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AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsCarl-Friedrich Meyer, Hans-Joachim Scheibe
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The invention relates to an electric resistance element, which can be electromechanically regulated. A layer of a predeterminable width and thickness, consisting of an electrically conductive material with a constant specific electric resistance, is located on a substrate. At least one electric contact connection is also provided and an electric contact element can be displaced mechanically along the surface of said layer. The aim of the invention is to provide an appropriate resistance element that can be produced cost-effectively, with reproducible electric characteristics and a high resistance to wear, without a requirement for additional lubrication. To achieve this, according to the invention, a wear-resistant layer of uniform thickness is configured on the electrically condutive layer situated on the substrate. Said layer consists exclusively of a carbon similar to diamond and has a higher specific electric resistance than that of the layer. The layer of carbon similar to diamond thus lies in contact with the mechanically displaceable contact element.
An electromechanically controllable electric resistance element wherein a layer of electrically conductive material having a constant specific electric resistance is located on a substrate in a predetermined width and length, wherein said layer has at least one electric contacting terminal, and an electric contact element is movable along said surface of said layer, wherein a wear resisting layer is provided on said electrically conductive layer, said wear resisting layer having a constant thickness and specific electric resistance higher than that of said electrically conductive layer, said wear resisting layer being exclusively made of carbon similar to diamond which is in contact with said mechanically movable contact element.
Dependencies are inferred from the claim text.