Abstract: In a direct contact plug-in connection having a circuit board, which has contact surfaces on its one side, and having a direct contact plug that is plug-connectible to the circuit board, which has contact elements for the electrical direct contacting of the contact surfaces of the circuit board, the contact surfaces are provided on a circuit board section that runs transversely to the plugging direction of the plug connection, the contact elements each contacting the contact surfaces, using their front end face, in the plugging direction.

Abstract: The invention relates to a circuit arrangement (1) comprising an electrical and/or electronic circuit unit (10), which comprises a circuit carrier (14), on which at least one electrical and/or electronic component (12) is arranged, and at least one connection region (5) with at least one contact unit (14.2) for electrically contact-connecting the electrical and/or electronic circuit unit (10) to other electrical and/or electronic structural units, wherein at least one region of the circuit unit (10) is arranged in a housing unit (20) sealed relative to the surroundings. According to the invention, the housing unit (20) comprises a protective compound which surrounds the at least one region of the circuit unit (10) in a sealing fashion and surrounds the at least one connection region (5) in such a way that the at least one contact unit (14.2) is embedded at least at its side areas into the protective compound (22).

Abstract: In an electrical contact for plug-in connections, in particular for the direct contacting of contact surfaces of a circuit board, the contact having a contact housing which includes an inwardly deflectable primary lance, which outwardly projects beyond the contact housing, counter to the insertion direction, for retaining the contact inserted into a contact chamber of a mating plug, the primary lance has a free end which is offset inwardly relative to its outwardly projecting lance section and extends counter to the insertion direction, which free lance end is outwardly overlapped by a housing stop of the contact housing.

Abstract: A removable electrical plug-in connection comprising a connector and a mating connector, the mating connector including a contact element, in particular a p.c. board, or similar, having at least one contact area which is connectable at least in part to the connector. It is provided that the connector includes at least one clamping element which grips at least in part around the contact element in its contact position, and this clamping element presses at least a part of the contact element against the contact area for establishing the electrical plug-in connection.

Abstract: In an electrical plug connector in the form of a socket contact, having an inner contact part for the electrical contacting of a pin and having an external retention spring surrounding the inner contact part, the inner contact part is formed of nickel brass.

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: An electric plug-in connector includes a plug receptacle provided for insertion of a contact pin, a contact lamina pivotally mounted on the plug-in connector housing, its free end being directed in the insertion direction of the contact pin, and a holding arm pivotably mounted on the plug-in connector housing, which protrudes at its free end into the plug receptacle in the ready-to-insert starting state of the plug-in connector and also holds back the contact lamina that is prestressed into the plug receptacle, the contact lamina and/or the opposite housing wall being made of an electrically conducting material for contacting the inserted contact pins.

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: An electric plug-in connector includes a plug receptacle provided for insertion of a contact pin, a contact lamina pivotally mounted on the plug-in connector housing, its free end being directed in the insertion direction of the contact pin, and a holding arm pivotably mounted on the plug-in connector housing, which protrudes at its free end into the plug receptacle in the ready-to-insert starting state of the plug-in connector and also holds back the contact lamina that is prestressed into the plug receptacle, the contact lamina and/or the opposite housing wall being made of an electrically conducting material for contacting the inserted contact pins.

Abstract: A removable electrical plug-in connection comprising a connector and a mating connector, the mating connector including a contact element, in particular a p.c. board, or similar, having at least one contact area which is connectable at least in part to the connector. It is provided that the connector includes at least one clamping element which grips at least in part around the contact element in its contact position, and this clamping element presses at least a part of the contact element against the contact area for establishing the electrical plug-in connection.

Abstract: A fuel supply system, having a housing, in which a pistonlike element is disposed longitudinally displaceably in a bore and is guided sealingly in the bore by a guide portion. On one end, the guide portion adjoins a first fuel-filled chamber, and on its other end it adjoins a second fuel-filled chamber. At least one recess extending at least approximately in the circumferential direction is embodied in the guide portion of the pistonlike element and extends over at least part of the circumference of the pistonlike element and, viewed in the longitudinal direction of the pistonlike element, has an asymmetrical cross section.

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.

Abstract: A method is proposed for preparing a structured metallic surface of a body or for the structuring close to the surface or the generation of metallic structures, first of all on a first metal layer or on a first intermetallic layer a second metal layer or a second intermetallic layer, the second layers differing from the first layers, being generated; and thereafter at least the second metal layer or the second intermetallic layer being heated up region by region in such a way that, in that location, there is formed an intermetallic compound using the material of the first intermetallic layer or the first metal layer and the material of the second metal layer or the second intermetallic layer, into which surface regions are embedded, which are at least essentially made of the material of the second metal layer or the second intermetallic layer.

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 modification of frictional state and surface condition of an electrical contact surface to reduce the insertion forces for establishment of an electrical plug connection and also to achieve protection from oxidation and fretting corrosion is provided. BY controlled melting of a contact surface that is applied onto a support material, a lubricant film applied onto the contact surface is diffused, by using a laser, substantially without modification into the liquefied contact surface and resolidified together with the latter, so that the lubricant film is incorporated into the contact surface.

Abstract: A contact element as part of a plug connector is described, which is mountable in a connector housing and provides a contact zone to establish an electrical connection, which may be disconnected again, with a mating connector having at least one blade. The contact zone has at least two contact parts that are positioned at a distance from each other and are provided to receive the blade, each contact part having two contact points.

Abstract: A method is proposed for preparing a structured metallic surface of a body or for the structuring close to the surface or the generation of metallic structures, first of all on a first metal layer or on a first intermetallic layer a second metal layer or a second intermetallic layer, the second layers differing from the first layers, being generated; and thereafter at least the second metal layer or the second intermetallic layer being heated up region by region in such a way that, in that location, there is formed an intermetallic compound using the material of the first intermetallic layer or the first metal layer and the material of the second metal layer or the second intermetallic layer, into which surface regions are embedded, which are at least essentially made of the material of the second metal layer or the second intermetallic layer.