Chock release column for use with expansible hole anchor

Abstract

A chock release column operable for use with conventional hole anchor devices is provided and generally includes a cable cylinder operable for being secured about a load cable of an expansible hole anchor, a chock clearance portion extending from the cable cylinder that it corresponds in size and shape to an end of the center chock, and an enlarged head adapted for locating outside of a hole of a structure, the enlarged head generally defining a striking surface adapted for receiving a sudden force and transferring the force through the chock release column to a center chock or at least one side chock of the expansible hole anchor, such that the at least one side chock is movable from the anchor-expanding position to the anchor-contracting position to thereby dislodge said anchor from the hole of the structure.

1 . An expansible anchor adapted for inserting into a hole formed with a structure, said anchor comprising: 
 a load cable;    a center chock attached to an end of said load cable;    at least one side chock adjacent to said center chock and adapted for movement between an anchor-contracting position and an anchor-expanding position;    a chock release column having a cable cylinder portion and an enlarged head adapted for locating outside of the hole, said enlarged head defining a striking surface adapted for receiving a sudden force and transferring the force through said chock-release column to said center chock, such that said at least one side chock is movable from the anchor-expanding position to the anchor-contracting position to thereby dislodge said anchor from a hole of a structure; and    a handle carried by said load cable and adapted for moving said at least one side chock from the anchor-expanding position to the anchor-contracting position.    
   
   
       2 . The expansible hole anchor of  claim 1 , wherein the chock release column further comprises a chock clearance portion.  
   
   
       3 . The expansible hole anchor of  claim 1 , wherein the chock release column is swaged about the load cable.  
   
   
       4 . The expansible hole anchor of  claim 3 , wherein the chock release column abuts the center chock.  
   
   
       5 . The expansible hole anchor of  claim 3 , wherein the chock release column is spaced apart from the center chock.  
   
   
       6 . The expansible hole anchor of  claim 1 , wherein the chock release column is secured to the load cable by a fastener.  
   
   
       7 . The expansible hole anchor of  claim 6 , wherein the chock release column abuts the center chock.  
   
   
       8 . The expansible hole anchor of  claim 6 , wherein the chock release column is spaced apart from the center chock.  
   
   
       9 . The expansible hole anchor of  claim 2 , wherein the chock clearance portion is corresponding in size to and end of the center chock which is nearest the chock release column.  
   
   
       10 . A chock release column operable for use with an expansible hole anchor, comprising: 
 a cable cylinder portion; and    an enlarged head adapted for locating outside of a hole, said enlarged head defining a striking surface adapted for receiving a sudden force and transferring the force through said chock-release column to a center chock of the expansible hole anchor, such that at least one side chock of the expansible hole anchor is movable from the anchor-expanding position to the anchor-contracting position to thereby dislodge said anchor from the hole.    
   
   
       11 . The chock release column of  claim 10 , wherein the chock release column further comprises a chock clearance portion.  
   
   
       12 . The chock release column of  claim 10 , wherein the chock release column is swaged about a load cable of the expansible hole anchor.  
   
   
       13 . The chock release column of  claim 12 , wherein the chock release column abuts the center chock.  
   
   
       14 . The chock release column of  claim 12 , wherein the chock release column is spaced apart from the center chock.  
   
   
       15 . The chock release column of  claim 10 , wherein the cable cylinder is corresponding in size to and end of the center chock which is nearest the chock release column.  
   
   
       16 . The chock release column of  claim 11 , wherein the chock clearance portion is corresponding in size to and end of the center chock which is nearest the chock release column.  
   
   
       17 . The chock release column of  claim 11 , wherein the cable cylinder, the enlarged head and the chock clearance portion are integral in construction.  
   
   
       18 . The chock release column of  claim 11 , wherein the cable cylinder, the enlarged head and the chock clearance portion are separate components joined together.  
   
   
       19 . A chock release column supported on a load cable of an expansible hole anchor, the chock release column comprising: 
 a cable cylinder portion; and    an enlarged head defining a striking surface; and    a chock clearance portion, said chock clearance portion corresponding in size to and end of a center chock of the expansible hole anchor which is nearest the chock release column.    
   
   
       20 . The chock release column of  claim 19 , wherein said striking surface of the enlarged head is adapted for receiving a sudden force and transferring the force through the chock-release column to the center chock, such that the expansible hole anchor is movable from the anchor-expanding position to the anchor-contracting position.