Explosive separable nut

Claim 1

A SEPARABLE NUT WITH AN AXIS, COMPRISING: A PLURALITY OF NUT SEGMENTS SHAPED TO FIT IN SPACED ADJACENCY WITH EACH OTHER TO FORM AN INTERRUPTED EXTERIOR SURFACE WITH AXIALLY-EXTENDING GAPS BETWEEN THE SEGMENTS, AND AN INTERRUPTED INTERNALLY-THREADED PASSAGE; A PERIPHERAL BAND HAVING AN INTERNAL, AXIALLY-EXTENDING FIN IN EACH GAP, AND AN INTERNAL INTERRUPTED SURFACE IN FULL SURFACE-TOSURFACE ENGAGEMENT WITH THE INTERRUPTED EXTERIOR SURFACES OF THE NUT SEGMENTS, THE FINS FILLING THE GAPS AND THEREBY HOLDING THE SEGMENTS IN ALIGNMENT AND MAKING A FLUID SEAL THEREBETWEEN, AND A CONTINUOUS SURFACE OF REVOLUTION ON THE OUTSIDE OF THE BAND, THE BAND BEING MADE OF A READILYCUT, FLUID-IMPERMEABLE MATERIAL; A RETAINER HAVING A RECESS OPENING AT ONE END THEREOF, AND HAVING AN INNER CYLINDRICAL WALL WITHIN WHICH THE BAND AND SEGMENTS ARE FITTED, THE SURFACE OF REVOLUTION MAKING FULL PERIPHERAL CONTACT WITH SAID CYLINDRICAL WALL, THE BAND THEREBY MAKING A FLUID-SEALING FIT BETWEEN THE RETAINER AND THE SEGMENTS AND MAKING SLIDING FIT BETWEEN ITSELF AND THE RETAINER; KEY AND SPLINE MEANS KEYING THE RETAINER AND SEGMENTS TOGETHER IN TORQUE-TRANSMITTING AND AXIALLY-SLIDABLE RELATIONSHIP WITH EACH OTHER; A YIELDABLE COLLAR ATTACHED TO THE RETAINER WHICH LATERALLY OVERHANGS AT LEAST A PART OF EACH KEY AND 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 THAT PART OF THE COLLAR WHICH OVERHANGS THE SEGMENTS, AND FIRING THE RETAINER OFF THE SEGMENTS SO THAT THEY CAN SEPARATE FROM EACH OTHER WHEN THE THREADS OF SAID INTERNALLY-THREADED PASSAGE ARE THREADED ONTO A SHANK AND FORM A FLUID SEAL THEREWITH, THE COLLAR FORCING THE KEY ALONG THE SPLINE SO AS TO CUT THE BAND AND RELEASE THE SEGMENTS.