Nail with wings on tip

Abstract

A nail includes a head, a shank connected to the head and a plurality of threads defined in an outer periphery of the shank, a tip portion connected to an end of the shank, and a plurality of wings extending from the tip portion. The tip of the tip portion first penetrates through the object and the wings cut through the board and form a plurality of parts in an inner periphery of a hole into which the nail penetrates. The nail penetrates and moves through the object linearly. The threads are engaged with the parts so that the nail is firmly engaged with the board.

1 . A nail comprising: 
 a head, a shank connected to the head, a plurality of threads defined in an outer periphery of the shank, a tip portion connected to an end of the shank, a plurality of wings extending from the tip portion, the threads located between the head and the wings, the nail adapted to penetrate through an object and moving linearly, the wings adapted to cut through the board and to form a plurality of parts in an inner periphery of a hole in the board, the threads adapted to be engaged with the parts.    
   
   
       2 . The nail as claimed in  claim 1 , wherein each of the wings has a cutting edge.  
   
   
       3 . The nail as claimed in  claim 1 , wherein the tip portion is an elongate flat portion.  
   
   
       4 . The nail as claimed in  claim 1 , wherein the wings are located at a distance from a tip of the tip portion.  
   
   
       5 . The nail as claimed in  claim 1 , wherein the wings extend outward from a tip of the tip portion.  
   
   
       6 . The nail as claimed in  claim 1 , wherein an outer diameter of two diagonally located wings is smaller than an outer diameter of the shank.  
   
   
       7 . The nail as claimed in  claim 1 , wherein an outer diameter of two diagonally located wings is larger than an outer diameter of the shank.  
   
   
       8 . A nail comprising: 
 a head, a shank connected to the head, a plurality of threads defined in an outer periphery of the shank, a tip portion connected to an end of the shank, a plurality of wings extending from the shank, the threads located between the head and the wings, the nail adapted to penetrate through an object and moving linearly, the wings adapted to cut through the board and to form a plurality of parts in an inner periphery of a hole in the board, the threads adapted to be engaged with the parts.    
   
   
       9 . The nail as claimed in  claim 8 , wherein each of the wings has a cutting edge.  
   
   
       10 . The nail as claimed in  claim 8 , wherein the wings are located at a distance from a tip of the tip portion.  
   
   
       11 . The nail as claimed in  claim 8 , wherein the wings extend outward from a tip of the tip portion.  
   
   
       12 . The nail as claimed in  claim 8 , wherein an outer diameter of two diagonally located wings is larger than an outer diameter of the shank.  
   
   
       13 . A nail comprising: 
 a head, a shank connected to the head, a plurality of threads defined in an outer periphery of the shank, a tip portion connected to an end of the shank, a plurality of continuous wings extending from the tip portion and the shank and being connected to an underside of the head, the nail adapted to penetrate through an object and moving linearly, the wings adapted to cut through the board and to form a plurality of parts in an inner periphery of a hole in the board, the threads adapted to be engaged with the parts.    
   
   
       14 . The nail as claimed in  claim 13 , wherein each of the wings has a cutting edge.