Pipe nipple

Abstract

A pipe nipple has a bore configuration at one end thereof for receiving a tool therein to rotate the nipple about its longitudinal axis. The exterior of the nipple has surface formations as a stop against which a hose can be inserted over the nipple.

What is claimed is:  
     
         1 . A method of manufacturing a pipe nipple for an automobile cooling system, comprising: 
 cold-forming a tubular body having first and second ends and a bore there through from said first end to said second end, including: 
 threading a portion of said body from said first end inwardly toward said second end;  
 forming an outwardly extending flange at said second end; and  
 shaping said bore from said second end inwardly toward said first end to receive a tool therein for rotating said nipple about a longitudinal axis of the nipple.  
   
     
     
         2 . The method of  claim 1 , said shaping step including forming corners in said bore for receiving a hex tool therein.  
     
     
         3 . The method of  claim 1 , including forming an outwardly extending formation on said nipple between and spaced from said first and second ends.  
     
     
         4 . The method of  claim 3 , including forming a plurality of outwardly extending wings as said formation.  
     
     
         5 . The method of  claim 3 , including forming a circumferential ring as said formation.  
     
     
         6 . The method of  claim 5 , including forming a circumferential depression adjacent said ring.  
     
     
         7 . A nipple comprising: 
 a tubular body having an outer surface, first and second ends and a longitudinal bore there through;    said first end having threads thereon;    said second end having an outwardly extending flange and being configured to receive a hose thereon; and    said bore configured at said second end for receiving a tool therein for axially rotating said nipple.    
     
     
         8 . The nipple of  claim 7 , said bore being configured at said second end for receiving a hex tool therein.  
     
     
         9 . The nipple of  claim 7 , said outer surface of said nipple having at least one outwardly extending formation between said threads and said flange functioning as a stop for a hose inserted on said nipple.  
     
     
         10 . The nipple of  claim 9 , said at least one formation including a plurality of spaced wings.  
     
     
         11 . The nipple of  claim 9 , said at least one formation including a circumferential ring about said nipple.  
     
     
         12 . The nipple of  claim 11 , including a circumferential depression adjacent said circumferential ring on a side of said ring toward said second end.  
     
     
         13 . The nipple of  claim 7 , made by cold forming.  
     
     
         14 . A pipe nipple for an automobile cooling system, said nipple comprising: 
 a tubular body having an outer surface, a first end having threads adapted for engagement with threads of a cooling system component, a second end adapted to be received in a cooling system hose, and an axial bore extending there through;    said second end having an outwardly extending flange and being configured for a hose to slide over said flange; and    said bore configured at said second end for receiving a tool therein for rotating said nipple about the axis thereof.    
     
     
         15 . The nipple of  claim 14 , said bore being configured at said second end for receiving a hex tool therein.  
     
     
         16 . The nipple of  claim 14 , said outer surface of said nipple having at least one outwardly extending formation between said threads and said flange functioning as a stop for a hose inserted on said nipple.  
     
     
         17 . The nipple of  claim 16 , said at least one formation including a plurality of spaced wings.  
     
     
         18 . The nipple of  claim 16 , said at least one formation including a circumferential ring about said nipple.  
     
     
         19 . The nipple of  claim 18 , including a circumferential depression adjacent said circumferential ring on a side of said ring toward said second end.  
     
     
         20 . The nipple of  claim 14 , made by cold forming.