Abstract: Disclosed is a method for manufacturing a stator for an eccentric screw motor where at least two milling heads are used for machining the inner wall of the stator tube, wherein, at the start of the machining, one of the milling heads is brought to a predetermined position near the stator with respect to the end of the stator tube, the milling head is fed into the tube interior along its linear axis from this predetermined position, and a thread is machined until the milling head reaches at least the longitudinal center of the stator tube or exceeds a predetermined value, and the second milling head starts its machining of the inner wall surface of the stator tube at this point, wherein the milling head is moved along its linear axis and rotated about its rotary axis until the milling head reaches the centre of the stator tube.

Abstract: A stator for an eccentric screw pump with an internal hollow space with a helically coiled inner contour for accommodating a rotor. The stator includes a stator core arranged in a stator casing, which stator core includes at least two radially separable core parts. According to the invention, the at least two radially separable core parts are each made from a metallic material or a technical ceramic material. The stator casing is a stator tube and is made of a metallic material. The stator casing is shrink-fitted onto the stator core. The invention also relates to an eccentric screw pump and a method for producing a stator.

Abstract: Disclosed is a method for manufacturing a stator for an eccentric screw motor where at least two milling heads are used for machining the inner wall of the stator tube, wherein, at the start of the machining, one of the milling heads is brought to a predetermined position near the stator with respect to the end of the stator tube, the milling head is fed into the tube interior along its linear axis from this predetermined position, and a thread is machined until the milling head reaches at least the longitudinal center of the stator tube or exceeds a predetermined value, and the second milling head starts its machining of the inner wall surface of the stator tube at this point, wherein the milling head is moved along its linear axis and rotated about its rotary axis until the milling head reaches the centre of the stator tube.

Abstract: A stator for an eccentric screw pump with an internal hollow space with a helically coiled inner contour for accommodating a rotor. The stator includes a stator core arranged in a stator casing, which stator core includes at least two radially separable core parts. According to the invention, the at least two radially separable core parts are each made from a metallic material or a technical ceramic material. The stator casing is a stator tube and is made of a metallic material. The stator casing is shrink-fitted onto the stator core. The invention also relates to an eccentric screw pump and a method for producing a stator.

Abstract: A method and apparatus for fault detection of series diodes in rectifiers is disclosed, wherein the voltages across one or both of the individual diodes, and/or the voltage across the pair of diodes are measured to determine a ratio between two of those voltages. The ratio is then analyzed to determine if a fault (e.g., a short circuit or an open circuit) is present. In some embodiments, circuitry can be included to compensate for the normal variations in diode characteristics (e.g., reverse leakage current, reverse recovery charge) between the pair of series diodes to minimize the potential for erroneous fault detection.

Abstract: The present invention relates to a method for producing a polymer material filled with longer fibers, wherein the fibers, which typically have a residual moisture content of approximately 5 to 8% and a minimum length of more than 2 mm, and the carrier material are mixed and heated in a reactor or cutter-compacter, constantly moving them and optionally comminuting the carrier material, and constantly maintaining the pourability and/or lumpiness. According to the invention, the conditions, and particularly the temperature, in the reactor are adjusted so as to dry the fibers to the lowest residual moisture possible, at which the fibers are just barely sufficiently flexible so as not to break during processing in the reactor, or during an optionally following compression step, for example extrusion.

Abstract: The present invention relates to a method for producing a polymer material filled with longer fibers, wherein the fibers, which typically have a residual moisture content of approximately 5 to 8% and a minimum length of more than 2 mm, and the carrier material are mixed and heated in a reactor or cutter-compacter, constantly moving them and optionally comminuting the carrier material, and constantly maintaining the pourability and/or lumpiness. According to the invention, the conditions, and particularly the temperature, in the reactor are adjusted so as to dry the fibers to the lowest residual moisture possible, at which the fibers are just barely sufficiently flexible so as not to break during processing in the reactor, or during an optionally following compression step, for example extrusion.

Abstract: A method and apparatus for fault detection of series diodes in rectifiers is disclosed, wherein the voltages across one or both of the individual diodes, and/or the voltage across the pair of diodes are measured to determine a ratio between two of those voltages. The ratio is then analyzed to determine if a fault (e.g., a short circuit or an open circuit) is present. In some embodiments, circuitry can be included to compensate for the normal variations in diode characteristics (e.g., reverse leakage current, reverse recovery charge) between the pair of series diodes to minimize the potential for erroneous fault detection.

Abstract: A gear set for differential shafts of internal combustion engines. The gear set includes a toothed wheel which can be moved parallel to its axis for adjustment of backlash. A spacer is arranged removably between tooth faces of interacting teeth of engaging toothed wheels and serves to adjust the backlash between the toothed wheels. The spacer is arranged free of play between corresponding tooth faces of the toothed wheels by way of the movable toothed wheel which can be moved with a predetermined force to the other toothed wheels.

Abstract: A gear set for differential shafts of internal combustion engines. The gear set includes a toothed wheel which can be moved parallel to its axis for adjustment of backlash. A spacer is arranged removably between tooth faces of interacting teeth of engaging toothed wheels and serves to adjust the backlash between the toothed wheels. The spacer is arranged free of play between corresponding tooth faces of the toothed wheels by way of the movable toothed wheel which can be moved with a predetermined force to the other toothed wheels.

Abstract: A method of obtaining a desired tooth flank backlash for a transmission having at least two interlocking toothed gears, comprises applying a removable coating on at least one of the toothed gears for purposes of setting the backlash, the coating comprising a mixture containing a bonding agent and a filling material; adjusting the least two interlocking toothed gears with the coating relatively to each another essentially play-free or with only small play; and removing the coating.

Abstract: A method of obtaining a desired tooth flank backlash for a transmission having at least two interlocking toothed gears, comprises applying a removable coating on at least one of the toothed gears for purposes of setting the backlash, the coating comprising a mixture containing a bonding agent and a filling material; adjusting the least two interlocking toothed gears with the coating relatively to each another essentially play-free or with only small play; and removing the coating.