{HEAD ~ The gas economizer} 2, wherein {TAIL ~ one end} of a tube is connected to the upper shell in register with the opening in the upper shell and the other end of the tube is adapted to be operatively coupled to an intake manifold of an internal combustion engine 
wherein
{ HEAD ~ The gas economizer } 2 , wherein { TAIL ~ one end } of a tube is connected to the upper shell in register with the opening in the upper shell and the other end of the tube is adapted to be operatively coupled to an intake manifold of an internal combustion engine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH