Abstract: A cutter is provided for cutting through obstructions disposed in the interior of pipes ranging in size from approximately 8? to approximately 15? in diameter or from approximately 12? to approximately 24? in diameter. The cutter has been reduced in size relative to known root cutters to be capable of being used with smaller-diameter pipes, but is sufficiently powerful to cut through obstructions, such as mineral deposits, for example, that known flexible cutters capable of being used with these smaller-diameter pipes are incapable of cutting through.

Abstract: A method for the discharging a DC-link capacitor includes electrically coupling the DC-link capacitor to at least one half-bridge, wherein the half-bridge comprises at least two switches and that are connected in series. The method includes at least one step in which the switches and of the half-bridge are controlled in order to carry out a simultaneous closing of the switches.

Abstract: A circuit board assembly has a circuit board and an electrical component embedded in a cured plastic layer, as well as a heat sink for cooling the component. The component is placed with a first side on a surface of the circuit board facing the heat sink and in electrical contact with the circuit board, and is located in a window in the cured plastic layer. Moreover, the component is materially bonded to a surface of the heat sink facing the circuit board at a second side lying opposite the first side, in particular through soldering or sintering. The plastic layer is injected and cured between the surface of the circuit board and the surface of the heat sink. In the production process, the material is melted by the heat at the same time as the injection, such that the component is materially bonded to the heat sink.

Abstract: The invention relates to a circuit board assembly and a production method therefor, as well as an inverter with such a circuit board assembly. The circuit board assembly has a circuit board (1) and an electrical component (3) embedded in a cured plastic layer (2), as well as a heat sink (4) for cooling the component (3). The component (3) is placed with a first side (3A) on a surface of the circuit board (1) facing the heat sink (4) and in electrical contact with the circuit board (1), and is located in a window (2A) in the cured plastic layer (2). Moreover, the component (3) is materially bonded to a surface of the heat sink (4) facing the circuit board (1) at a second side (3B) lying opposite the first side (3A), in particular through soldering or sintering. The plastic layer (2) is injected and cured between the surface of the circuit board (1) and the surface of the heat sink (4).

Abstract: A machine for the production of knitted goods includes a plurality of stitch-forming elements, at least one stitch-forming location, an associated spinning device at the at least one stitch-forming location, at which a sliver (FB) or a yarn is produced from a roving yarn (VG) and the sliver (FB) or yarn is fed to the stitch-forming elements. The spinning device has separate drive devices, which can be actuated in a manner that enables the spinning device to produce a sliver (FB) or a yarn of variable thickness from roving yarn (VG) and which can be fed to the stitch-forming elements.

Abstract: A method for the discharging a DC-link capacitor includes electrically coupling. the DC-link capacitor to at least one half-bridge, wherein the half-bridge comprises at least two switches and that are connected in series. The method includes at least one step in which the switches and of the half-bridge are controlled in order to carry out a simultaneous closing of the switches and.

Abstract: A loading arrangement for a spin-knit machine includes a loading device that is movable at least with one part along at least one preset or presettable path and that is configured for loading the spin-knit machine with full roving bobbins.

Abstract: A machine for the production of knitted goods includes a plurality of stitch-forming elements, at least one stitch-forming location, an associated spinning device at the at least one stitch-forming location, at which a sliver (FB) or a yarn is produced from a roving yarn (VG) and the sliver (FB) or yarn is fed to the stitch-forming elements. The spinning device has separate drive devices, which can be actuated in a manner that enables the spinning device to produce a sliver (FB) or a yarn of variable thickness from roving yarn (VG) and which can be fed to the stitch-forming elements.

Abstract: Drawing equipment for a knitting machine for the production of a fiber material from a roving includes double belts, guided via a pair of belt rollers and a pair of output pressure rollers. The pair of belt rollers and the pair of output pressure rollers respectively have an upper roller and a lower roller, which is driven by an electric motor. All of the drawing equipment rollers are disposed on the front-side of a base plate. Axles of the rollers are guided through the base plate. Drive means for the lower rollers of any roller pair are disposed at least partially on the rear-side of the base plate. Disposed on the upper roller of the pair of output pressure rollers and on the upper roller of the pair of belt rollers is suction equipment which extends over both of the upper rollers.

Abstract: A drafting arrangement for a knitting machine for the production of a fiber structure includes a roving with double aprons guided over apron rollers and an output roller pair. The apron rollers and the output roller pair respectively have a press roller and an electric motor-driven drive roller and the rollers and the electric motors are arranged on the front side of a base plate. Motor shafts are passed through the base plate and are connected by means of drive devices to the shaft members of the drive rollers. A clamping device is provided on the rear side (18) of the base plate (11) to press apron rollers and the output roller pair against the drive rollers.