Electrical resistance heater

Details Electrical resistance heater Electrical resistance heater

1987-04-02

1989-03-21

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219528, 219553, 338308, H05B 336

Patent

active

048145866

ABSTRACT:
The heater includes a paper or plastic substrate on which is printed a semi-conductor pattern (typically a colloidal graphite ink) having (a) a pair of longitudinal stripes extending parallel to and spaced apart from each other and (b) a plurality of identical bars spaced apart from each other and extending between and electrically connected to the stripes. A metallic conductor (typically copper stripping) overlies each of the longitudinal stripes in face-to-face engagement therewith, and the conductors are held in tight engagement with the stripes by a sealing layer that overlies the metallic conductors and is sealed, at opposite sides of the semi-conductor stripe associated with the particular metallic conductor, to portions of the substrate that are free from the printed semi-conductor pattern.

REFERENCES:
patent: 2475379 (1949-07-01), Stong
patent: 2629166 (1953-02-01), Marsten
patent: 3257498 (1966-06-01), Kahn
patent: 3296574 (1967-01-01), Tassara
patent: 3627981 (1971-12-01), Kuhn
patent: 3813519 (1974-05-01), Jochim
patent: 3878362 (1975-04-01), Stinger
patent: 4137447 (1979-01-01), Bodz
patent: 4429216 (1984-01-01), Brigham

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