Electrical heating unit
OwnerRichard A. Gordoninventor
Life of this patent
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Abstract
An heating unit made of a sheet of non-woven fibrous material having carbon particles embedded therein in a concentration to provide passage of low level electricity. A pair of electrodes disposed opposite each other and a wire connecting each electrode to a source of electricity.
Claims13
An electrical heating unit comprising a base sheet of fibrous material having metallic particles embedded therein in an arrangement throughout substantially the entire area of said sheet and in a concentration sufficient to permit a low level of electric current to pass through said sheet, and an electrode disposed near each of a pair of opposed edges of said sheet, connectable to a source of electric current, each of said electrodes comprising a narrow foil of highly conductive metal attached to the surface of said sheet and secured to each other and to said base sheet by a stitched thread passing therethrough, said base sheet and foils being sandwiched between a pair of resilient flexible insulating covers extending beyond the peripheral edges of said base sheet and being adhesively secured together to seal said heating unit therein.
Dependencies are inferred from the claim text.