Plasma arc cutting torch nozzle

Details Plasma arc cutting torch nozzle Plasma arc cutting torch nozzle

2005-11-08

2005-11-08

Hoang, Tu (Department: 3742)

Electric heating

Metal heating

By arc

C219S121500

Reexamination Certificate

active

06963045

ABSTRACT:
A nozzle for a plasma arc cutting torch is provided with an electrically conductive, heat resistant insert, preferably tungsten or a tungsten alloy. As an alternative to the insert, the material can be coated on the entire inner surface of the nozzle. In either embodiment, the material also can be coated on the outer surface of the nozzle.

REFERENCES:
patent: 4748312 (1988-05-01), Hatch et al.
patent: 4954688 (1990-09-01), Winterfeldt
patent: 5105061 (1992-04-01), Blankenship
patent: 5484978 (1996-01-01), Hedberg et al.
patent: 5587093 (1996-12-01), Aston
patent: 5866872 (1999-02-01), Lu et al.
patent: 5897059 (1999-04-01), Muller
patent: 6337460 (2002-01-01), Kelkar et al.

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