Abstract: Previously, only webs between connectors in reactor pressure vessel lids have been examined for incipient cracks by using an ultrasonic scanning head. In order to be able to test the connector penetrated by a bush from an annular gap formed between the connector and the bush, a frame is provided which carries a housing through lockable floating bearings for receiving a rotary plate in the housing. The rotary plate is concentrically associated with a centering piece which is adjustable in the vertical direction and is eccentrically associated with a lifting cylinder which is likewise vertically adjustable. A free end of the lifting cylinder carries a probe drive for inserting a probe into the annular gap. The annular gap is scanned by the probe due to an oscillating movement of the rotary plate.

Abstract: Previously when testing a connector penetration of a reactor pressure vessel lid, one assumed that an annular gap between the connector and the sleeve was concentric. However, tests have shown that in some lid structures a deflection of the connector took place after cooling to room temperature, which led to an eccentric configuration of the sleeve and the connector. In order to be able to completely test such annular gaps, a method and device for nondestructive testing of a penetration of a reactor pressure vessel lid according to the invention includes displacing the sleeve with the help of a thrust piece, until an accessible annular gap is reached. A sensor then arrives at the annular gap through a recess in the thrust piece.

Abstract: Heretofore, dimples or recesses that were distributed over the periphery of a cylindrical wall of a counterbore in a component had to be formed or inserted one after the other, which required complicated positioning work. According to the invention, in order to simultaneously form all of the dimples with a simple positioning device, a deflection body is provided through which at least two milling spindles pass in a planet-like disposition relative to a central control rod. The deflection body is connected to a centering piece facing the counterbore and to an intermediate piece facing away from the counterbore. The intermediate piece in turn forms a type of cylinder/piston connection with a gear housing. Each milling spindle is connected to an output shaft of a gear housing by a flexible shaft that is axially movably guided in between.

Abstract: Apparatus for positioning a mast for the inspection and/or repair of a core shroud of a water-cooled nuclear reactor, heretofore have had television cameras directed at centering pins and bores from the side. Due to the inclined direction of surveillance, the alignment produced therewith has been inaccurate. In order to achieve a precise positioning, according to the invention a marking element which is provided between the television camera and the support plate has markings which can be brought into alignment with a marking made on the support plate. The centering pins and the bores are disposed concentrically to one another once they have been brought into alignment.

Abstract: A planetary transfer transmission for the drive of two vehicle axles of a motor vehicle, whereby a central input shaft, a coaxial central output shaft, and a concentric output shaft, in a torsionally fixed way, are respectively connected with one gear element of a planetary wheel gear that can be locked by a locking multi-disk clutch. An input wheel of an axle offset gear, that can be driven by the concentric output shaft, the planetary wheel transmission, and the locking multi-disk clutch are arranged in line to one another.The input wheel is disposed on the side of the locking multi-disk clutch that is opposed to the planetary wheel gear and, in a torsionally fixed way, is held on an outer hollow shaft that is rotatably disposed on the concentric output shaft and can be brought into driving connection with the concentric output shaft by an axle-connecting multi-disk clutch that is arranged on the side of the input wheel that is opposed to the locking multi-disk clutch.

Abstract: A clamping element for fixation in a bore of a structural element and for carrying a load includes a clamping sleeve formed of a plurality of partial shells and having a central axis, a clamping bolt vertically movable in the clamping sleeve, the partial shells and the clamping bolt having mutually cooperating spreading surfaces converging and tapering toward the load, the clamping bolt permanently subjecting the partial shells to an automatically acting clamping force, the clamping bolt being axially movable to counteract and relieve the clamping force, the partial shells and the clamping bolt having surfaces adjacent the spreading surfaces converging obliquely toward the central axis and forcing the partial shells into a disengaged position.

Abstract: A steam generator having a tube sheet, tubes ending in the tube sheet, a chamber adjoining the tube sheet having an access opening formed therein and a device disposed in the chamber for inserting a sleeve into one of the tubes in a plurality of partial insertion strokes, the inserting device includes a movable clamping device holding and moving the sleeve in axial direction of the tube in one of the partial insertion strokes, and a stationary clamping device associated with the movable clamping device holding the sleeve during a backstroke of the movable clamping device.

Abstract: In an epicyclic distributor gear-box for driving two vehicle axles of a motor vehicle, a main shaft concentric with one of two coaxial main shafts is connected to the sun wheel of an epicyclic gear-box. Each of the two other gear elements of the epicyclic gear-box are connected to one of the coaxial main shafts. A lock-up plate clutch connected to two of the gear elements is engaged by a spring and disengaged by an axial pressure piston. Each half-clutch has a plate carrier and one of the plate carriers has an abutment supporting all the plates. The abutment is both immovably fixed on the concentric main shaft by releasable fasteners and is provided with axial passage for a clutch disengagement assembly. The spring maintains the engaged end position and is located on the sun wheel side of the plate carrier having the abutment and the axial pressure piston is located on the other side.

Abstract: A crash protection apparatus for a pulling device having a hollow piston cylinder and a pulling claw for pulling a tube out of a tube sheet of a heat exchanger chamber in which the pulling device is disposed, the crash protection apparatus includes another cylinder without a piston rod having an axis substantially parallel to the axis of the hollow-piston cylinder and being fixed relative to the tube sheet in the chamber, a piston of the other cylinder, a bracket extending from the piston substantially at a right angle to the axis of the other cylinder for supporting the pulling device with a supporting force provided by the other cylinder, and a device for controlling the supporting force for compensating only the weight of the pulling device in each position of the pulling device.

Abstract: A chute filling device for handling cigarette filter tubes has a funnel and a chute divided by partitions, as well as a discharge opening and a pushing arm, wherein the partitions are loosely suspended with play in slots in a swing frame, the partitions being capable of being set to oscillating in such manner that the cigarette filter tubes are braked as they fall by frequent contact with the chute walls and move downwardly while maintaining their horizontal attitude.