Universal joint for tube sections of a fluid line

Claim 1

A UNIVERSAL JOINT COMPRISING A TUBE, A CIRCUMFERENTIALLY CONTINUOUS BAND CLOSELY FITTED AROUND THE OUTSIDE OF THE TUBE AND HAVING TWO ANNULAR END FLANGES PROJECTING RADIALLY OUTWARD FROM THE TUBE, THAT PORTION OF THE BAND BETWEEN ITS END FLANGES BEING SHAPED SIMILARLY TO THE ADJACENT PORTION OF THE TUBE AND BEING BONDED TO THE TUBE TO MAKE THE BONDED PORTIONS OF THE BAND AND TUBE OF LAMINATED STRUCTURE, THE LAMINATED PORTION BEING CUT ALONG A CIRCUMFERENTIALLY EXTENDING AND CURVINGLY UNDULATING CONTOUR TOO DIVIDE THE TUBE AND BAND INTO TWO TUBE SECTIONS WITH EACH TUBE SECTION HAVING A PAIR OF DIAMETRICALLY OPPOSED JAWS DISPOSED MEDIALLY BETWEEN A PAIR OF DIAMETRICALLY OPPOSED RECESSES, SAID JAWS AND RECESSES BEING DEFINED BY SAID UNDULATING CONTOUR, THE JAWS OF EACH TUBE SECTION EXTENDING INTO RESPECTIVE RECESSES OF THE OTHER TUBE SECTION, THE TUBE SECTIONS BEING SEPARATED BY A GAP, A GIMBAL RING DISPOSED COAXIALLY OF THE FOUR JAWS AND SPACED SLIGHTLY FROM THE SURFACES OF THE JAWS TO ALLOW FREE RELATIVE MOVEMENT BETWEEN THE JAWS AND THE RING, FOUR RADIALLY EXTENDING PIVOT PINS SPACED AT 90* INTERVALS CIRCUMFERENTIALLY OF THE RING AND PIVOTALLY CONNECTING THE RING TO THE JAWS RESPECTIVELY, SAID PIVOT PINS EACH EXTENDING THROUGH BOTH LAMINATIONS OF THE RESPECTIVE JAWS, AND A SLEEVE OF FLEXIBLE MATERIAL SURROUNDING AND SPACED OUTWARDLY FROM SAID JAWS AND RECESSES AND EXTENDING AXIALLY BEYOND SAID GAP, THE ENDS OF THE SLEEVE BEING SECURED CIRCUMFERENTIALLY AND FLUID-TIGHT TO RESPECTIVE END FLANGES.