Abstract: A method for obtaining information about a layer of an organic solderability preservative on a printed circuit board, the method including Providing or producing a printed circuit board (16) having a copper layer (18) covering a part of an area of the printed circuit board (16), Providing a fluorescence measuring system (10), the method including following steps a) Obtaining (S2) information about the location of the openings (21) on the printed circuit board (16), b) Selecting (S3) at least one of the openings (21), thereby obtaining at least one selected opening, c) Moving (S4) the radiation source (11) and the printed circuit board (16) relatively to each other, d) Detecting (S5) the fluorescent radiation (23).

Abstract: A method for depositing a coating of a first metal onto a workpiece 12 which exposes a second metal by a) providing a bath liquid 16 containing components containing ions of the first metal to be deposited, at least one complexing agent for the second metal and at least one acid, b) depositing the coating of first metal from the bath liquid 16 onto the workpiece 12, c) feeding the bath liquid 16 into a tank 18, d) cooling the bath liquid 16 in the settling tank 18 for generating a precipitate and filtrate, the precipitate comprised of the second metal and the at least one complexing agent, f) returning the filtrate to the bath liquid 16 and g) replenishing bath components to the bath liquid 16. In separating precipitate from the filtrate a pressure difference is generated by the filter.

Abstract: A tensioning device for an endless drive is provided. The tensioning device comprises a tensioning lever and a tensioning piston. The tensioning lever comprises a connection socket, and the tensioning piston comprises a connection head. A pivotable joint connection is implemented between the tensioning lever and the tensioning piston by means of the connection head. The connection socket defines a reception opening, and at least certain areas of the connection head are, by means of the connection socket and at least one boundary area formed thereon, encompassed in the reception opening in such a way that the connection head is secured against separation from the connection socket in a direction opposite to the direction of operation of the tensioning piston.

Abstract: The invention relates to a timing drive for an internal combustion engine, comprising a crankshaft, at least one camshaft, a driven gear that is connected to the crankshaft, at least one driving gear which drives the associated camshaft and a transmission that interconnects the driven gear and the at least one driving gear. An electric motor is provided which engages with the transmission in an offset manner relative to the crankshaft and the at least one camshaft as well as in an offset manner relative to the associated driven gear and the associated at least one driving gear by means of an intermediate gear. Furthermore, a control device is provided, with the aid of which the electric motor can be triggered in such a way that additional torque and/or an additional torque profile can be introduced into the transmission and/or can be tapped from the transmission based on at least one operational parameter and/or at least one operational situation of the transmission. Also disclosed is a corresponding method.

Abstract: Link chain with improved wear resistance as well as method of manufacturing such a link chain. For manufacturing of a link chain, several chain links (39; 40) comprising link pins (41) or plates provided with coatings being applied by means of a PVD process are assembled. The coatings consist of hard material layers and/or slide material layers. It is possible that no PVD coating is provided on a transition zone (1a; 4) of elements (41; 42) used for the manufacturing of the chain links predetermined for connection with another element (42; 41).

Abstract: Link chain with improved wear resistance as well as method of manufacturing such a link chain. For manufacturing of a link chain, several chain links (39; 40) comprising link pins (41) or plates provided with coatings being applied by means of a PVD process are assembled. The coatings consist of hard material layers and/or slide material layers. It is possible that no PVD coating is provided on a transition zone (1a; 4) of elements (41; 42) used for the manufacturing of the chain links predetermined for connection with another element (42; 41).