Pipe

Abstract

A pipe is disclosed. The pipe has an elongate body having an inlet opening and a mouthpiece with an aperture. An internal bore is provided within the elongate body connecting the inlet opening and the mouthpiece aperture. The internal bore has a bolus chamber with an inlet orifice aligned with the inlet opening and an exit orifice aligned with the internal bore opposite the inlet orifice. The inlet orifice has a smaller diameter than the exit orifice. The pipe is also self-extinguishing. A pipe with a cavity for holding combustible material which has inlet and exit orifices that create a venturi effect when the pipe is in use is also disclosed.

1 . A pipe comprising:
 elongate body having an inlet opening and a mouthpiece with an aperture;   an internal bore within the elongate body connecting the inlet opening and the mouthpiece aperture, the internal bore having a bolus chamber with an inlet orifice aligned with the inlet opening and an exit orifice aligned with the internal bore opposite the inlet orifice, the inlet orifice having a smaller diameter than the exit orifice, wherein the pipe is self-extinguishing.   
     
     
         2 . The pipe of  claim 1 , wherein the pipe is formed of D2 steel. 
     
     
         3 . The pipe of  claim 1 , wherein the size difference between the inlet orifice and the exit orifice is a ratio ranging from 1:1.12 to 1:1.3. 
     
     
         4 . The pipe of  claim 1 , wherein inlet orifice may range from between approximately 0.050 inches to approximately 0.125 inches in diameter. 
     
     
         5 . The pipe of  claim 1 , wherein the exit orifice may range from approximately 0.065 inches to approximately 0.140 inches in diameter. 
     
     
         6 . The pipe of  claim 1 , wherein the elongate body has a removable cap. 
     
     
         7 . The pipe of  claim 6 , wherein the removable cap and elongate body have mating threads. 
     
     
         8 . The pipe of  claim 6 , wherein the removable cap has an internal cavity forming a portion of the bolus chamber and has the inlet opening and inlet orifice. 
     
     
         9 . A pipe comprising:
 an internal bore with a cavity for holding combustible material which has inlet and exit orifices that create a venturi effect when the pipe is in use.   
     
     
         10 . The pipe of  claim 9 , wherein the pipe is formed of D2 steel. 
     
     
         11 . The pipe of  claim 9 , wherein the pipe is self-extinguishing. 
     
     
         12 . The pipe of  claim 9 , wherein a diameter size difference exists between the inlet orifice and the exit orifice in a ratio ranging from 1:1.12 to 1:1.3. 
     
     
         13 . The pipe of  claim 12 , wherein inlet orifice ranges from between approximately 0.050 inches to approximately 0.125 inches in diameter. 
     
     
         14 . The pipe of  claim 12 , wherein the exit orifice ranges from approximately 0.065 inches to approximately 0.140 inches in diameter. 
     
     
         15 . A pipe comprising:
 a bolus chamber having an inlet orifice and an exit orifice which is larger than the inlet orifice.   
     
     
         16 . The pipe of  claim 15 , wherein the pipe is formed of D2 steel. 
     
     
         17 . The pipe of  claim 15 , wherein the size difference between the inlet orifice and the exit orifice is a ratio ranging from 1:1.12 to 1:1.3. 
     
     
         18 . The pipe of  claim 15 , wherein the pipe is self-extinguishing. 
     
     
         19 . The pipe of  claim 15 , wherein the pipe bolus chamber creates a venturi effect in use. 
     
     
         20 . The pipe of  claim 15 , wherein inlet orifice may range from between approximately 0.050 inches to approximately 0.125 inches in diameter and the exit orifice may range from approximately 0.065 inches to approximately 0.140 inches in diameter.