSTANTIALLY EQUAL TO THE THICKNESS OF THE BLADDER WALL OUTWARDLY OF THE RIM OF THE BLADDER, THE OUTER PERIPHERY OF SAID LOCKING RING AT ITS END EXTENDING LATERALLY OUTWARD BEYOND THE INNER WALL OF SAID GROOVE TO DEFINE A RECESS THEREBENEATH, THE FREE END OF SAID BLADDER RIM DEFINING A BEAD ADAPTED TO BE FORCED INTO SAID RECESS WHEN PRESSURE IS APPLIED TO SAID BEAD, THE ANNULAR SHOULDER BEING IN A PLANE CLOSER TO THE UNDERSURFACE OF SAID DISC THAN THE PLANE OF THE END OF SAID PERIPHERAL RIM.