Abstract: A torsional vibration damper or torsional tuned mass damper having a rotating system having a primary mass, which is arranged, or preferably fixable for conjoint rotation on a rotatable shaft, such as a crankshaft of a motor, for example, in particular an internal combustion engine, and having a secondary mass, which is movable relative to the primary mass. An assembly for vibration dampening and/or tuned vibration dampening of the relative motion between the primary mass and the secondary mass is formed in part outside of the rotating system of the torsional vibration damper or torsional tuned mass damper.

Abstract: A torsional vibration damper has a hub part primary mass mountable on a motor drive shaft, and an interia ring secondary mass which at least partially encloses the hub part in the radially outer region. A gap between the hub part and the inertia ring is filled with fluid. A seal device between the hub part and the flywheel ring prevents escape of the fluid. The seal device has a first ring connected tightly to the hub part, a second ring connected tightly to the inertia ring, and an elastomer ring connected on one side sealingly to the first ring and on the other side to the second ring.

Abstract: A viscosity-torsional vibration damper or absorber for a crankshaft of a combustion engine includes an annular damping or absorbing arrangement which can be fastened to the crankshaft. The damping or absorbing arrangement is fastened in an outer diameter region to a holding device which, on the other hand, can be fastened to the crankshaft and can be sprung in the axial direction of the crankshaft, but is inherently rigid radially with respect to the crankshaft.

Abstract: A viscous torsional vibration damper includes: a) an annular damper housing, which bounds a damper chamber; b) an inertia ring arranged in the damper chamber; c) a bearing device, which supports the inertia ring in the damper housing and which has at least one bearing element with an axial bearing region and/or a radial bearing region, d) a shear gap between the inertia ring and the damper housing, which shear gap is filled with a viscous fluid, e) wherein a plurality of the axial bearing segments and/or a plurality of the radial bearing segments is circumferentially distributed on the at least one bearing element.

Abstract: An actuator arrangement for applying a torque to a shaft of a machine, in particular a reciprocating piston engine, includes: a) at least one actuator device for applying the torque; and b) at least one rotatable seismic mass coupled to the shaft. The at least one actuator device is designed to apply the torque to the shaft between the seismic mass and the shaft. A corresponding method is provided for active damping of torsional vibrations of the shaft having the actuator arrangement.

Abstract: A viscous torsional vibration damper includes: a) an annular damper housing, which bounds a damper chamber; b) an inertia ring arranged in the damper chamber; c) a bearing device, which supports the inertia ring in the damper housing and which has at least one bearing element with an axial bearing region and/or a radial bearing region, d) a shear gap between the inertia ring and the damper housing, which shear gap is filled with a viscous fluid, e) wherein a plurality of the axial bearing segments and/or a plurality of the radial bearing segments is circumferentially distributed on the at least one bearing element.

Abstract: A flat bar elastic rail clip in which the flat bar is turned back on itself so that one portion is longer than the other. The flat bar incorporates an opening in both portions to accommodate a rail spike that is held in the rail tie. This type of spike is usually used in combination with a concrete tie and a guide plate that seats on the rail seat of the tie. The combination of a shaped flat bar clip which is capable of providing both rail clamping and rollover protection configurations in combination with a guide plate and spike.

Abstract: A torsional vibration damper has a hub part primary mass mountable on a motor drive shaft, and an interia ring secondary mass which at least partially encloses the hub part in the radially outer region. A gap between the hub part and the inertia ring is filled with fluid. A seal device between the hub part and the flywheel ring prevents escape of the fluid. The seal device has a first ring connected tightly to the hub part, a second ring connected tightly to the inertia ring, and an elastomer ring connected on one side sealingly to the first ring and on the other side to the second ring.

Abstract: A crankshaft assembly which is designed for a reciprocating-piston machine of an internal combustion engine includes a crankshaft, a torsional vibration damper for damping resonance torsional vibrations of the elastic torsion modes of the crankshaft, and an output. The torsional vibration damper has a primary mass inertia and a secondary mass inertia, the primary mass inertia being rigidly connected to a crankshaft and the secondary mass inertia being coupled as a seismic mass with a viscous liquid to the primary mass inertia. The torsional vibration damper is configured to assume the function of a flywheel for reducing rotational non-uniformity in addition to the function of reducing the resonance torsional vibrations of the crankshaft.

Abstract: A viscous torsional vibration damper includes: a) an annular damper housing, which bounds a damper chamber; b) an inertia ring arranged in the damper chamber; c) a bearing device, which supports the inertia ring in the damper housing and which has at least one bearing element with an axial bearing region and/or a radial bearing region, d) a shear gap between the inertia ring and the damper housing, which shear gap is filled with a viscous fluid, e) wherein a plurality of the axial bearing segments and/or a plurality of the radial bearing segments is circumferentially distributed on the at least one bearing element.

Abstract: A flat bar elastic rail clip in which the flat bar is turned back on itself so that one portion is longer than the other. The flat bar incorporates an opening in both portions to accommodate a rail spike that is held in the rail tie. This type of spike is usually used in combination with a concrete tie and a guide plate that seats on the rail seat of the tie. The combination of a shaped flat bar clip which is capable of providing both rail clamping and rollover protection configurations in combination with a guide plate and spike.

Abstract: An actuator arrangement for applying a torque to a shaft of a machine, in particular a reciprocating piston engine, includes: a) at least one actuator device for applying the torque; and b) at least one rotatable seismic mass coupled to the shaft. The at least one actuator device is designed to apply the torque to the shaft between the seismic mass and the shaft. A corresponding method is provided for active damping of torsional vibrations of the shaft having the actuator arrangement.

Abstract: Control device (100) controlling a drilling operation and methods by which the dynamics of the continuum in question can be divided into superimposed waves, of which the wave traveling in the direction of the actuator and/or drive (10) is compensated by the actuator. This prevents reflection of the energy on the actuator. By using two sensors (30, 40) the wave traveling towards the actuator (10) and the wave traveling away from the actuator (10) can be calculated separately from one another, so that both the parameters of the wave traveling toward the actuator and the parameters of the wave traveling away from the actuator can be determined in order to be able to perform a control of the driving device of the drill string (20) on this basis.

Abstract: The invention relates to a guide plate for a system for fastening a rail to a substrate on which there is provided, laterally of the railway track, a shoulder, which absorbs the forces occurring when the rail is traveled on by a rail vehicle, the guide plate having an underside which is associated with the substrate and an upper side which is exposed in the installation position, is remote from the underside and on which it is possible to support a spring element provided for applying resiliently elastic holding-down forces to the rail to be fastened.

Abstract: Control device (100) controlling a drilling operation and methods by which the dynamics of the continuum in question can be divided into superimposed waves, of which the wave traveling in the direction of the actuator and/or drive (10) is compensated by the actuator. This prevents reflection of the energy on the actuator. By using two sensors (30, 40) the wave traveling towards the actuator (10) and the wave traveling away from the actuator (10) can be calculated separately from one another, so that both the parameters of the wave traveling toward the actuator and the parameters of the wave traveling away from the actuator can be determined in order to be able to perform a control of the driving device of the drill string (20) on this basis.

Abstract: An elastic tensioning clamp made of spring steel for rail fixation comprises a central loop (44) having two inner legs (46) connected by an arc-shaped central portion (48) as well as nooses (42) connected to the inner legs (46) of the central loop (44) and running towards the free ends (50) of the tensioning clamp (40). The nooses (42) are formed so as to have, in the unloaded state, a maximum height (H) of at least 20 mm above the upper plane (E2) of the central loop (44) in the region of the two inner legs (46).

Abstract: An elastic tensioning clamp made of spring steel for rail fixation comprises a central loop (44) having two inner legs (46) connected by an arc-shaped central portion (48) as well as nooses (42) connected to the inner legs (46) of the central loop (44) and running towards the free ends (50) of the tensioning clamp (40). The nooses (42) are formed so as to have, in the unloaded state, a maximum height (H) of at least 20 mm above the upper plane (E2) of the central loop (44) in the region of the two inner legs (46).

Abstract: A system for fastening a rail on a substrate includes a base plate, molded into which is a central portion, the width of which is adapted to the width of the rail foot of the rail to be fastened, with at least one fastening element for connecting the base plate to the substrate. The at least one tensioning element is provided for holding down the rail on the base plate. The system provides a fastening system allowing fastening of rails that satisfies modern requirements with the additional benefit of low production costs and simple assembly, while maintaining the basic configuration of the base plate provided and using simple means.

Abstract: A guide plate for securing a rail on a substrate, at which a shoulder is provided at the side of the rail path has an underside facing the substrate and an upper side, lying freely in the installation position and facing away from the underside, on which a spring element is supported. With such a component it is possible to build a rail securing arrangement with a system, in which the forces are dispersed by a shoulder present at or in the solid substrate, whereby a cut-out is formed into the underside, the dimensions of which are adapted to the shoulder such that, in the installation position, the shoulder engages freely into the cut-out, and in that a reinforcement rib is formed at a roof surface opposite an opening of the cut-out, which projects in the direction of the opening over a height which is less than the cut-out.

Abstract: The invention relates to a guide plate for a system for fastening a rail to a substrate on which there is provided, laterally of the railway track, a shoulder, which absorbs the forces occurring when the rail is traveled on by a rail vehicle, the guide plate having an underside which is associated with the substrate and an upper side which is exposed in the installation position, is remote from the underside and on which it is possible to support a spring element provided for applying resiliently elastic holding-down forces to the rail to be fastened.