Patent Publication Number: US-2005117996-A1

Title: Self-drilling fastener

Description:
FIELD OF INVENTION  
      This invention generally relates to blind fasteners that are used in conjunction with mounting objects on hollow walls and ceilings.  
     BACKGROUND OF THE INVENTION  
      This application is an improvement to U.S. Pat. No. 5,226,767. The background information for this improvement is exactly the same as it is for that patent.  
     SUMMARY OF THE INVENTION  
      It is the object of the present invention to provide a useful means for establishing an opening in a hollow wall or ceiling with a minimum of effort for the insertion of a blind fastener.  
      According to the present invention a double sided fastener is provided which is adapted to make an appropriately sized hole on one end for the insertion of the opposite fastener end of the invention. 
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
       FIG. 1  is a perspective view of the improved fastener  
    
    
     DETAILED DESCRIPTION  
      The Self-Drilling invention is an improvement over U.S. Pat. No. 5,226,767. It changes the blunt end of that invention into a device that is capable of making a hole that enables the fastener to fit itself through.  
       FIG. 1  shows the fastener  2  that has end  1  shaped so that it will be capable of making the hole required for the insertion of the fastener end of the invention into a hollow wall or ceiling. No tools are needed to make the hole and use the fastener.