Electrical heater
AssigneeHeat Trace Limited
InventorsJason Daniel Harold O'CONNOR, Peter Richard HOWE, Ian James SCOTT
Life of this patent
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Abstract
An electrical heater comprising; a first conductor, a second conductor, and a heating element disposed between the first conductor and the second conductor, wherein the heating element comprises an electrically conductive material distributed within a first electrically insulating material, wherein the first electrically insulating material is an ethylene acetate or ethylene acrylate copolymer, and wherein the electrical heater comprises a stack, the first conductor, the second conductor and the heating element comprising layers of the stack.
Claims21
1-56. (canceled)
An electrical heater comprising;
- a first conductor,
- a second conductor, and
- a heating element, wherein the heating element comprises an electrically conductive material distributed within an ethylene acetate or ethylene acrylate copolymer, and wherein:
- the heating element is disposed between the first conductor and the second conductor,
- the first conductor, the second conductor and the heating element form a stack, and
- the heating element has a first thickness in a first region and a different thickness in a second region.
A method of manufacturing an electrical heater, the electrical heater comprising a first conductor, an ethylene acetate or ethylene acrylate compound, and a second conductor arranged in a stack, the ethylene acetate or ethylene acrylate compound comprising an electrically conductive material distributed within an ethylene acetate or ethylene acrylate copolymer and being disposed between the first conductor and the second conductor, the method comprising;
- raising the temperature of the ethylene acetate or ethylene acrylate compound so as to melt the ethylene acetate or ethylene acrylate compound;
- applying force to the first conductor and the ethylene acetate or ethylene acrylate compound so as to force substantially all of the air from between the first conductor and the ethylene acetate or ethylene acrylate compound and from within the ethylene acetate or ethylene acrylate compound;
- and
- cooling the ethylene acetate or ethylene acrylate compound to ambient temperature such that, when cooled, the ethylene acetate or ethylene acrylate compound is arranged to form an ethylene acetate or ethylene acrylate element and is bonded to the first conductor.
A method of manufacturing an electrical heater, the electrical heater comprising a first conductor, an ethylene acetate or ethylene acrylate compound, and a second conductor arranged in a stack, the ethylene acetate or ethylene acrylate compound comprising an electrically conductive material distributed within an ethylene acetate or ethylene acrylate copolymer and being disposed between the first conductor and the second conductor, the method comprising;
- raising the temperature of the ethylene acetate or ethylene acrylate compound so as to melt the ethylene acetate or ethylene acrylate compound;
- applying force to the first conductor, the second conductor, and the ethylene acetate or ethylene acrylate compound so as to force substantially all of the air from between the first conductor and the ethylene acetate or ethylene acrylate compound, and the ethylene acetate or ethylene acrylate compound and the second conductor and from within the ethylene acetate or ethylene acrylate compound;
- and
- cooling the ethylene acetate or ethylene acrylate compound to ambient temperature such that, when cooled, the ethylene acetate or ethylene acrylate compound is arranged to form an ethylene acetate or ethylene acrylate element and is bonded to the first conductor and the second conductor.
Dependencies are inferred from the claim text.