Electric heating – Metal heating – By arc
Patent
1987-09-24
1989-10-31
Paschall, M. H.
Electric heating
Metal heating
By arc
219 1055F, 219 1055M, 21912147, 427 12, 427 34, 118623, B23K 900
Patent
active
048779385
ABSTRACT:
In the internal coating of a tube of an electrically insulating material by a second electrically insulating material by reactive deposition of the second electrically insulating material from a gas mixture which is passed through the tube, the desposition is activated by a plasma which is produced by microwaves and is reciprocated in the tube. A method with low energy consumption and a device of a simple construction are made possible in that the plasma is excited by TE 011 resonance in a cylindrical resonator.
REFERENCES:
patent: 3461261 (1969-08-01), Lewis et al.
patent: 3560694 (1971-02-01), White
patent: 3597567 (1971-08-01), Johnson
patent: 4101411 (1978-07-01), Suzuki et al.
patent: 4292063 (1981-09-01), Abe
patent: 4423303 (1983-12-01), Hirose et al.
patent: 4543465 (1985-09-01), Sakudo et al.
De Jongh Petrus F.
Rau Hans
Kraus Robert J.
Paschall M. H.
U.S. Philips Corporation
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