Plasma lineation electrode

Details Plasma lineation electrode Plasma lineation electrode

2008-07-08

2008-07-08

Paschall, Mark (Department: 3742)

Electric heating

Metal heating

By arc

C219S121470, C219S076160, C219S121520, C315S111210

Reexamination Certificate

active

11285151

ABSTRACT:
A plasma spray device is provided. The plasma spray device includes a plasma chamber region for having a plasma formed and a throat region coupled to the plasma chamber region. The throat region has an end surface and an axial bore. The axial bore is formed substantially along a longitudinal axis of the throat region, and has a non-circular cross-sectional shape. The axial bore at the end surface is for ejecting a plasma stream. The axial bore may include a plurality of grooves formed substantially along the longitudinal axis of the throat region. The cross-sectional shape of the axial bore may alternatively be defined by a plurality of overlapping substantially circular lobes. The plasma stream has a flow that is lineated before the plasma stream is ejected from the axial bore. The plasma stream has an overall particle pattern angle of less than about 50° after the plasma stream exits the axial bore.

REFERENCES:
patent: 4136273 (1979-01-01), Eujita et al.
patent: 4916273 (1990-04-01), Browning
patent: 5122632 (1992-06-01), Kinkelin
patent: 5900272 (1999-05-01), Goodman
patent: 6209312 (2001-04-01), Singer et al.
patent: 6679880 (2004-01-01), Yang et al.
patent: 6987238 (2006-01-01), Horner-Richardson et al.

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