Windshield wiper linkage

Claim 1

IN A WINDSHIELD WIPER LINKAGE CONSTRUCTION COMPRISING A LINK ELEMENT HAVING A PERFORATION AND A LEVER ELEMENT CONNECTED THERETO FOR ARTICULATED MOOVEMENT; THE COMBINATION COMPRISING A BALL AND SOCKET TYPE JOINT CONNECTING SAID LINK AND LEVER INCLUDING AN INTERNAL SOCKET BEARING ASSEMBLY AND A BALL STUD, SAID SOCKET BEARING ASSEMBLY COMPRISING A POROUS LUBRICANT-RETAINING SOCKET MEMBER HAVING A PORTION THEREOF DISPOSED IN SAID PERFORATION FOR PROVIDING A MATING FIT THEREWITH, SAID PORTION HAVING AN OPENING AND A CAP PLATE INCLUDING A CONCAVE INTERNAL BEARING SURFACE DISPOSED ADJACENT SAID SOCKET MEMBER TO FORM A CONCAVE SPHERICAL INTERNAL BEARING SURFACE FOR RECEIVING SAID BALL STUD, SAID SOCKET MEMBER AND SAID CAP PLATE HAVING MATING ANNULAR PORTIONS FOR MAINTAINING SAID SOCKET ELEMENT AND CAP PLATE IN ALIGNMENT, SAID BALL STUD COMPRISING A STUD PORTION EXTENDING THROUGH SAID OPENING AND ADAPTED TO BE SECURED TO SAID LEVER, A FIRST PARTIAL SPHERICAL SECTION DISPOSED IN SAID SOCKET MEMBER AND EXTENDING INTO SAID CONCAVE INTERNAL SURFACE AND A SECOND PARTIAL SPHERICAL SECTION MATING WITH SAID FIRST PARTIAL SPHERICAL SECTION TO FORM A SPHERICAL BALL STUD, SAID SECOND SECTION ENGAGING SAID CONCAVE INTERNAL BEARING SURFACE OF SAID CAP PLATE AND BEING OF POROUS LUBRICANTRETAINING MATERIAL.