Abstract: A hydrodynamic torque converter has a converter circuit which is formed of an impeller wheel, a turbine wheel and a stator wheel. A driver for a piston of a lockup clutch is provided at the turbine wheel. The piston is rotatable in the circumferential direction and displaceable in the axial direction. The driver has at least one projection projecting in the direction of an associated recess in the piston in order to produce a connection forming a positive engagement in the circumferential direction while allowing a relative movement of the piston in the axial direction. The projection has at least two legs which are arranged at a distance from one another and extend at a predetermined angle relative to the circumferential direction. These legs are connected with one another, at least at their free ends, by a stiffener and have transmission surfaces at their sides remote of the stiffener.

Abstract: A pump impeller for a hydrodynamic torque converter with a flange and a hub located radially inside and extending in the axial direction. The hub has a seat for a bearing and a sleeve is connected by a pressure fit to the pump impeller. The sleeve extends in the direction of the hub and forms the seat of the bearing.

Abstract: A clutch disk with two structural component groups which are arranged so as to be swivelably movable and radially movable relative to another within a defined scope by the intermediary of a guide element which is constructed as a helical spring and which is arranged concentric to the hub and whose turns--considered in the axial direction--are inclined at least in the installed state.

Abstract: A vibration damper, especially for a motor vehicle, with at least one tubular structural component part, an axially displaceable piston rod which is guided out of the tubular structural component part, a fastening element which is fixedly secured with the piston rod and which can be fastened with a wheel suspension or a body of a motor vehicle, and a protective tube which is arranged at the piston rod and encloses the tubular structural component part. The protective tube is connected with the piston rod in a positive engagement and/or in a frictional engagement in its region facing the fastening element.

Abstract: A friction clutch, especially for motor vehicles, includes a housing connectable with respect to rotation to a flywheel of an internal combustion engine. A pressure plate is arranged in the housing and is urged by a spring toward the flywheel. A clutch disk with friction facings is arranged between the pressure plate and the flywheel such that the spring presses the friction facings ot the clutch disk against the flywheel. A compensation device with at least one element which is changeable along its axial dimension compensates for the change in position of the pressure plate caused by wear of the friction facings, wherein the contact pressure force of the spring acts on the pressure plate via the compensation device. A play transmitter includes two levers, one arranged on each side of the compensation device. One of the levers penetrates the other lever. The penetrated lever includes a stop element which limits the axial movement of the penetrated lever.

Abstract: A bridge coupling on a hydrodynamic converter comprises a piston deflectable in the axial direction and connectable via at least one friction lining to the converter housing. A cavity is provided in the friction lining for the passage of hydraulic fluid from the converter's hydraulic fluid circuit. The cavity, in a transition area to the friction surface of the friction lining includes a stamped region to create an edge-free transition.

Abstract: A sliding sleeve for a disengagement mechanism for clutch actuation in motor vehicles has at least two pairs of cams with convexities of different heights from an actuation level on the sliding sleeve that is connectable to the clutch. Each of the pairs of cams selectively fits into a window of an oscillating link or clutch release fork, whereby the oscillating window and sliding sleeve have contours that fix the sliding sleeve at one position. By selecting which of the pair of cams engages the oscillating link or clutch release lever, different mounting heights of the actuation level on the sliding sleeve from the oscillating link or the clutch release fork may be realized.

Abstract: A positioning device for an output component for automatically shifting gears of a motor vehicle transmission that undergoes two types of movements comprises a plurality of drives. The movement of each drive can be transmitted via a transmission mechanism to the output component. A first drive causes the output component to undergo movement of a first type, and a second drive causes the output component to undergo movement of a second type. The first drive is connected to a sliding element. The sliding element is axially fixed, but movable in the circumferential direction relative to the output component. The second drive is rotatably fixed, but axially movable output component.

Abstract: The invention relates to a motor vehicle friction clutch with automatic wear compensation, in which a wear indicator is provided that, due to its elasticity, exerts a clamping force on the wear adjustment device without any additional spring elements.

Abstract: In a pressure plate component group for a motor vehicle friction clutch with automatic wear compensation, at least one clearance indicator arrangement is provided, which has a clearance indicator element supported on a carrier component of the pressure plate component group so as to be rotatable around an element rotational axis. The clearance indicator element has a wear readjustment area for interaction with a wear readjustment device. Further, the clearance indicator element has, on a circumferential surface, at least regionally, a thread-type surface formation, which engages, at least regionally, with a counter-surface formation on the pressure plate component group.

Abstract: The invention relates to a connection device for a liquid or gaseous medium through an outer wall of a cylinder, whereby a connection piece interacts with a bore in the outer wall of the cylinder and with a centering part that is inserted into the bore. The connection piece has a contact surface matched to the cylinder surface and also has a corresponding sealing surface. The connection has an accommodating cavity for receiving an insert, which includes a sealing surface matched to the cylinder surface, The correct installation position of the insert in the accommodating cavity is ensured by an orientation aid.

Abstract: A torsional vibration damper has a transmission element on the drive side and a transmission element on the driven side which is rotatable relative to the drive-side transmission element against the action of a damping device. The damping device serves to transmit torque between the two transmission elements and has at least one coupling body that moves along at least one guide path which is formed in one of the transmission elements. This coupling body is displaceable at least in the circumferential direction and is in a working connection with the other transmission element via a driver device so that a deflection of one of the transmission elements in the circumferential direction by a relative movement of the coupling body results in a deflection of the other transmission element. Each guide path is provided with a curvature having a curvature location at the maximum distance from the axis of rotation.

Abstract: A friction clutch with a housing, a clutch disk having friction facings, and a diaphragm spring which presses a pressure plate against the clutch disk, contacts a knife edge formed at the pressure plate when the clutch is engaged, and lifts off from this knife edge to open the clutch. The housing and the diaphragm spring are connected so as to be fixed with respect to rotation relative to one another. The housing has a plurality of recesses which are arranged so as to be distributed along the circumference at the height of the knife edge. The diaphragm spring is provided on the radial outer side with a corresponding quantity of fingers, each of which engages in a recess when the clutch is open.

Abstract: A shifter for the actuation of bicycle transmissions designed to be installed primarily on a handlebar of a bicycle. The shifter can have a stationary housing and a rotational housing that are connected together to form a single assembled unit. A traction cable having a nipple on one end can be inserted into t he first end of a passageway in the single assembled unit. The passageway is sized such that the nipple and the traction cable may both pass through the passageway. The nipple end and traction cable can be pushed through the passageway until the nipple end comes out of the other end of the passageway. The nipple can then be fastened to the rotational housing without having to dismantle the single assembled unit.

Abstract: A friction clutch with a diaphragm spring which is fixed by a plurality of screws or rivets introduced at the housing. Each of these screws or rivets is surrounded by a spacer sleeve which is clamped between the housing and a circumferentially extending ring. Centering shoulders are provided in the ring for fixing the spacer sleeves, especially during operation.

Abstract: A friction clutch with a flywheel and a clutch housing has the flywheel and clutch housing connected to one another by means of a preferably cylindrical wall located in the radially outer portion of the clutch housing. The cylindrical wall can extend in a ring-shaped manner around the axis of rotation of the flywheel. The clutch housing encloses a clutch plate with friction linings in the radially outer area, and an application plate or pressure plate can be pressed toward the clutch plate by means of an application spring. The friction linings can be guided or extended radially outwardly up to directly next to the cylindrical wall, to make possible, with a specified friction surface, a minimum ratio of outside diameter to inside diameter on the friction linings. The friction linings can be connected to the clutch disc without the interposition of a lining spring system.

Abstract: An operating device of a friction clutch arranged in the drive train of a motor vehicle, having a positioning servo arrangement with a pressure medium power cylinder arrangement located inside the housing bell and acting on a clutch release bearing arrangement. The invention that the pressure medium power cylinder arrangement, an input element arrangement associated with a control valve and, in some cases, additional anti-tilting moment devices are embodied and/or adjusted to each other and, in some cases, to the clutch so that the force resulting from the forces exercised by the pressure medium power cylinder arrangement, the input element arrangement and, in some cases, the additional anti-tilting moment devices directly or indirectly on the clutch release bearing arrangement or the clutch release bearing arrangement side of the pressure medium power cylinder arrangement, during at least one clutch operation phase, are at least substantially coaxial to the clutch axis.

Abstract: An apparatus for testing the damping force of vibration dampers includes a frame, a drive and a clamping device for receiving the vibration dampers. One part of the clamping device is fixed in place and the other part is axially movable. The axially movable part of the clamping device is connected to the drive with a force transducer and a drive element. The drive is controlled by a control system.

Abstract: Hydraulic actuating drive for a clutch, including a control unit, a hydraulic pump which can be driven by a drive and which feeds a pressure accumulator, and an actuating cylinder which is connected via a control valve with the pressure accumulator. The drive of the hydraulic pump is provided with a sensor for detecting the power consumption by the drive, and signals are sent to the control unit so that the hydraulic pump is controllable depending on the power consumption of the drive.

Abstract: A device for preventing torque peaks generated by an internal combustion engine in a motor vehicle from being introduced into its drive train. The device is connectable to the internal combustion engine via a friction clutch which is frictionally engaged on a flywheel mass. The friction clutch is arranged in a clutch housing which is fixedly connected with the flywheel mass so that said clutch housing rotates with said flywheel mass. A pressing plate is urged into frictional engagement with the friction clutch by a first spring element. The pressing plate is also frictionally engaged with the housing via a second spring element.