Electric heating sheet and method of making the same
First Claim
Patent Images
1. An electric heating sheet, comprising:
- a heating element comprising a first cured conductive coating;
at least a pair of electrodes spaced apart from each other and disposed in electrical contact with the heating element to impart a pattern of current distribution through the heating element when electrical current is supplied to the electrodes;
one or more current distributing elements of greater conductivity than the first cured conductive coating disposed in electrical contact with the first cured conductive coating of the heating element, the current distributing elements being dimensioned and configured to influence the pattern of current distribution through the heating element;
a substrate on which the heating element, the electrodes and the current distributing elements are disposed; and
a first insulating layer substantially covering the heating element, the electrodes and the current distributing elements.
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Accused Products
Abstract
An electric heating sheet (10) includes a heating element (16) formed of a first cured conductive coating disposed on a substrate (12). A pair of electrodes (18) may be disposed at opposite ends of the heating element (16) and in electrical contact therewith. The electrodes (18) may be formed of a second cured conductive coating and one or more elements for configuring current distribution throughout the heating element may also be provided. A first layer (20) formed of an electrically insulating material may be disposed over the electrodes (18) and the heating element (16). A method of manufacturing the heating sheet is also presented.
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Citations
17 Claims
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1. An electric heating sheet, comprising:
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a heating element comprising a first cured conductive coating;
at least a pair of electrodes spaced apart from each other and disposed in electrical contact with the heating element to impart a pattern of current distribution through the heating element when electrical current is supplied to the electrodes;
one or more current distributing elements of greater conductivity than the first cured conductive coating disposed in electrical contact with the first cured conductive coating of the heating element, the current distributing elements being dimensioned and configured to influence the pattern of current distribution through the heating element;
a substrate on which the heating element, the electrodes and the current distributing elements are disposed; and
a first insulating layer substantially covering the heating element, the electrodes and the current distributing elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification