Method and means for segmentally reducing heat output in a heat-

Details Method and means for segmentally reducing heat output in a heat- Method and means for segmentally reducing heat output in a heat-

1978-02-14

1979-02-27

Bartis, A.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

137341, 138 33, 219 1051, 219300, H05B 300, H05B 500, F16L 5300

Patent

active

041420934

ABSTRACT:
An improvement in a heat-generating pipe made up of a ferromagnetic pipe having an insulated conductor extending through it to a given point so that both the pipe and conductor may be connected in series with a power source of alternating current. The invention is directed to both a method and nonferromagnetic means for reducing the heat output over a desired segment of the pipe by reducing the magnetic field created by the alternating current flowing in the insulated conductor and that segment of the pipe.
The nonferromagnetic means comprises a portion of the insulated conductor that is exterior to the ferromagnetic pipe along the segment of reduced heat output so that it is magnetically decoupled from the pipe.

REFERENCES:
patent: 3293407 (1966-12-01), Ando
patent: 3575581 (1971-04-01), Ando
patent: 3629551 (1971-12-01), Ando
patent: 3632975 (1972-01-01), Ando et al.
patent: 3632976 (1972-01-01), Ando
patent: 3983360 (1976-09-01), Offermann

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