Abstract: An electrical circuit arrangement includes an inverter, a driver circuit and a protective circuit. The inverter includes a plurality of inverter switching elements each having a drive connection. The drive connection of at least one inverter switching element is connected to the driver circuit via a first switching element of the protective circuit (6). A drive connection of the first switching element is connected to a circuit node, which is connected to a first potential via a resistor and to a second potential via a second switching element.

Abstract: The present invention relates to a hydrostatic clutch actuator for a clutch, in particular a wet clutch, of a motor vehicle, wherein the clutch actuator has a drive unit, a master cylinder-piston-cylinder unit driven thereby, a hydraulic reservoir fluidically connected to the master cylinder-piston-cylinder unit, and a hydraulic system for actuating the clutch, wherein, by use of the master cylinder-piston-cylinder unit, hydraulic medium can be conveyed out of the hydraulic reservoir into the hydraulic system and the hydraulic system can be pressurized, and the hydraulic reservoir has an overflow, via which hydraulic medium can be discharged from the hydraulic reservoir and the hydraulic system.

Abstract: The present invention relates to a hydrostatic clutch actuator (1) for a clutch, in particular a wet clutch, of a motor vehicle, wherein the clutch actuator (1) has a drive unit (2, 3), a master cylinder-piston-cylinder unit (4, 5) driven thereby, a hydraulic reservoir (6) fluidically connected to the master cylinder-piston-cylinder unit, and a hydraulic system for actuating the clutch, wherein, by use of the master cylinder-piston-cylinder unit (4, 5), hydraulic medium can be conveyed out of the hydraulic reservoir (6) into the hydraulic system and the hydraulic system can be pressurized, and the hydraulic reservoir (6) has an overflow (10), via which hydraulic medium can be discharged from the hydraulic reservoir (6) and the hydraulic system.

Abstract: The present invention relates to a process for linking two molecules by means of a Diels Alder reaction with inverse electron requirement (DARinv), comprising the following steps: reaction of a (a) triazine or tetrazine with one or more electron-attracting substituents on the ring as a diene component, the electron-attracting substituents being selected from: COOR C(O)NR2 CX3 (X=halogen) halogen CN SO2—R or SO3—R PR2 wherein R?H, alkyl, aryl, heterocycle, which in turn may be substituted, where appropriate, with alkyl, OH, SH, halogen, aryl, heterocycle, nitro, carboxyamido or amine group.

Abstract: The present invention relates to a process for linking two molecules by means of a Diels Alder reaction with inverse electron requirement (DARinv), comprising the following steps: reaction of a (a) triazine or tetrazine with one or more electron-attracting substituents on the ring as a diene component, the electron-attracting substituents being selected from: COOR C(O)NR2 CX3 (X=halogen) halogen CN SO2—R or SO3—R PR2 wherein R?H, alkyl, aryl, heterocycle, which in turn may be substituted, where appropriate, with alkyl, OH, SH, halogen, aryl, heterocycle, nitro, carboxyamido or amine group.

Abstract: The invention relates to a device for producing different hole patterns in sheet-shaped print materials. An apparatus and process for producing different hole patterns in a sheet-shaped print material is provided wherein a punch in a tool roller is raised and lowered relative to an outer surface of the tool roller in order to effectuate and ineffectuate, respectively, punching by the punch. According to a preferred embodiment, a die roller is provided having a die corresponding with the punch, and sheets are fed through the tool roller and the die roller. In one embodiment punches and dies are provided, and the punches are selectively raised and lowered in order to achieve a desired hole pattern in the sheet.

Abstract: The invention relates to a device and method for processing of sheet-shaped materials comprising a first module having a first sheet-processing mode, a second module having a second sheet-processing mode, the first module being interchangeable with the second module within a common space. The sheet-processing modes include, without limitation, punching, cutting, embossing, creasing, folding and perforating, without limitation, alone or in combination. The first and second modules may be interchanged manually or automatically.

Abstract: The invention relates to a device for producing different hole patterns in sheet-shaped print materials. An apparatus and process for producing different hole patterns in a sheet-shaped print material is provided wherein a punch in a tool roller is raised and lowered relative to an outer surface of the tool roller in order to effectuate and ineffectuate, respectively, punching by the punch. According to a preferred embodiment, a die roller is provided having a die corresponding with the punch, and sheets are fed through the tool roller and the die roller. In one embodiment punches and dies are provided, and the punches are selectively raised and lowered in order to achieve a desired hole pattern in the sheet.

Abstract: The profiled surface is used as an abradable (1) in flow machines such as gas turbines where blade tips (2) move over the profiled abradable in a predetermined direction (v) to produce a partial abraded surface which is formed by material removal or ablation. The surface is formed by ribs (15) which surround chamber-like depressions (11) and extend in rib directions. The abradable (1) forms a pattern of strip-like elements (5) which lie in the directions of the ribs on connection lines (45) between corner points (41, 42; 43, 44) of a reference grid (40). Over at least more than 80-90% of the abraded surface the rib direction differs from the direction of movement (v) of the blade tips (2). For at least two-thirds of the abraded surface the direction of movement deviates from the rib direction by more than 30°, preferably more than 45°. The strip-like elements (5) of the abraded surface can be curved as well as discrete and/or partly connected strips.

Abstract: The profiled surface is used as an abradable (1) in flow machines. In these machines blade tips (2) move over the profiled abradable in a predetermined direction (v). In so doing they produce a partial surface, an abraded surface (10), which is formed by material ablation. The profiling of the surface is formed by ribs (15) which surround chamber-like depressions (11). A rib direction can in each case be associated with the ribs. The abradable (1) forms a pattern which is built up of strip-like elements (5) and the elements of which lie in the directions of the ribs on connection lines (45) between corner points (41, 42; 43, 44) of a reference grid (40). Largely at each location of the abraded surface (10)—i.e. at least at more than 80 - 95% of the abraded surface—the rib direction differs from the direction of movement (v) of the blade tips (2).

Abstract: The cylinders of the compressor each have a guide piston connected with a work piston with each being reciprocally mounted within a guide cylinder and work cylinder. In addition, seals are provided between the guide piston and the guide cylinder within a half-portion of the guide piston proximate to the work piston while a scraper ring is provided in a second half-portion of the guide piston remote from the work piston in order to meter lubricant between the guide piston and guide cylinder. Excess lubricant which is splashed from the crank case into the guide cylinder is returned via the scraper ring to the crank case.

Abstract: The apparatus for removing oil from a compressed gas flow includes a separator in which the oil is removed and initially collected as well as a vessel for receiving the collected oil from time-to-time. The vessel is disposed below the separator and communicates therewith by way of connecting lines employing shutoff valves. The vessel serves to collect the oil over time and permits a discharge of oil therefrom while completely separated from the separator.

Abstract: A process for the removal of films of flow agent from moving strip material, by squeezing away the film by means of squeeze rollers and an air flow duct which each extend transversely with respect to the forward feed direction of the strip material. The air flow is directed along the squeezed-away cushion of flow agent, and entrains the cushion of flow agent. Apparatus which is used in the process includes air flow ducts which extend transversely with respect to the forward feed direction of the strip material, and which are positioned at the point of entry of the strip material into the squeeze region.