Floating captive screw

Claim 1

IN COMBINATION WIHT A WORKPIECE HAVING AN OPENING THERETHROUGH FROM A FIRST SURFACE TO A SECOND SURFACE THEREOF, A CAPTIVE SCREW DEVICE COMPRISING A FIRST SLEEVE, SAID FIRST SLEEVE HAVING A RADIALLY OUTWARDLY EXTENDING FLANGE AT ONE END THEREOF, A CYLINDRICAL PORTION EXTENDING INWARDLY FROM SAID ONE END, A SECOND CYLINDRICAL PORTION OF REDUCED EXTERNAL DIAMETER EXTENDING INWARDLY FROM OPPOSITE END OF SAID FIRST SLEEVE, SAID SECOND CYLINDRICAL PORTION BEING OF SMALLER DIAMETER THAN SAID OPENING AND EXTENDING THERETHROUGH, AND A RADIALLY DIRECTED SHOULDER INTERMEDIATE SAID FIRST AND SECOND CYLINDRICAL PORTIONS, A FIRST GENERALLY FLAT WASHER HAVING CIRCUMFERENTIALLY CONTINUOUS INNER AND OUTER PERIPHERIES CIRCUMSCRIBING SAID FIRST SLEEVE ADJACENT SAID SHOULDER AND BEING OF GREATER EXTERNAL DIAMETER THAN SAID SHOULDER, SAID SLEEVE AT SAID OPPOSITE END BEING BENT OUTWARDLY TO PROVIDE A FLANGE ON SAID OPPOSITE END OF SAID SLEEVE, A SECOND GENERALLY FLAT WASHER HAVING CIRCUMFERENTIALLY CONTINUOUS INNER AND OUTER PERIPHERIES CIRCUMSCRIBING SAID FIRST SLEEVE ADJACENT SAID FLANGE AND BEING OF GREATER EXTERNAL DIAMETER THAN SAID FLANGE, SAID FIRST AND SECOND WASHERS OVERLAPPING SAID FIRST AND SECOND SURFACES OF SAID WORKPIECE, RESPECTIVELY, AT THE ENDS OF SAID OPENING FOR COOPERATING WITH SAID SHOULDER AND FLANGE TO PROVIDE AN ATTACHMENT FOR SAID FIRST SLEEVE TO SAID WORKPIECE WHILE PERMITTING LIMITED LATERAL FLOATING MOVEMENT OF SAID FIRST SLEEVE RELATIVE TO SAID WORKPIECE, A SECOND SLEEVE, SAID SECOND SLEEVE HAVING A RADIALLY INWARDLY EXTENDING FLANGE AT ONE END THEREOF AND SLIDABLY RECEIVING SAID FIRST SLEEVE, SAID RADIALLY EXTENDING FLANGES OF SAID FIRST AND SECOND SLEEVES BEING INTERENGAGEABLE FOR LIMITING THE RELATIVE AXIAL MOVEMENT OF SAID FIRST AND SECOND SLEEVES IN ONE DIRECTION, A STUD, SAID STUD HAVING A SHANK HAVING THREADS THEREON, SAID SHANK EXTENDING AXIALLY THROUGH SAID SLEEVES, SAID STUD HAVING A HEAD, SAID SECOND SLEEVE AT THE OPPOSITE END THEREOF BEING CONNECTED TO SAID HEAD OF SAID STUD, SAID HEAD HAVING A DRIVING RECESS THEREIN FOR RECEIVING A DRIVING TOOL, AND A SPRING INTERPOSED BETWEEN SAID ONE END OF SAID FIRST SLEEVE AND SAID HEAD FOR BIASING SAID STUD AND WITH IT SAID SECOND SLEEVE IN SAID ONE DIRECTION TO BRING SAID RADIALLY EXTENDING FLANGES OF SAID FIRST AND SECOND SLEEVES INTO INTERENGAGEMENT.