Universal ball joint

Claim 1

AN AXIALLY FIXED UNIVERSAL BALL JOINT ARRANGED BETWEEN A DRIVEN SHAFT AND A DRIVING SHAFT, COMPRISING: A BOSS INTEGRAL WITH SAID DRIVING SHAFT, CONVEX FLANKS PROVIDED ON SAID BOSS, A PLURALITY OF RUNNING TRACKS PROVIDED EXTERNALLY ON SAID BOSS, SAID RUNNING TRACKS HAVING A SUBSTANTIALLY SEMI-CIRCULAR CROSS-SECTION AND BEING PARALLEL TO THE LONGITUDINAL AXIS OF SAID SHAFT; A CYLINDRICAL BARREL INTEGRAL WITH SAID DRIVEN SHAFT, A PLURALITY OF RUNNING TRACKS, EQUAL IN NUMBER TO AND HAVING THE SAME CROSSSECTION AS, THE SAID PLURALITY OF TRACKS ON SAID BOSS, PROVIDED INTERNALLY ON SAID BARREL, TO FORM A PLURALITY OF PAIRS OF BALL TRACKWAYS, A BALL ARRANGED FOR ROLLING AND SLIDING MOVEMENT IN EACH SAID TRACKWAY, MEANS TO HOLD SAID BALLS IN SAID TRACKWAYS, AND MEANS COMPRISING A FIRST CONCAVE WASHER ARRANGED ON ONE SIDEOF AND ADAPTED TO CONTACT THE SET OF BALLS AND ONE OF SAID FLANKS AND A SECOND CONCAVE WASHER ARRANGED ON THE OTHER SIDE OF AND ADAPTED TO CONTACT THE SET OF BALLS AND THE OTHER OF SAID FLANKS, A SPHERICAL ZONE PROVIDED IN THE BORE OF SAID BARREL, A FIRST OPERATIVE SPHERICAL SURFACE SITUATED ON THE PERIPHERY OF SAID FIRST WASHER AND HAVING ITS CENTRE IN THE BORE OF THE BARREL AND A FIRST OPERATIVE SPHERICAL SURFACE SITUATED ON THE PERIPHERY OF SAID SECOND WASHER AND HAVING ITS CENTRE IN THE BORE OF THE BARREL, LOCATED IN THE SAID SPHERICAL ZONE PROVIDED IN THE BORE OF SAID BARREL, AND A SECOND OPERATIVE SPHERICAL SURFACE SITUATED ON THAT SIDE OF EACH WASHER IN CONTACT WITH SAID CONVEX FLANK, AND FURTHER WASHERS LOCATED ON SAID DRIVING SHAFT FOR HOLDING SAID CONCAVE WASHERS IN CONTACT WITH THE SAID BALLS AND FLANKS, RESPECTIVELY.