Clutch having thrust bearing operated through a universal joint

Claim 1

IN A CLUTCH RELEASE SYSTEM COMPRISING A FIRST SHAFT HAVING AN AXIS OF ROTATION, A SECOND SHAFT, A CLUTCH INTERPOSED BETWEEN THE SHAFTS AND DECLUTCHING LEVERS OR THE EQUIVALENT MOUNTED ON THE CLUTCH, AN ASSEMBLY CONSISTING OF A SUPPORT, A DECLUTCHING FORK CONTAINED IN A PLANE CONTAINING SAID AXIS OF ROTATION OF THE FIRST SHAFT, THE FORK HAVING TWO BRANCHES LOCATED RESPECTIVELY ON OPPOSITE SIDES OF SAID PLANE, MEANS PIVOTALLY MOUNTING THE FORK ON THE SUPPORT SO THAT THE FORK IS PIVOTABLE IN SAID PLANE TOWARD THE LEVERS FOR DECLUTCHING, A THRUST ROLLING BEARING INTERPOSED BETWEEN THE LEVERS AND THE BRANCHES OF THE FORK, AND ENCOMPASSING THE FIRST SHAFT IN FLOATING RELATION TO THE FIRST SHAFT AND MOVABLE AXIALLY OF THE FIRST SHAFT BETWEEN A CLUTCHING POSITION AND A DECLUTCHING POSITION, THE BEARING COMPRISING: A FIRST RACE-CARRYING ELEMENT AND A SECOND RACE-CARRYING ELEMENT WHICH ARE RELATIVELY ROTATABLE AND RELATIVELY RADIALLY MOVABLE, THE FIRST ELEMENT HAVING AN ANNULAR PROJECTING PORTION INTEGRAL WITH AND PROJECTING FROM THE FIRST ELEMENT TOWARD THE DECLUTCHING LEVERS, SAID PROJECTING PORTION BEING IN DIRECT ENGAGEMENT WITH THE LEVERS IN SAID DECLUTCHING POSITION OF THE BEARING MEANS OPERATIVELY AND PIVOTALLY CONNECTING THE SECOND ELEMENT TO THE BRANCHES OF THE FORK SO THAT THE SECOND ELEMENT IS PIVOTABLE ABOUT A FIRST AXIS SUBSTANTIALLY PERPENDICULAR TO SAID PLANE AND SUBSTANTIALLY INTERSECTING SAID AXIS OF ROTATION AND MEANS WHEREBY THE THRUST BEARING IS FREE WHEN DECLUTCHING TO PIVOT RELATIVE TO THE FORK ABOUT AS SECOND AXIS SUBSTANTIALLY CONTAINED IN SAID PLANE AND SUBSTANTIALLY PARALLEL TO THE PLANE OF THE ANNULAR PROJECTION PORTION AND THE THRUST EXERTED BY THE DECLUTCHING FORK ON THE THRUST BEARING WHEN DECLUTCHING ACTS IN SAID PLANE OF THE FORK.