Releasable nut with radial and longitudinal lockout

Claim 1

AN EXPLOSIVE NUT DEVICE FOR RELEASABLY HOLDING IN ASSEMBLY A BOLTED STRUCTURE COMPRISED OF A BOLT-HEAD PART, A NUT-HELD PART, AND A BOLT FOR HOLDING SAID PARTS IN ASSEMBLY, WHICH DEVICE COMPRISES: A BODY BEARING ON SAID NUT HELD PART AND HAVING AN INTERNAL CYLINDRICAL CHAMBER AXIALLY ALIGNED WITH SAID BOLT, SAID CHAMBER EXTENDING LONGITUDINALLY FROM A RELEASE END HAVING AN OPENING FOR THE RECEPTION OF THE THREADED SHANK OF SAID BOLT, TO A PRESSURE END ENCLOSING A PRESSURE CHAMBER, AND HAVING A MOUNTING LOCATION FOR AN EXPLOSIVE SQUIB MEANS; A SET OF INTERNALLY THREADED SEGMENTS FORMING, IN ASSEMBLY, A THREADED SLEEVE MATING WITH THE THREADS OF SAID BOLT, SAID SLEEVE ASSEMBLY HAVING OUTWARDLY FLARING CONICAL SURFACES AT EACH END; A PISTON CLOSELY RECEIVED IN SAID CHAMBER AND RECIPROCABLE BETWEEN A BOLT-ENGAGING POSITION NEAR THE PRESSURE END OF SAID CYLINDRICAL CHAMBER AND A BOLTRELEASING POSITION NEAR THE RELEASE END OF SAID CHAMBER, SAID PISTON BEING COMPRISED OF A PRESSURE HEAD AT THE PRESSURE END AND A DEPENDING SLEEVE OPENING TOWARD THE RELEASE END, SAID SLEEVE ENCLOSING SAID SEGMENT ASSEMBLY WITH AN ANNULAR SPACE BETWEEN THE EXTERIOR OF SAID SEGMENTS AND THE INTERIOR OF SAID SLEEVE; A LOCKING RING STRUCTURE THREADABLY RECEIVED IN THE RELEASE END OPENING OF SAID BODY, SAID LOCKING RING STRUCTURE BEING FORMED TOWARD THE PRESSURE END OF SAID BODY WITH A CONICAL SURFACE MATING WITH THE RELEASE END CONICAL SURFACE OF SAID SEGMENT ASSEMBLY, AND SAID LOCKING RING STRUCTURE BEING PROVIDED WITH UPSTANDING KEYS ENGAGING KEYWAYS IN SAID SEGMENT ASSEMBLY TO LOCK IT AGAINST ROTATION WITHIN SAID BODY; TIMING RING MEANS ENCLOSED WITHIN SAID PISTON SLEEVE BETWEEN SAID PRESSURE HEAD AND SAID THREADED SEGMENT ASSEMBLY, SAID TIMING RING HAVING A CONVERGING CONICAL SURFACE MATING WITH AND BEARING ON SAID PRESSURE END OF SAID THREADED SEGMENT ASSEMBLY, SAID TIMING RING MEANS BEING SPACED LONGITUDINALLY AWAY FROM THE INTERIOR OF SAID PRESSURE HEAD OF SAID PISTON TOWARD THE RELEASE END OF SAID BODY TO PERMIT AN INITIAL STAGE OF RELEASING MOVEMENT BY SAID PISTON BEFORE THE INTERIOR OF SAID PRESSURE HEAD MAKES DRIVING ENGAGEMENT WITH THE PRESSURE END OF SAID TIMING RING MEANS; AN ANNULAR SHEAR FLANGE ON THE EXTERIOR OF SAID TIMING RING MEANS; A FLANGE-SHEARING STRUCTURE ON THE INTERIOR OF SAID PISTON ADAPTED TO SHEAR SAID FLANGE FROM SAID TIMING RING IMMEDIATELY UPON THE BEGINNING OF SAID RELEASE MOVEMENT; A PAIR OF INWARDLY PROJECTING ANNULAR SHOULDERS ON THE INTERIOR WALL OF SAID PISTON SLEEVE; A PAIR OF OUTWARDLY PROJECTING ANNULAR SHOULDERS ON THE EXTERIOR OF SAID THREADED ASSEMBLY, SAID SEGMENT SHOULDERS MATING WITH SAID SLEEVE SHOULDERS, AND ADAPTED TO BE HELD IN AN ABUTTING POSITION WITH SAID THREADED SEGMENTS ENGAGED WITH SAID BOLT THREADS, WHEN SAID PISTON IS IN THE BOLT-ENGAGING POSITION IN THE PRESSURE END OF SAID CYLINDRICAL CHAMBER, AND ADAPTED TO MOVE OUTWARDLY IN NESTING ENGAGEMENT WITH EACH OTHER UPON MOVEMENT OF SAID CYLINDER TOWARD SAID RELEASE POSITION; AND SQUIB MEANS FOR DISCHARGING PROPULSION GASES INTO THE PRESSURE END OF SAID CYLINDRICAL CHAMBER, AND DRIVE SAID PISTON TOWARD SAID RELEASE END, AND IN SEQUENCE, FIRST SHEARING SAID SHEAR FLANGE FROM SAID TIMING RING MEANS, AND DISPLACING SAID ANNULAR NESTING SHOULDERS FROM UNNESTED TO NESTED POSITION, AND THEN TELESCOPING SAID TIMING RING TOWARDS SAID LOCKING RING TO PRODUCE RADIAL BOLT-RELEASING MOVEMENT OF SAID SEGMENTS.