Electric heating – Metal heating – By arc
Patent
1986-05-27
1988-02-23
Paschall, M. H.
Electric heating
Metal heating
By arc
219121PM, 219 1043, 219121P, 31511151, B23K 900
Patent
active
047272368
ABSTRACT:
An induction plasma tube in combination with a current concentrator. The rent concentrator has a substantially cylindrical body having an open end and a partially closed end which defines an aperture. A first slot extends the longitudinal length of the cylindrical body and a second slot extends radially outward from the aperture. Together the first and second slots form a single L-shaped slot. The current concentrator is disposed within a volume bounded by an induction coil substantially along the axis thereof, and when power is applied to the induction coil a concentrated current is induced within the current concentrator aperture. The concentrator is moveable relative to the coil along the longitudinal axis of the coil to control the amount of current which is concentrated at the aperture.
REFERENCES:
patent: 3586905 (1971-06-01), Bignell
patent: 4431891 (1984-02-01), Forstner et al.
patent: 4431901 (1984-02-01), Hull
patent: 4551609 (1985-11-01), Falk
patent: 4631381 (1986-12-01), Delage et al.
Bieniewski Thomas M.
Hull Donald E.
Gaetjens Paul D.
Hightower Judson R.
Paschall M. H.
The United States of America as represented by the Department of
Wilson Ray G.
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