Attachment apparatus

Abstract

The present invention includes an attachment apparatus comprising a rotation limiting member adapted to be threaded onto a threaded member; and a preload nut adapted to be threaded onto the threaded member. The rotation limiting member comprises a plurality of pins, and the preload nut comprises a plurality of slots, preferably wherein the plurality of pins and the plurality of slots are the same in number, which is preferably three. The plurality of pins of the rotation limiting member are filled into a corresponding plurality of slots of the preload nut to form a rotatable unit adapted to be threaded onto the threaded member. In use, the rotatable unit is threaded onto the threaded member. The present invention thus provides a unitized removable device for holes, including holes other than circular in shape, which have an established depth before an end of, or before an enlargement of the hole. The configuration of some exposed part of the device, or the head, is shaped and formed for its intended purpose, such as clamping, anchor points, eye bolts, stud anchor, and the like. The device allows for the installation, preloading and removal of all components of the device, as a unit, without damage to the member for which attachment is required by simple rotations of some exposed part of the device.

What is claimed is:  
     
       1. Attachment apparatus, comprising: 
       a) a threaded member;  
       b) a rotation limiting member adapted to be threaded onto said threaded member; and  
       c) a preload nut adapted to be threaded onto said threaded member;  
       d) means for resisting said rotation limiting member and said preload nut from easy detachment from said threaded member.  
     
     
       2. The apparatus of claim  1 , wherein said rotation limiting member comprises a plurality of pins; and said preload nut comprises a plurality of slots. 
     
     
       3. The apparatus of claim  2 , wherein said plurality of pins and said plurality of slots are the same in number. 
     
     
       4. The apparatus of claim  3 , wherein said plurality of pins of said rotation limiting member are adapted to be filled into a corresponding plurality of slots of said preload nut to form a rotatable unit adapted to be threaded onto a threaded member. 
     
     
       5. The apparatus of claim  4 , wherein said rotatable unit is threaded onto said threaded member. 
     
     
       6. The apparatus of claim  5 , wherein said number of the plurality is three. 
     
     
       7. The apparatus of claim  6  wherein said preload nut is capable of rotating about 60°. 
     
     
       8. Attachment apparatus, comprising: 
       a) a threaded member;  
       b) a rotation limiting member threaded onto said threaded member;  
       c) a preload nut threaded onto said threaded member; and  
       d) means for resisting said rotation limiting member and said preload nut from easy detachment from said threaded member.  
     
     
       9. The apparatus of claim  8 , wherein said rotation limiting member comprises a plurality of pins; and said preload nut comprises a plurality of slots. 
     
     
       10. The apparatus of claim  9 , wherein said plurality of pins and said plurality of slots are the same in number. 
     
     
       11. The apparatus of claim  10 , wherein said plurality of pins of said rotation limiting member are filled into a corresponding plurality of slots of said preload nut to form a rotatable unit adapted to be threaded onto said threaded member. 
     
     
       12. The apparatus of claim  11 , wherein said rotatable unit is threaded onto said threaded member. 
     
     
       13. The apparatus of claim  12 , wherein said number of the plurality is three. 
     
     
       14. The apparatus of claim  13  wherein said preload nut is capable of rotating about 60°.