Abstract: A device for drying fuel, e.g., in a motor vehicle, has a storage reservoir for a desiccant which absorbs moisture at temperatures below a regeneration temperature, and releases it again at temperatures above the regeneration temperature. Furthermore, a connection between the storage reservoir and a fuel tank storing the fuel is provided, the air situated above the fuel coming into operative connection with the desiccant via the connection. Using a heating device for heating the desiccant to a temperature above the regeneration temperature, the desiccant is able to be regenerated. The device for drying fuel enables removal of water contained in the fuel.

Abstract: A contact surface. for electrical contacts may include an Ag layer deposited on a copper-based substrate using galvanic methods. The Ag layer includes finely dispersed graphite particles in a quantity of, e.g., 1 to 3 weight % of the Ag layer, the graphite particles having a length in the range of, e.g., 0.5 to 20 ?m.

Abstract: An electrical contact, especially an electrical contact of a plug connector, includes a metallic substrate on which a contact layer is applied in the form of a gradient layer. The gradient layer is formed by at least two elements of which one is silver and forms a matrix for the second element or forms an alloy therewith, or of which one is tin and the other is phosphorus or of which one is indium and the other is tin.

Abstract: A contact surface for electrical contacts may include an Ag layer deposited on a copper-based substrate using galvanic methods. The Ag layer includes finely dispersed graphite particles in a quantity of, e.g., 1 to 3 weight % of the Ag layer, the graphite particles having a length in the range of, e.g., 0.5 to 20 ?m.

Abstract: An electric contact, in particular an electric contact of a plug-in connector, has a metallic substrate to which a contact layer is applied. The contact layer is arranged as a structured layer.

Abstract: A method of making contact surfaces for electrical contacts in which a metal is deposited on a copper-based substrate by a galvanic process. The metal is deposited on the substrate along with a placeholder material that can easily be dissolved out of the metal. The placeholder material is then dissolved out of the metal layer, and the remaining porous metal foam is impregnated with a lubricant.

Abstract: An electrical contact, especially an electrical contact of a plug connector, includes a metallic substrate on which a contact layer is applied in the form of a gradient layer. The gradient layer is formed by at least two elements of which one is silver and forms a matrix for the second element or forms an alloy therewith, or of which one is tin and the other is phosphorus or of which one is indium and the other is tin.