Mine Roof Bolt With End Fitting

Abstract

A mine roof bolt includes an elongated body, first and second nuts, and an end fitting. The elongated body has a first end and a second end with the first end having a threaded portion. The first and second nuts are positioned on the threaded portion of the first end of the elongated body. The end fitting is positioned on the threaded portion of the first end of the elongated body between the first and second nuts.

1 . A mine roof bolt comprising:
 an elongated body having a first end and a second end, the first end having a threaded portion;   first and second nuts positioned on the threaded portion of the first end of the elongated body; and   an end fitting positioned on the threaded portion of the first end of the elongated body between the first and second nuts.   
     
     
         2 . The mine roof bolt of  claim 1 , wherein the end fitting comprises an eye nut having a body, the body defining an opening configured to receive the threaded portion of the first end of the elongated body and an eyelet. 
     
     
         3 . The mine roof bolt of  claim 2 , wherein the opening in the body of the eye nut is threaded. 
     
     
         4 . The mine roof bolt of  claim 1 , wherein the second end of the elongated body includes an angled surface. 
     
     
         5 . The mine roof bolt of  claim 1 , wherein the first and second nuts engage the end fitting. 
     
     
         6 . The mine roof bolt of  claim 1 , wherein the elongated body is formed from rebar. 
     
     
         7 . The mine roof bolt of  claim 1 , wherein the first and second nuts define drive faces. 
     
     
         8 . The mine roof bolt of  claim 1 , wherein the end fitting extends away from the first end of the elongated body. 
     
     
         9 . The mine roof bolt of  claim 1 , further comprising a third nut positioned on the threaded portion of the first end of the eleongated body. 
     
     
         10 . The mine roof bolt of  claim 9 , wherein the third nut is spaced form the first nut toward the second end of the eleongated body. 
     
     
         11 . A method of installing a mine roof bolt comprising:
 positioning a caihidge having resin bonding material within a bore hole;   inserting a mine roof bolt into the bore hole and rupturing the cartridge, the mine roof bolt having a threaded portion and a rotation nut;   rotating the mine roof bolt via the rotation nut thereby mixing the resin bonding material;   positioning a first nut on the threaded portion of the mine roof bolt;   positioning an end fitting on the threaded portion of the mine roof bolt; and   positioning a second nut on the threaded portion of the mine roof bolt such that the end fitting is positioned between the first and second nuts.   
     
     
         12 . The method of  claim 11 , wherein the end fitting comprises an eye nut having a body, the body defining an opening and an eyelet, and wherein the threaded portion of the mine roof bolt is positioned through the opening of the eye nut body. 
     
     
         13 . The method of  claim 12 , wherein the opening in the body of the eye nut is threaded, and wherein the eye nut is threaded onto the threaded portion of the mine roof bolt. 
     
     
         14 . The method of  claim 11 , wherein an end of the mine roof bolt opposite the threaded end includes an angled surface that engages the cartridge when the cartridge is ruptured. 
     
     
         15 . The method of  claim 11 , further comprising engaging the end fitting with the first and second nuts. 
     
     
         16 . The method of  claim 11 , wherein the mine roof bolt is formed from rebar. 
     
     
         17 . The method of  claim 11 , wherein the first nut is positioned at about a midpoint of the threaded porotion of the mine roof bolt. 
     
     
         18 . The method of  claim 11 , further comprising removing the first and second nut and the end fitting from the threaded portion of the mine roof bolt prior to rotating the mine roof bolt.