Abstract: In view of the miniaturization of semiconductor components, the prevention of particles and other defects on the wafer surface during production is of great importance. The inspection should proceed as process-oriented as possible. For this purpose, devices are needed which on the one hand, are of very compact construction, while on the other hand, they still are equipped with measuring systems meeting the highest requirements.

Abstract: A dosing device is provided and comprises a withdrawal container and a dosing means comprising at least one dosing unit which is a piston-cylinder unit designed as a disposable member. The piston-cylinder unit discharges into a receiving container and valve means is provided to control flow into and out of the piston-cylinder unit.

Abstract: A pipette for the handling of a syringe. The pipette has jaw chucks which are adjustably arranged with respect to the plunger receptacle, being pivotably mounted on a plunger-gripping device. The syringe is insertable with opened jaw chucks with the plunger head only partially contacting the jaw chucks. The jaw chucks are laterally engageable on the plunger head upon insertion of the syringe. The engaging movement of the jaw chucks on the plunger head is regulated according to the invention so that the engaging movement has a substantially tangential component with respect to the surface of the plunger head. As a result, a desired and form-locking connection to the plunger head of the syringe results that requires a small amount of force.

Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.

Abstract: A tensioner for a power transmission element of a traction drive, includes a housing, a swivel arm having a free end for connection to a rotatable tension roller which rests on the power transmission element, and a swivel bearing, including an axle for connection to the swivel arm and a bushing forming part of the housing and supporting the axle, for rotatably supporting the swivel arm in the housing. A spring is positioned in a peripheral zone of the swivel bearing between the swivel arm and the housing. Mounted in fixed rotative engagement to the axle and supported by the housing via a friction lining is a friction disk, with a disk-shaped first dampening element positioned between the friction lining and the housing.

Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.

Abstract: A pipette for the handling of a syringe. The pipette has jaw chucks which are adjustably arranged with respect to the plunger receptacle, being pivotably mounted on a plunger-gripping device. The syringe is insertable with opened jaw chucks with the plunger head only partially contacting the jaw chucks. The jaw chucks are laterally engageable on the plunger head upon insertion of the syringe. The engaging movement of the jaw chucks on the plunger head is regulated according to the invention so that the engaging movement has a substantially tangential component with respect to the surface of the plunger head. As a result, a desired and form-locking connection to the plunger head of the syringe results that requires a small amount of force.

Abstract: A syringe made of plastic serves as a metering part for a bottle-top dispenser. It includes a piston-cylinder unit, which has a cylinder sleeve with an installation opening for the piston, and a retainer ring for the piston which lies in front of the installation opening and which is clipped onto the cylinder sleeve in such a way that the piston cannot be pulled out of the cylinder.

Abstract: The bottle top dispenser has a valve housing and a piston-cylinder unit, which can be releasably affixed to the housing, the piston and cylinder of which can be activated in an axial stroke movement relative to one another, in order to draw liquid from a bottle on which the dispenser is set, and eject it. The intake process takes place in a spring-activated extension movement, and the ejection process takes place in a manually activated compression movement of the piston-cylinder unit. The dispenser has an activation unit, where a releasable activation connection can be produced between the former and the piston-cylinder unit. The activation unit is provided with the spring element for the intake process, and preferably designed for the manual action for ejection.

Abstract: A device for actuating the control valve (14) of a hydraulic power steering system for automotive vehicles, the rotary motion of a steering wheel being transmitted by means of a steering shaft (2) and the steering torque being transmitted by a relative rotation between the steering shaft (2) and a pinion shaft (4), and wherein the control valve (14) is a linear slide valve. A sleeve (6) embracing the steering shaft (2)and the pinion shaft (4) converts the relative rotation between the two shafts into an axial displacement axially and helically extending coulisse-type guides (7, 8), angularly disposed to one another, within which pins (9, 10), rigidly coupled to the steering shaft (2) and the pinion shaft (4), are received.

Abstract: A linear induction motor, particularly for levitation-type vehicles (e.g., magnetic-suspension vehicles), has a stator juxtaposed with a reaction rail and formed with a plurality of longitudinally spaced windings or coils interdigitated with damping bars forming a damping cage with a pair of longitudinal conductors flanking the stator core. The latter is constituted by a lamination stack and is formed, in the region facing the reaction rail, with a plurality of slots in which portions of the coils are received. The slots increase in depth outwardly and the coils have portions which progressively recede from the reaction rail outwardly.