Torque limiting nut

Claim 1

A SEPARABLE FASTENER COMPRISING: A THREADED BOLT; A NUT FORMED WITH A NON-CIRCULAR BASE PORTION AND AN ELONGATED, SUBSTANTIALLY CYLINDRICAL BODY PORTION; SAID NUT BEING INTERIORLY THREADED IN THE BASE PORTION AND FORMED WITH AN ANNULAR INTERIOR RECESS ADJACENT THE THREADED PORTION; THE EXTERIOR OF THE NUT BETWEEN THE HEAD PORTION AND THE CYLINDRICAL PORTION BEING FORMED WITH A PAIR OF AXIALLY SPACED ANNULAR SHOULDERS WITH THE SHOULDER CLOSER TO THE NUT BASE EXTENDING RADIALLY OUTWARDLY BEYOND THE OTHER OF SAID SHOULDERS; A PLURALITY OF RESILIENT, AXIALLY DIRECTED FINS EXTENDING FROM SAID SHOULDER CLOSER TO SAID BASE AND BEING RIGIDLY SECURED THERETO, SAID FINS DEFINING RELATIVELY THIN, FLAT ELEMENTS LYING IN SUBSTANTIALLY RADIAL PLANES WITH RESPECT TO THE LONGITUDINAL AXIS OF THE NUT; A ROTARY MEMBER ROTATABLY JOURNALED ON THE CYLINDRICAL BODY PORTION OF SAID NUT AND ABUTTING THE OTHER OF SAID SHOULDERS, SAID ROTARY MEMBER HAVIG A NONCIRCULAR EXTERNAL SURFACE AND HAVING A PLURALITY OF RESILIENT FINS SUBSTANTIALLY IDENTICAL TO THOSE ON SAID NUT EXTENDING AXIALLY FROM THE UNDERSIDE THEREOF TOWARD THE FINS ON SAID NUT AND BEING RIGIDLY SECURED THERETO; THE FREE ENDS OF THE FINS ON SAID ROTARY MEMBER EXTENDING AXIALLY BEYOND THE FREE ENDS OF THE FINS ON SAID NUT; WHEREBY ROTARY MOTION OF THE ROTARY MEMBER WILL IMPART ROTARY MOTION TO SAID NUT THROUGH SAID OPPOSED FINS AND RESULT IN RELATIVE LINEAR MOVEMENT BETWEEN SAID BOLT AND SAID NUT TO A POSITION WHERE THE RESISTANCE TO ROTARY MOTION IS SUFFICIENT TO SPRING THE FINS OF SAID ROTARY MEMBER OVER THE FINS OF SAID NUT SO THAT CONTINUED ROTARY MOTION OF SAID ROTARY MEMBER WILL NOT RESULT IN RELATIVE LINEAR MOVEMENT OF SAID NUT AND BOLT; SAID NUT HAVING RADIALLY OUTWARDLY EXTENDING MEANS AT THE FREE END OF SAID CYLINDRICAL PORTION FOR RETAINING SAID ROTARY MEMBER THEREON.