Fluid sprinkling – spraying – and diffusing – With means fusing solid spray material at discharge means – Wire or rod type supply
Reexamination Certificate
2005-05-03
2005-05-03
Jiang, Chen Wen (Department: 3744)
Fluid sprinkling, spraying, and diffusing
With means fusing solid spray material at discharge means
Wire or rod type supply
C239S400000
Reexamination Certificate
active
06886757
ABSTRACT:
A nozzle assembly for a HVOF thermal metallic spray coating system includes an inner tube, a middle tube and an outer tube which are concentrically arranged about an axis of the nozzle assembly and are spaced to provide annular, concentric gas flow passages for oxygen and gaseous fuel along with a central wire feed passage in an efficient, compact arrangement. A slotted nib and plug are fitted to the discharge end at the assembly and defined, together with the middle tube, an annular premix chamber for the combustible gases, and a plurality of circumferentially spaced mixing slots and a downstream mix end portion of the nib where complete mixing of the gases occurs prior to entry into the combustion chamber provided in an air cap. An annular passage between the air cap and outer tube communicates with a high pressure air source for establishing an envelope of air against the inside surface of the air cap to serve as a protective barrier layer from the atomized metal.
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Byrnes Larry Edward
Kramer Martin Stephen
Oberkampf William L.
Sumner Leslie K.
Teets Richard Earl
Brooks Cary W.
General Motors Corporation
Jiang Chen Wen
Sandia National Laboratories
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