Method of manipulating a cartridgetype ball-joint

Claim 1

IN THE METHOD OF REPLACING A PERMANENTLY ASSEMBLED BALL-JOINT UNIT IN THE EYE OF A CONTROL ARM WITHOUT COMPLETE DISASSEMBLY OF SAID CONTROL ARM, AND WHEREIN SAID UNIT IS OF THE TYPE HAVING A SHELL WHOSE ONE END IS EXTERNALLY CONVEX AND THAT HAS AN OPENING THERETHROUGH THROUGH WHICH THE SHANK OF A STUD PROJECTS OUTWARDLY FROM THE SHELL, THE OTHER END OF SAID SHELL BEING CLOSED AND RADIALLY ENLARGED SO THAT THE SHELL CAN BE INSERTED INTO SAID EYE FROM ONLY ONE DIRECTION, AND WHEREIN SAID BALLJOINT UNITS ARE OF DIFFERING SIZES; SAID METHOD INCLUDING PRESSING AGAINST SAID CONVEX SURFACE OF SAID SHELL IN SUBSTANTIALLY TANGENTIAL AND ANNULAR ENGAGEMENT THEREWITH WHILE SUPPORTING SAID ARM UNTIL SAID UNIT IS DISPLACED FROM SAID EYE, AND THEN REPLACING A LIKE CARTRIDGE UNIT INTO THE EMPTY EYE BY PERIPHERALLY SUPPORTING SAID UNIT AND FORCING THE SAME AXIALLY TOWARD SAID EYE WHILE SO SUPPORTED AND UNTIL THE UNIT ABUTS AGAINST SAID CONTROL ARM ABOUT SAID EYE TO LIMIT FURTHER INSERTION INTO SAID EYE.