Abstract: A vibration damper for the wheel suspension of a motor vehicle includes a damping tube, a working piston which splits the interior of the damping tube into two working chambers and is attached to a piston rod, a closure assembly which closes an open end of the damping tube and through which the piston rod is guided, and a rebound buffer spring which is disposed between two spring plates. The rebound buffer spring is formed as a helical spring, wherein the ends of the rebound buffer spring are supported on support surfaces of the spring plates. The spring plates comprise support sleeves extending in the longitudinal direction of the vibration damper, and the outer peripheral surfaces of the support sleeves support the rebound buffer spring from the inside in the radial direction when the rebound buffer spring has reached its hard stop. The support sleeves do not touch when the compression coil spring is at its hard stop.

Abstract: The invention relates to a method and a device for transversely rolling stepped hollow shafts or cylindrical hollow parts from a pipe. The invention achieves the object of rolling stepped hollow shafts of the most varied dimensions and also of greater lengths in a flexible manner from a pipe using a small number of simple tools. In accordance with the invention, the object is achieved by virtue of the fact that rolling tools which can be radially advanced and are disposed in a planet-like manner around the workpiece are used to roll the contour of the transition from a central diameter in one portion of the workpiece to the central diameter in the adjacent portion by means of co-ordinated control of the radial advance of the rolling tools and the axial feed of the workpiece, and a mandrel head having an outer diameter which is adapted to the smallest inner diameter of the two portions is disposed underneath the rolling tools.

Abstract: The invention concerns a shock absorber for motor vehicles having a vibration absorber tube (1), in which a working piston (3) is arranged which is fixed to a piston rod (2), a closure pack (16) which closes the vibration absorber tube (1), and guides the piston rod (2), along with an outer tube (4) which surrounds at least partly the vibration absorber tube (1), wherein the outer tube (4) is connected rigidly to the piston rod (2) outside the vibration absorber tube (1).

Abstract: A dashpot featuring amplitude-dependent shock absorption, especially intended for the wheel of a vehicle and including a hydraulically parallel cylindrical pressure-compensation chamber (8). The pressure-compensation chamber is partitioned by an axially displaceable floating piston (10). At least one face (25) of the floating piston is provided with a resilient bumper (18). The object is a dashpot with a floating piston that arrives more gently at its limit inside the pressure-compensation chamber (8). The bumper is accordingly accommodated in an axial hollow (17) that extends through the body (15) of the floating piston.

Abstract: A dashpot featuring amplitude-dependent shock absorption, especially intended for the wheel of a vehicle and including a hydraulically parallel cylindrical pressure-compensation chamber (8). The pressure-compensation chamber is partitioned by an axially displaceable floating piston (10). At least one face (25) of the floating piston is provided with a resilient bumper (18). The object is a dashpot with a floating piston that arrives more gently at its limit inside the pressure-compensation chamber (8). The bumper is accordingly accommodated in an axial hollow (17) that extends through the body (15) of the floating piston.

Abstract: The invention relates to a vibration damper having an amplitude-selective damping device, comprising a damper tube (1) which is filled with damping fluid and in which a piston rod (2) is disposed in such a manner as to be able to move in a reciprocating manner, said piston rod supporting a damping piston (5) which divides the inner space of the damper tube (1) into a piston rod-side working chamber (3) and a working chamber (4) remote from the piston rod, a space (6) to receive damping fluid, which space is disposed inside a bypass provided between the working chambers (3, 4) and hydraulically in parallel with the damping piston (5) and in which an axially moveable separating piston (7) is disposed which divides the space (6) into a piston rod-side chamber (8) and a chamber (9) remote from the piston rod, wherein the bypass comprises at least a first hydraulic connection channel (10), via which the piston rod-side working chamber (3) is connected to the piston rod-side chamber (8), and at least a second

Abstract: Screw locking arrangement for a screw connection comprising a threaded spigot, a nut, a first locking washer and at least one second locking washer, wherein the first locking washer is connected in a non-rotational manner to the nut, wherein the first locking washer has first profiling on a first surface and the second locking washer has second profiling on a second surface, and wherein the profiling of the first locking washer is engaged with that of the second locking washer in such a way that a relative rotation of the two locking washers with respect to each other can be effected in only one rotational direction which leads to an increase in the tensioning force of the screw connection, wherein between the second locking washer and the threaded spigot a positive rotational locking arrangement is provided.