Pipeline heated by a diagonal feeding, band-form, electrical hea

Details Pipeline heated by a diagonal feeding, band-form, electrical hea Pipeline heated by a diagonal feeding, band-form, electrical hea

1984-03-12

1987-02-24

Albritton, C. L.

Electric heating

Heating devices

With heating unit structure

219535, 219537, 219497, 338295, 338320, H05B 308

Patent

active

046459120

ABSTRACT:
A band-form, electrically heat-generating apparatus having two parallel electrodes and resistance elements intervened therebetween over the entire length of the electrodes, and connected to both the electrodes in parallel and individual feeding points on each of the respective electrodes, which apparatus is characterized in that the feeding point to one of the electrodes and that to another of the electrodes are located at diagonal positions relative to the parallelogram formed by the two electrodes and the outermost two of the resistance elements to form a heat-generating unit. A plurality of such a heat-generating apparatus may be formed by connecting such a heat-generating unit in series to form a heat-generating apparatus; and the electrically heat-generating apparatus may further be provided with a circuit for detecting or protecting voltage abnormalities. With the above apparatus, a more uniform heat generation is possible as compared with conventional apparatus.

REFERENCES:
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patent: 3448246 (1969-06-01), Armbruster
patent: 3524966 (1970-08-01), Ando
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patent: 3780250 (1973-12-01), Ando
patent: 3784785 (1974-01-01), Noland
patent: 3792232 (1974-02-01), Zarenko
patent: 4017715 (1977-04-01), Whitney et al.
patent: 4031356 (1977-06-01), Nube
patent: 4228418 (1980-10-01), Piedmont et al.
patent: 4272471 (1981-06-01), Walker
patent: 4436986 (1984-03-01), Carlson

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