Explosive separable segmental nut including key and spline means

Claim 1

A SEPARABLE NUT WITH AN AXIS, COMPRISING A PLURALITY OF NUT SEGMENTS SHAPED TO FIT TOGETHER SO AS TO FORM AN EXTERIOR SURFACE AND AN INTERNALLY THREADED PASSAGE, A RETAINER HAVING A RECESS OPENING AT ONE END OF THE RETAINER AND HAVING AN INNER WALL WITHIN WHICH SAID SEGMENTS ARE FITTED TO BE HELD TOGETHER, KEY AND SPLINE MEANS KEYING THE RETAINER AND SEGMENTS TOGETHER IN TORQUE-TRANSMITTING AND AXIALLY-SLIDEABLE RELATIONSHIP WITH EACH OTHER, SAID KEY AND SPLINE MEANS COMPRISING A KEY ENGAGED IN A SLOT IN THE RETAINER AND IN A SPLINE IN THE SEGMENTS, THE SPLINES DIMINISHING IN DEPTH TOWARD THE INNER END OF THE RECESS SO AS TO HAVE A TAPERED BOTTOM, AND IN WHICH A COUNTERBORE IS PROVIDED IN THE ASSEMBLED SEGMENTS TO FORM A FULCRUM AXIALLY ADJACENT TO THE TAPERED BOTTOM, WHEREBY THE KEYS TEND TO FORCE THE SEGMENT THREADS AWAY FROM THE SHANK WHEN THE RETAINER IS FIRED OFF THE SEGMENTS, A CAP ATTACHED TO THE RETAINER, A YIELDABLE COLLAR ON SAID CAP OVERHANGING AT LEAST PART OF EACH KEY AND OF EACH SEGMENT, AND AN EXPLOSIVE IN FLUID COMMUNICATION WITH SAID RECESS AND ADAPTED TO FIRE GASEOUS PRODUCTS OF EXPLOSION BETWEEN THE RETAINER AND THE SEGMENTS FOR OVERCOMING THE YIELDABLE COLAR AND FIRING THE RETAINER OFF THE SEGMENTS SO THEY CAN SEPARATE FROM THE THREADS OF A SHANK ONTO WHICH THEY WERE THREADED, WHICH SHANK FORMED A FLUID SEAL AT THE SEGMENT THREADS.