Electric heating – Metal heating – By arc
Patent
1987-05-08
1988-11-29
Paschall, M. H.
Electric heating
Metal heating
By arc
219121PT, 219121PW, 219121PM, 219 75, 219121PR, 21912403, 21912152, 21912154, 21912157, 21912148, B23K 900
Patent
active
047884088
ABSTRACT:
An arc plasma generating system includes components for adjusting spacing between the cathode and the anode. A piston affixed to the cathode is slidingly positioned in a cylinder partitioning therein a first chamber and a second chamber. The first chamber is receptive of discharged cooling fluid at reduced pressure. A first valve selectively infuses pressurized control fluid into the second chamber such as to move the piston against the reduced pressure and thereby move the cathode axially in a first direction. A second valve selectively discharges the control fluid from the second chamber such that the reduced pressure in the first chamber moves the piston opposite the first direction. Telescoping tubing affixed between the piston and the end wall of the cylinder is located within the cylinder and conveys cooling fluid to the cathode. A flexible electrical cable connected between the cathode and a source of arc current is located within the cylinder member such as to be cooled by fluid therein.
REFERENCES:
patent: 2960594 (1960-11-01), Thorpe
patent: 3242305 (1966-03-01), Kane et al.
patent: 3558973 (1971-01-01), Pochert
patent: 4650956 (1987-03-01), Marhic et al.
patent: 4692584 (1987-09-01), Caneer, Jr.
patent: 4701590 (1987-10-01), Hutch
Bernecki Thomas F.
Budke Henry A.
Thompson Henry C.
Wlodarczyk Janusz
Grimes E. T.
Ingham H. S.
Masselle F. L.
Paschall M. H.
The Perkin-Elmer Corporation
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