Patent ID: 8590804

Claim:
A two stage kinetic energy spray device comprising: a first stage having a first nozzle, the first nozzle having a first nozzle receiving end that receives a feedstock and carrier gas stream, and a first nozzle injection end located axially to the first nozzle receiving end, the first nozzle injection end receiving the feedstock and carrier gas stream from the first nozzle receiving end; a second stage having a second nozzle, the second nozzle having a gas receiving portion that receives an effluent gas, a convergent portion that is downstream from the gas receiving portion and a divergent portion that is downstream from the convergent portion, the convergent portion and the divergent portion meeting at a throat of the second nozzle; wherein the first nozzle is located annularly within the second nozzle; wherein the first nozzle is one of a convergent nozzle and a straight nozzle; wherein the feedstock and the carrier gas stream form a particle stream, and the particle stream is accelerated to a first velocity in the first nozzle; wherein the effluent gas is accelerated to a second velocity in the second nozzle; wherein the first nozzle injection end is located in the second nozzle divergent portion, and wherein the first nozzle injection end has at least one chevron.