Patent ID: 9095863
Filing Date: 2015-08-04
Classification: B05B,C23C

Abstract:
1. A thermal spray gun comprising: a lower air manifold assembly that is operative to receive a propane input stream and a main air input stream, to divide said main air input stream into a combustion air amplifier air input stream and an upper air amplifier air input stream and, to combine said propane input stream with said combustion air amplifier air input stream to produce a combustion gas and air stream; a heater assembly that is operative to receive said combustion gas and air stream, said heater assembly comprising a perforated heater plate and a diverter cone; an igniter that is operative to ignite said combustion gas and air stream to produce a flame on said perforated heater plate, said igniter comprising an electrode tip; an upper air manifold assembly that is operative to receive said upper air amplifier air input stream and to produce a diverter air amplifier high velocity air stream and a cooling air amplifier high velocity air stream, said diverter air amplifier high velocity air stream being operative to draw a diverter air inlet stream into said upper air manifold assembly to produce an inner diverter outlet steam and an outer diverter outlet stream, and said cooling air amplifier high velocity air stream acting to draw a cooling air inlet stream into said upper air manifold assembly to produce a cooling air outlet stream; and a feed tube assembly that is operative to receive a powder feed input stream and to produce a powder feed outlet stream, said feed tube assembly comprising a feed tube tip; wherein said inner diverter outlet stream is operative to cool said feed tube tip and said diverter cone and to surround said powder feed outlet stream; and wherein said outer diverter outlet stream is operative to urge said flame radially outward.