Patent ID: 8621742

Claim:
A method of resisting movement of a nut away from a set position on a threaded rod, the method comprising the steps of: obtaining a first nut and a second nut having threads mated to the threads of a threaded rod; obtaining a ferrule having an inside diameter defined by a lengthwise bore that permits the ferrule to be positioned on a threaded lengthwise portion of the threaded rod, the ferrule being a non-resilient ring having a profile with distal first and second ends tapered to distal thin edges; provided further that the first nut and the second nut each have a tapered cavity extending axially inward from a face of the nut, and tapering from a larger opening down to the diameter of a threaded portion of the nut; provided further that a maximum inside diameter of the tapered cavity of the first nut and the second nut is greater than an outside diameter of a corresponding first and second end of the ferrule; positioning the first nut at a set position on the threaded rod; positioning the ferrule on a threaded portion of the threaded rod such that the first end of the ferrule engages the tapered cavity of the first nut; positioning the second nut so that the tapered cavity of the second nut engages the second end of the ferrule; torquing the second nut towards the first nut by a specified predetermined force; and permanently crimping and deforming the ferrule into the threads of the threaded rod, thereby resisting movement of the nuts away from the set position.