Slide fastener locking assembly

Claim 1

IN A TROUSERS, A FLY STRUCTURE INCLUDING A PAIR OF OVERLAPPED FLAP PORTIONS, A SLIDE FASTENER COMPRISING A PAIR OF ELEMENT CARRYING TAPES, MATING ELEMENTS CARRIED BY SAID TAPES, A SLIDER OPENING AND CLOSING SAID MATING ELEMENTS, ONE OF SAID TAPES BEING SECURED TO ONE OF SAID FLAP PORTIONS AND THE OTHER OF SAID TAPES BEING SECURED TO THE OTHER OF SAID FLAP PORTIONS, WITH EACH OF SAID TAPES BEING JOINED TO ITS FLAP BY A LINE OF STITCHING CLOSELY ADJACENT TO THE ELEMENTS CARRIED BY THE TAPES, THE MATING ELEMENTS OF THE TWO TAPES SPANNING THE GAP BETWEEN THE FLAP PORTIONS WHEN THE SLIDER IS IN ITS CLOSED POSITION, WITH SAID SLIDER COMPRISING A BODY HAVING A FRONT WING, A BACK WING SPACED THEREFROM, A HOLLOW NECK PORTION CONNECTING THE END OF THE FRONT AND BACK WINGS, SAID WINGS AND NECK PORTION DEFINING GUIDE CHANNELS TO RECEIVE THE MATING ELEMENTS DURING THE CLOSING AND OPENING OPERATIONS, AN ELONGATED THIN PULL TAP PIVOTALLY MOUNTED ON THE BODY OF THE SLIDER MIDWAY ITS ENDS, A HOOK ON THE FREE END OF SAID PULL TAB, A LOOP OUTSTRUCK FROM THE BODY OF THE PULL TAB DISPOSED LONGITUDINALLY OF THE BODY OF THE PULL TAB, A LOOP ON ONE OF THE FLAP PORTIONS IN LINE WITH THE MOVEMENT OF THE SLIDER, SAID LOOP OPENING UPWARDLY AND DOWNWARDLY, AND A HOOK ON THE OTHER OF SAID FLAP PORTIONS, THE HOOK ON SAID PULL TAB ADAPTED TO ENGAGE SAID LOOP TO PREVENT ACCIDENTAL MOVEMENT OF THE SLIDER, SAID HOOK ADAPTED TO ENGAGE THE LOOP ON SAID PULL TAB TO ENSURE COMPLETE CLOSURE OF THE FLAP PORTIONS, WHEN THE HOOK IS ENGAGED IN THE LOOP ON THE FLY PORTION.