Electric heating – Metal heating – By arc
Patent
1997-10-15
1999-07-20
Paschall, Mark
Electric heating
Metal heating
By arc
21912152, 21912151, 31511151, 356316, B23K 1000
Patent
active
059252669
ABSTRACT:
In a mounting apparatus for an induction coupled plasma generator, a housing assembly has a receptacle with a central opening aligned over a housing wall opening, electrical contact rings in the receptacle, and a gas block with a central aperture aligned with the openings. An outer passage in the gas block receives a plasma forming gas and extends to the central aperture. A mounting assembly has a mounting member with an annular contact ring, a second gas block, and a gas tube and a sample tube extending from the second gas block. The second gas block has an inner passage extending into the gas tube. The mounting assembly removably engages to the housing assembly, with the mounting member on the receptacle, the second gas block in the first gas block, and the rings in contact. The tubes extend to a load coil for the plasma, and the passages align to convey the plasma forming gas into the gas tube. Provision is made for axial adjustment of the mounting assembly to position the tubes axially with respect to the coil.
REFERENCES:
patent: 4482246 (1984-11-01), Meyer et al.
patent: 4766287 (1988-08-01), Morrisroe et al.
patent: 5200595 (1993-04-01), Boulos et al.
Aker David
Ingham Herbert S.
Paschall Mark
The Perkin-Elmer Corporation
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