Adjustable plumbing fittings

Claim 1

IN A PLUMBING FITTING, AN ADJUSTABLE CONNECTION FOR USE BETWEEN A FLUSH VALVE AND A CONTROL VALVE TO COMPENSATE FOR VARIATIONS IN THE RELATIVE POSITION OF THE VALVES, SAID CONNECTION COMPRISING A TUBULAR FITTING THREADED AT ONE END INTO THE FLUSH VALVE AND HAVING ITS OTHER END SLIDABLY AND ADJUSTABLY INSERTED IN THE OUTLET END OF SAID CONTROL VALVE TO A POSITION DEPENDING UPON THE RELATIVE DISTANCE BETWEEN THE VALVES, THE ADJACENT WALLS OF SAID TUBULAR FITTING AND SAID CONTROL VALVE BEING SLIGHTLY SPACED APART, THE END OF SAID FITTING HAVING SPACED APART FLANGES FORMED THEREON EXTENDING OUTWARD FROM THE SIDE OF SAID FITTING INTO CLOSE PROXIMITY TO THE WALLS OF SAID CONTROL VALVE, AN O-RING RECESSED IN SAID FITTING BETWEEN SAID FLANGES AND IN SLIDABLE LEAK-PROOF CONTACT WITH THE WALLS OF SAID CONTROL VALVE, A LOCKING RING AROUND SAID FITTING SLIDABLE THEREON AND CLOSELY EMBRACING THE SAME AND BRIDGING THE SPACE BETWEEN SAID FITTING AND SAID CONTROL VALVE, SAID LOCKING RING HAVING A SHARP EDGE IN SLIDABLE CONTACT WITH SAID FITTING, A COUPLING NUT THREADED UPON THE OUTSIDE OF SAID CONTROL VALVE OUTLET AND HAVING A CLAMPING EDGE PORTION CLOSELY SLIDABLE ALONG THE OUTSIDE SURFACE OF SAID FITTING, SAID CLAMPING NUT ADAPTED TO SLIDE AND FORCE SAID LOCKING RING ALONG SAID FITTING INTO ENGAGEMENT WITH THE END OF SAID CONTROL VALVE OUTLET TO A POSITION ON SAID FITTING DEPENDING UPON THE RELATIVE DISTANCE BETWEEN THE FLUSH VALVE AND CONTROL VALVE, THE CONTACTING SURFACE BETWEEN SAID LOCKING RING AND WITH SAID COUPLING NUT AND THE END OF SAID CONTROL VALVE OUTLET BEING TAPERED WHEREBY TIGHTENING OF SAID COUPLING NUT FORCES THE SHARP EDGE OF SAID LOCKING RING INTO BITING AND LOCKING ENGAGEMENT WITH THE SURFACE OF SAID FITTING, SAID LOCKING RING BRIDGING THE SPACE BETWEEN SAID FITTING AND CONTROL VALVE OUTLET, ONE OF SAID FLANGES ADAPTED TO ENGAGE AND BE STOPPED BY SAID LOCKING RING TO PREVENT OUTWARD SLIDING MOVEMENT AND BLOW-OUT OF SAID FITTING FROM SAID CONTROL VALVE OUTLET, IN CASE SAID COUPLING NUT BECOMES LOOSE UNDER HIGH PRESSURE WHEREBY SAID FITTING REMAINS LOCKED IN SAID CONTROL VALVE OUTLET AND SAID O-RING MAINTAINS A LEAK-PROOF SEAL THEREIN.