Abstract: An articulation head for a clutch-release rocker arm of a friction clutch of a motor vehicle is sealed with respect to dust and abraded material by means of an elastic sleeve. The sleeve is clamped between flanges of a ball shaft and a bearing shell. Consequently, the articulation head is particularly unsusceptible to wear and can be moved virtually without noise.

Abstract: A thrust plate assembly for a motor vehicle friction clutch includes a wear adjustment device arranged between the diaphragm spring and a component such as the housing or the pressure plate, and has at least one adjustment element which is displaceable and is pretensioned. At least one play sensor arrangement for detecting wear of the friction linings is clamped between the pressure plate and the flywheel. The play sensor arrangement includes a locking/detection element which is arranged on one component such as the housing or the pressure plate and which is pretensioned against the wear adjustment device with a locking portion and acts upon this wear adjustment device to prevent a movement of the at least one wear adjustment element and which interacts with another component for detection of wear. The latter component is displaceable with respect to the first component when wear occurs.

Abstract: A stator for a hydrodynamic torque converter which is produced by injection molding with axially drawn dies. The stator hub has stator blades produced by use of a thermoplastic material to fill the dies in the injection molding process. The stator blades are positioned relative to one another on the stator hub in such a way that the flow outlet of every stator blade is arranged at an offset of only the width of a gap relative to the flow inlet of the subsequent stator blade in the circumferential direction.

Abstract: A torsional vibration damper for arrangement in a drive train of an automobile comprises three flywheel mass arrangements arranged so as to be rotatable both jointly and relative to one another about a common first axis of rotation. At least two of the three flywheel mass arrangements are torsionally elastically coupled to one another by a spring arrangement. The three flywheel mass arrangements are coupled to one another via a roller gear. The first flywheel mass arrangement has a first toothing along at least a part circumference and the third flywheel mass arrangement has a second toothing along at least a part circumference. The second flywheel mass arrangement has at least one roller carrier mounted so as to be rotatable about a second axis of rotation and a plurality of roller bodies which roll on part regions of the first toothing and on part regions of the second toothing.

Abstract: A wrap spring clutch having a first component rotatable around a rotary axis, a second component rotatable around the rotary axis, and a wrap spring arrangement, which is held in a substantially rotation-proof manner on one of the two components relative thereto and is at connective rest or can be brought into connective rest on a circumferential surface of the other of the two components to establish a rotary connection between the first and second components. The wrap spring arrangement is at connective rest with a first spring section on a circumferential surface of the first component for torque transmission and is at connective rest with a second spring section on the circumferential surface of the other component.

Abstract: A controllable vibration damper for motor vehicles, having a cylinder containing damping fluid, a piston rod entering the cylinder in a sealed manner and arranged axially displaceably therein, and a damping piston which is fastened to the piston rod and divides the cylinder into two working spaces, as well as a damping valve, which is provided with a valve seat and controls the effective cross section of a damping passage of the main stage via an axially displaceable valve body, the valve body being acted on in one direction by a precontrolling device and activated directly in the opposite direction.

Abstract: An assembly for a motor-vehicle friction clutch, in which a pressure plate and a pressure spring are preassembled in a clutch casing. The pressure plate can move in the axial direction with respect to the clutch casing and is connected to the clutch casing in a rotationally fixed manner by means of leaf springs. A releasable transport securing device prevents the pressure plate from moving in the axial direction toward the open side of the clutch casing. The securing device acts between a stop area, which limits the axial displacement of the pressure plate or is formed by said pressure plate, and a corresponding opposing stop area on the clutch casing. The transport securing device is a locking element which is held between the stop area and the opposing stop area by frictional force or a form fit, and can be disengaged by spring force when the clutch is fitted or when the clutch is first actuated.

Abstract: A pressure plate sub assembly for urging a clutch disk against a flywheel in a friction clutch with automatic wear compensation includes a housing having a radially outer area connectable to the flywheel for rotating with the flywheel about an axis of rotation a pressure plate assembly mounted in the housing for rotation about the axis rotation and axial displacement with respect to the housing, a force accumulator mounted between the housing and the pressure plate for urging the pressure plate against the clutch disk, a wear readjusting device arranged between the accumulator and the pressure plate for compensating for wear of the clutch disk, and a clearance transmitter including a ring element with a wear registering device for registering wear of the friction clutch, a retaining arrrangement for retaining the ring element on the pressure plate sub assembly, and a readjusting arrangement for cooperating with the wear readjusting device.

Abstract: A pressure holder, filled with a medium and having a gas mass that pressurizes the holder, especially for volume compensation in a vibration damper. The gas mass including a deformable enveloping body with a wall in which a pressurized gas is enclosed. The wall of the enveloping body is multi-layered, with at least one layer being a metal foil.

Abstract: A converter housing of a hydrodynamic torque converter with a driver, is formed with a converter cover which is rotatable about a center axis. The driver is arranged at a side of the cover facing a drive in an area preferably extending substantially radially. The driver is in an operative connection with a receptacle of a drive element which is associated with the drive and having a center axis aligned with that of the converter cover. The driver has a platform which is fastened to the converter cover at a predetermined radial distance to the center axis of the converter cover without consideration of the radial distance of the receptacle of the drive element from the center axis of the drive element. At a side of the driver remote from the converter cover, a driver member projects in the direction of the drive element.

Abstract: An actuating device for the automatic actuation of a transmission includes at least two actuating units whose driven parts can be driven in a translatory movement by which a transmission shaft of the transmission can be driven in rotary and translatory movement for gear selection and accelerator selection. The driven parts which can be driven in translatory movement cooperate with a lever element which is connected with the transmission shaft and which is mounted in an articulated manner by means of at least one joint.

Abstract: A torsional vibration damper with a plurality of transmission elements which are rotatable relative to one another about a common axis of rotation. The relative movement of the transmission elements carried out by the deflection of coupling elements which are displaceable between the transmission elements along at least one guide path in the circumferential direction and which are in a working connection with the two transmission elements for this purpose. The guide path which is provided on at least one of the transmission elements is provided with a curvature which serves to receive a coupling body which is provided at the other transmission element and which is preferably formed with its own curvature at least along its rolling area facing the guide path.

Abstract: A rotary vibration damping device for damping rotary vibrations in a drive train through which the output torque of an internal combustion engine is transmitted in a drive power flow direction to driving wheels ot a motor vehicle. The damping device includes a first inertial mass arrangement that is connected to a crank shaft of the internal combustion engine for the purpose of rotation around a rotational axis, a second inertial mass arrangement that is connected via a spring device to the first inertial mass arrangement for common rotation around the rotational axis and for relative rotation with respect to the first inertial mass arrangement, and at least a third inertial mass arrangement that is connected to the drive train before the spring device in the drive power flow direction for rotation around the rotational axis. The third inertial mass arrangement can be disconnected from the drive train, with respect to rotary drive, when a predetermined operating state is attained.

Abstract: The invention relates to a guide bushing between two components axially movable relative to each other, especially for guiding a piston rod subjected to longitudinal and transverse forces in the region of a piston rod seal of a hydropneumatic vibration damper. The guide bushing encompasses the piston rod, is held axially in a piston rod guide and is made of a material having good gliding characteristics. The guide bushing is arranged in the piston rod guide with a radial clearance having a gap with a changeable width when the piston rod is subjected to transverse forces created between the receptacle diameter of the piston rod guide and the outer diameter of the guide bushing.

Abstract: An actuating device for automatically actuating a manual transmission, which has an output element that can be driven in a first direction by a first drive and in a second direction by a second drive. Each drive is assigned a sensor which displays an actuating movement and detects a movement if the output element and whose signals are fed to a control device. In the case of a movement of the output element the sensors output to the control device signals assigned to this movement, the signals specifying the respective magnitude of the movement.

Abstract: A hydrodynamic torque converter with a converter circuit having at least an impeller wheel, a turbine wheel with a turbine hub, and a stator wheel, which together enclose an inner torus. A torsional vibration damper arranged within the inner torus is operably connected with a control disk that is connected with a driven shaft so as to be fixed with respect to rotation relative to it. The torque converter is further constructed with a lockup clutch by which can transmit a torque provided by a drive while bypassing the converter circuit. A controlling system for the torsional vibration damper is provided on the drive side of the turbine wheel and the control disk which has a driven-side controller for the torsional vibration damper, is arranged so as to be fixed with respect to rotation relative to the turbine hub but rotatable relative to the turbine wheel.

Abstract: A hybrid vehicle drive for a motor vehicle includes an internal combustion engine and an electric machine which is selectively coupled with the internal combustion engine. The electric machine can be operated as a generator and as a motor. Regulation device which responds to a reference signal predetermined by a reference signal preset device are provided for the active damping of vibrations, especially torsional vibrations in the torque transmission path between the internal combustion engine and wheels of the motor vehicle driven by the latter. The regulation device also respond to sensing device which deliver an actual-value vibration signal containing vibration information about a rotating structural component of the motor vehicle and control the load torque exerted on the internal combustion engine by the electric machine for reducing or eliminating the vibrations of the structural component.

Abstract: An unthreaded attachment of a joint eye to the piston rod of a vibration damper or spring strut, particularly by resistance welding. The piston rod and joint eye are held by one clamp electrode each, and the axial force created during welding is absorbed by a stop. A positive-locking connection is arranged between the piston rod and the clamp electrode to achieve axial fixing, so that joint eye can be attached in any installation state of the damper, even when the vibration damper is already installed.

Abstract: An adjustable damping valve in a damping valve housing for a vibration damper includes a valve unit with an inlet opening in the region of a valve seat face. A valve disk is supported on the valve seat face. The valve disk is pretensioned on its rear side by a spring, wherein the pretensioning of the spring is adjustable for changing the damping force in that a supporting surface of the spring is displaceable. The supporting surface is in a working connection with a catch device, wherein the catch device can be locked by steps in that the spring which acts on the valve disk applies force to the locking bodies of the catch device in a catch profile for resiliently holding the supporting surface in a locked position.

Abstract: A torsional vibration damper for a lockup clutch of a hydrodynamic torque converter is provided with a drive-side damper element which is in operative connection with energy accumulators of a damping device and is provided with a driven-side damper element serving to support the energy accumulators in the circumferential direction. The individual energy accumulators are connected with one another by sliding elements which are movable in the circumferential direction along a guide path. The guide path is accommodated at one of the damper elements and a securing device for securing against axial movements of the sliding elements is associated with the guide path. This securing device is formed at the side of the guide path which faces the sliding elements and has a positive engagement with at least one of the sliding elements.