Rotatable high pressure fluid fitting

Claim 1

IN COMBINATION, A WORK PIECE HAVING A THREADED BORE WITH A COUNTERBORE AT ITS UPPER END AND INCLUDING AN UPWARDLY AND RADIALLY OUTWARDLY INCLINED BOTTOM WALL BETWEEN SAID BORE AND COUNTERBORE AND A SMOOTH CIRCUMFERENTIAL WALL SURFACE ADJACENT SAID INCLINED BOTTOM WALL; AND AN INSERT, COMPRISING: A TUBULAR STUD HAVING EXTERNAL THREADS ENGAGED WITH THE THREADS OF SAID BORE, A FIRST ANNULAR GROOVE PROVIDED IN SAID STUD, SAID GROOVE POSITIONED SO AS TO BE OPPOSITE SAID SMOOTH WALL PORTION OF SAID BORE AFTER FULLY THREADING SAID STUD INTO SAID BORE; AN INTEGRAL RADIAL FLANGE PROJECTING OUTWARDLY FROM SAID STUD, SAID FLANGE HAVING A PORTION OF THE PERIPHERAL FACE THEREOF BEVELED AND THE REMAINING PORTION OF SAID PERIPHERAL FACE PROVIDED WITH LONGITUDINAL SERRATIONS, SAID BEVELED PORTION OF SAID FLANGE FACE HAVING A CIRCUMFERENTIALLY CONTINUOUS SEALING SURFACE THEREON AND SAID SEALING SURFACE BEING SEATED IN TIGHT SEALING ENGAGEMENT WITH SAID INCLINED BOTTOM WALL OF SAID BORE; AN EXTERNALLY AND INTERNALLY SERRATED LOCKING RING RECEIVED IN SAID COUNTERBORE, SAID INTERNAL SERRATIONS BEING IN ENGAGEMENT WITH THE EXTERNAL SERRATIONS OF SAID STUD FLANGE, SAID EXTERNAL SERRATIONS OF SAID LOCKING RING BEING PRESSED INTO THE WORKPIECE ADJACENT SAID COUNTERBORE, SO AS TO LOCK SAID STUD FROM ROTATIONAL MOVEMENT RELATIVE TO SAID WORKPIECE, SAID STUD BEING PROVIDED WITH A SMOOTH WALL PORTION AND A SECOND ANNULAR GROOVE ON THE OPPOSITE SIDE OF THE FLANGE FROM SAID FIRST ANNULAR GROOVE, SECOND THREADS SITUATED ON SAID STUD ON THE OPPOSITE SIDE OF THE FLANGE FROM FIRST THREADS, SAID SECOND THREADS HAVING A THREAD PITCH LESS THAN THE THREAD PITCH OF SAID FIRST THREADS; A HEAD ROTATABLY MOUNTED ON SAID STUD, A SMOOTH CIRCUMFERENTIAL WALL PORTION EXTENDING INWARDLY FROM ONE END THEREOF, SAID HEAD BEING PROVIDED WITH INTERNAL THREADS ADJACENT SAID WALL PORTION ENGAGEABLE WITH SAID SECOND THREADS OF SAID STUD, THE SAID WALL PORTION OF SAID HEAD EXTENDING OVER AND BEYOND THE SECOND ANNULAR GROOVE OF SAID STUD AFTER SAID HEAD IS IN THREADED ENGAGEMENT WITH SAID STUD, SAID HEAD HAVING THE AXIS OF A PORTION THEREOF IN A PLANE ON AN ANGLE RELATIVE TO THE AXIS OF SAID STUD; AND SEALING MEANS POSITIONED IN SAID FIRST AND SAID SECOND ANNULAR GROOVES, RESPECTIVELY.