B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
48/18
B01J 19/14 (2006.01) B01J 7/00 (2006.01) C23C 4/12 (2006.01)
Patent
CA 1288597
ABSTRACT An apparatus for providing an oxygen-free working atmosphere wherein the waste gases from a conventional gas burner heating unit are compressed and used as buffer and propellant gases for spray guns for spraying molten metal or ceramic material onto a workpiece, where an expansion chamber is provided between the gas burner and the compressor and a constant pressure is maintained in the expansion chamber which is not less than atmospheric pressure.
543838
Apu North America Inc.
Osler Hoskin & Harcourt Llp
Putz Alban
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