Ball bearing lead screw follower

Claim 1

A FOLLOWER FOR A BALL-TYPE LEAD SCREW OF PREDETERMINED DIAMETER HAVING A HELICAL BALL-RECEIVING RECESS OF GIVEN PATH AND DIRECTION, COMPRISING: A ONE-PIECE CYLINDRICAL BALL RACE MEMBER HAVING AN AXIAL APERTURE OF GREATER DIAMETER THAN THE DIAMETER OF SAID LEAD SCREW, DISPOSED IN ENCOMPASSING RELATION TO SAID LEAD SCREW, SAID BALL RACE MEMBER HAVING A FIRST INTERNAL HELICAL BALL-RECEIVING CHANNEL OF GIVEN DEPTH EXTENDING PARALLEL TO THE HELICAL RECESS IN SAID LEAD SCREW, AND A SECOND INTERNAL HELICAL CHANNEL OF GREATER DEPTH BUT OPPOSITELY DIRECTED, RELATIVE TO SAID FIRST CHANNEL, EACH OF SAID CHANNELS EXTENDING FOR THE FULL AXIAL LENGTH OF SAID BALL RACE MEMBER, SAID CHANNELS INTERSECTING AT THEIR ENDS TO AFFORD A COMPLETE ONETURN BALL PATH, AROUND SAID LEAD SCREW, COMPRISING AN ADVANCE PORTION DEFINED BY SAID FIRST CHANNEL AND A RETURN PORTION DEFINED BY SAID SECOND CHANNEL; A PLURALITY OF LOAD-BEARING BALL MEMBERS DISPOSED IN SAID CHANNELS AND SUBSTANTIALLY COMPLETELY FILLING SAID BALL PATH; AND A PAIR OF DEFLECTORS, MOUNTED ON SAID BALL RACE MEMBER AT THE OPPOSITE ENDS THEREOF AT THE OUTER SIDE OF THE RESPECTIVE INTERSECTIONS OF SAID CHANNELS AND EXTENDING SUBSTANTIALLY RADIALLY OF THE AXIS OF SAID LEAD SCREW, FOR DEFLECTING SAID BALLS FROM ONE CHANNEL TO THE OTHER, SAID DEFLECTORS EACH AFFORDING A SUBSTANTIALLY UNINTERRUPTED TRANSITION SURFACE CONSISTING A CONTINUATION OF BOTH CHANNELS AT THEIR INTERSECTION.