Abstract: A switchable ratchet freewheel, under load, for multiple-gear hubs on bicycles includes a bolted pawl, a drive, a switch bush, as well as a switch ring. The switch ring, which has a positive-fit connection to the pawl, can either be lifted by a bulge on the switch bush, which acts in concert with an incline on a switch nose, provided that a small or no turning moment is conveyed, or by recesses with end faces and timing edges, which act in concert with a run-up incline on the recesses, whereby the recess enters into a short positive-fit connection with the segment of the switch nose that faces radially inward, provided that higher turning moments are present. In case the pawl is not lifted immediately, by means of the bulge acting in concert with the incline, this results in the positive fit of the recess with the switch nose, which reliably disengages the pawl bond when the run-up incline acts in concert with the timing edge.

Abstract: Vibration damper, in particular a shock absorbing strut, with an essentially U-shaped decompression stop boundary bracket, which bracket is fastened to a container tube, and in the event of a rebound of a vehicle axle comes into contact with a chassis-side support surface. The bracket includes a base plate with side walls, and the entire decompression stop boundary bracket is formed from a single bent component. The base plate is realized in a seamless manner and has a cutout which is adapted to the diameter of the container tube and acts as a positioning stop for the entire decompression stop boundary bracket.

Abstract: A friction clutch with a mechanism to automatically adjust for the wear of the friction linings by an adjustable-width device. The adjustable-width device includes at least one adjustment element. The adjustment element is centered with respect to the axis of rotation opposite the pressure plate by several guide pins distributed about the circumference of the pressure plate. The guide pins extend axially and support the width of the adjustable element.

Abstract: A friction clutch for arrangement in the power train of a motor vehicle. The friction clutch includes a flywheel mass arrangement to be fastened to an input shaft rotating about an axis of rotation. A pressure plate unit with a clutch housing is held at the flywheel mass arrangement. A contact-pressure plate is guided so as to be axially displaceable relative to the clutch housing and the flywheel mass arrangement. A clutch spring arrangement axially spring loads the contact-pressure plate toward the flywheel mass arrangement. A clutch disk with friction facings projects between, on the one side, friction surfaces of the flywheel mass arrangement which are located axially opposite one another and, on the other side, the contact-pressure plate. The flywheel mass arrangement and the contact-pressure plate are coupled with one another in a torsionally elastic manner with reference to the axis of rotation in order to limit the peak torque transmitted through the friction clutch.

Abstract: A clutch plate in which the support of the hub provides for pivoting as well as radial compliance relative to the remaining components. This support is accomplished by a component, which is centered directly or indirectly on the hub plate of the load compliance, whereby the load springs can be employed for radial compliance of the hub.

Abstract: A flywheel device has at least two inertial masses which can rotate relative to one another against the action of elastic elements of a damping device, one of which inertial masses, namely the output-side inertial mass which is farther from a drive system, such as for example the crankshaft of an internal combustion engine, is guided both radially and axially by way of a bearing arrangement with respect to the input-side inertial mass. The bearing arrangement has at least one axial plain bearing and one radial plain bearing. Both plain bearings guide the output-side inertial mass with respect to the input-side inertial mass with a clearance, the size of which is determined so that when a wobbling motion is introduced from the crankshaft to the input-side inertial mass, the output-side inertial mass, under the effect of centrifugal forces, can perform a self-stabilization.

Abstract: A controlling mechanism, particularly for operating a gear-shift-lever shaft of a gearbox for motor vehicles, having controlling units for introducing a sensor-monitorable rotational or translational movement to the gear-shift-lever shaft. A first controlling unit is connected to a second controlling unit and the first controlling unit can in turn be brought into active connection with the gear-shift-lever shaft via at least one articulation.

Abstract: A friction clutch, wherein the pressure force is obtained from the interaction of two different types of spring. A plate spring, which is unable by itself to apply the pressure force for transmitting the torque, is used, and at least one additional spring, which produces a force effect in the same direction and the force of which is added to the force of the diaphragm spring, is also used.

Abstract: A shock absorber for a motor vehicle has a single-tube construction with an adjustable damping force. The shock absorber includes a cylinder tube and a piston rod guide inside which a piston rod with a piston is located so that the piston can move axially. The piston divides the cylinder tube into two work chambers. A container tube encloses the cylinder tube, at least in segments. Between the cylinder tube and the container tube at least one hydraulic connection, extending from one of the work chambers via an overflow orifice to a damping force adjustment valve located outside the container tube, is formed. A cylinder tube guide centers the cylinder tube with respect to the container tube. The damping force adjustment valve has two connection openings, one of which openings is separated from the other by a wall. The damping force adjustment valve is connected to the hydraulic connection, so that the container tube extends over the entire length of the hydraulic connection to the piston rod guide.

Abstract: A detachable plug-type connector, in particular for the connection of a pressure line to a hydraulic cylinder with a pin-shaped inner part, which pin-shaped inner part can be inserted in a boring of an outer part. Between the outer part and the inner part there is a seal. The seal sits in the boring of the outer part, and in front of the seal there is a securing element which limits the axial travel of the seal in the extraction direction.

Abstract: Self-pumping hydropneumatic shock absorbing strut with internal level regulation, in particular for motor vehicles, with a work cylinder which is filled with oil, is under the pressure of at least one gas cushion which is located in at least one high pressure chamber and acts as a spring. The work cylinder is divided by a piston carried on a hollow piston rod into two work chambers, with a piston pump which is driven by the spring movements and transports oil from a low pressure chamber into the work chamber which is connected to the high pressure chamber. The pump cylinder of the piston pump is formed by the hollow piston rod. There are valves between the work chamber and the high pressure chamber for the decompression and compression damping, whereby as a valve, there is at least one valve plate, which interacts with a valve seat, which is located on the work cylinder.

Abstract: A multiple-disk friction clutch, especially for motor vehicles, with a hub which has an internal toothing and can be placed on a gear shaft so as to be rotationally fixed relative thereto. At least two clutch disks are connected with the hub so as to be rotationally fixed relative thereto and project radially beyond the hub. A stop which guides the hub axially relative to the clutch disks is provided between the clutch disks. The hub is formed of two parts and includes a hub body having an outer toothing and a hub ring which has the same outer toothing and sits on a radial shoulder of the hub body. The outer toothing of the hub ring is offset by one tooth relative to the toothing of the hub body to form the stop for the clutch disks. The hub body and the hub ring are connected with one another so as to be rotationally fixed relative to one another.

Abstract: A friction clutch for a transmission of a motor vehicle has a clutch disc with corresponding friction linings, wherein the friction linings are configured such that a ratio of the outside diameter thereof to an inside diameter thereof is less than about 1.41 and preferably falls in the range of about 1.25 to about 1.38. Also contemplated is a method of using such a friction clutch.

Abstract: A piston cylinder assembly which includes a work cylinder, a piston and a piston rod, which piston rod carries the piston and extends out of the work cylinder in a sealed manner, as well as a ring-shaped equalization chamber formed by two tubes is disclosed. The equalization chamber is divided by a separating piston into two partial chambers, the separating piston having two parts which are guided so that they can move in a sealed manner axially on the wall of the respective tube of the compensation chamber facing the respective part. The two parts of the separating piston are connected by a flexible portion allowing them to move radially with respect to one another and are sealed with respect to one another.

Abstract: A vibration damper for a motor vehicle is taught, which vibration damper has a cylinder tube in which a piston rod which is centered by a piston rod guide can move axially. A container tube encloses the cylinder tube, and the container tube is made of a material which has a significantly higher coefficient of thermal expansion than the material of the cylinder tube. Aluminum is an example if the container tube material. A compensation device compensates for the length difference between the cylinder tube and the container tube at temperatures below and above the temperature at which the vibration damper is manufactured. The container tube is characterized by the fact that preferably at least two expansion beads are formed in the wall of the container tube. The expansion beads compensate for thermal changes in length of the container tube and hold the cylinder tube under a bias with respect to the container tube over the entire range of operating temperatures.

Abstract: To be able to verify the function of the actuator system of an automatic clutch or of an automatic transmission of a motor vehicle as a function of the current conditions, including while the motor vehicle is in motion is necessary, the invention teaches that a test circuit actuates the actuator system, starting from a first specified operating position of the clutch or of the transmission to a second specified operating position of the clutch or of the transmission, into an actuator test position in which the clutch or the transmission is still essentially in its first operating position. The test circuit, in the actuator test position, tests the functional capability as a function of data stored in a data memory, which stored data are compared to data measured in the actuator test position of a changing operating parameter.

Abstract: A friction clutch, in particular for motor vehicles, with a clutch housing which can be detachably connected to a centrifugal mass of an internal combustion engine, and a clutch disc, pressure plate and clutch mainspring located inside the clutch housing whereby the centrifugal mass and the clutch housing come into contact in the axial direction. A spring supplies the retaining force between the centrifugal mass and the clutch housing. The spring which applies the retaining force is advantageously a plate spring. As a result of this configuration, the clutch housing can easily be assembled to the centrifugal mass by snapping it on.

Abstract: A torsional vibration damper has at least one inertia mass, which is connected in a rotation-proof manner to a drive and acts upon an absorption mass. The absorption mass is rotatable relative to the inertia mass and is connected thereto via connecting elements. Associated with the absorption mass is a balancing weight, which is connected via a movement-transmitting transmission to the absorption mass, on the one hand, and to the inertia mass, on the other hand.

Abstract: A friction clutch which has a release bearing and a release element with a snap connection, whereby a bias spring device is provided which is pre-installed in a separate groove in the encircling bearing ring.

Abstract: An inertial mass device is realized with at least two inertial masses which can rotate relative to one another, one of which is connected to a hub disc which is effectively connected to elastic elements of a damping device and preferably with its radially inner area forms a hub for the location of a bearing arrangement. Corresponding to the hub disc there is at least one planet wheel of a planetary gear train which acts between the inertial masses. The hub disc, on its side facing away from the planet wheel, on a specified radius around its axis of rotation, has indentations formed in the peripheral direction at specified intervals, each of which indentations forms a projection toward the planet wheel on the opposite side of the hub disc, whereby the projections form a toothing on the hub disc, by means of which the hub disc is engaged with the toothing of the planet wheel for the transmission of a torque between the inertial masses.