Abstract: A friction clutch for a motor vehicle, which friction clutch has friction surfaces on the centrifugal mass and on the application plate, whereby the clutch disc is provided with friction lining rings which have an essentially constant material thickness over their radial extent or dimension. The matching friction surfaces extend at least in one radial direction beyond the friction surfaces, and are riveted to a carrier in this area.

Abstract: A cylinder for hydraulic systems, in particular for motor vehicles, generally includes a housing having an axial hole in which a piston is guided so that the piston can be displaced axially. One end surface of the piston can be pressurized by means of hydraulic fluid. The cylinder is provided with at least one connection designed as a plug-in connection, for the insertion of at least one pressure medium line having a radially expanded portion on its outside diameter. The plug-in connection of the cylinder is designed so that both the expense for components and for labor required to fasten the pressure medium line to the connection of the cylinder can be minimized.

Abstract: A clutch disc for a motor vehicle clutch which has an input part and an output part with relative rotational play. A friction device is located between the input part and output part. The friction device includes a friction disc located non-rotationally on the input part or on the output part, which friction disc has friction areas which have different coefficients of friction around its periphery, There also are contact areas which in the effective range of angular rotation of the clutch disc move essentially from one friction area at least partly to another friction area.

Abstract: A clutch disc for a motor vehicle clutch, the clutch disc having an idle suspension system and a load suspension system. The idle springs of the idle suspension system are located in the hub disc and are actuated by means of a control plate. The control plate includes axially bent control tabs which engage the idle springs of the idle suspension system, whereby the width of the idle springs can be approximately equal to the thickness of the hub disc.

Abstract: A flywheel device having two flywheel masses which are deflectable relative to each other. Within one of the masses a grease chamber is provided along with packings against the emergence of viscous medium. One of the packings rests against a sealing seat which is developed on a structural part of one of the flywheel masses and another one of the packings is also provided on a structural part of the flywheel mass. Under axial initial stress the two packings are brought to rest against, in each case, one side of a bearing. At least one of the structural parts of the flywheel mass which has a sealing seat is adapted to receive both the bearing and the packing and has recesses in which the holder of the packing can be inserted for axially securing the packings with respect to the structural part on the one hand and with respect to the bearing on the other hand.

Abstract: Shock absorber valve for a hydraulic telescoping strut shock absorber, in which, running through a valve body, there are passages whose respective outlet-side openings are covered by ring-shaped valve discs, whereby the valve discs and the valve body are fastened and axially braced in line. The object of the invention is to make possible fully-automated assembly with short cycle times using the dry process, whereby a valve closing force independent of tolerances is achieved by using a method which generates as few chips from cutting and machining as possible. To achieve this object, the invention teaches that the valve discs and the valve body are threaded and prestressed onto a cylindrical component, whereby a fastening element is fixed to the cylindrical component.

Abstract: Telescoping vibration damper consisting of a work cylinder, a piston which is guided on a piston rod and divides the work cylinder into two work chambers, and passages in the piston which empty on at least one end into a ring-shaped chamber, the encircling control edges of which are covered by valve plates, whereby there is at least one additional valve plate located at some axial distance from the first valve plate, which together with a support element forms an additional ring-shaped chamber, whereby the first and additional ring-shaped chambers are connected to one another by means of a flow connection.

Abstract: A shock absorber with a pneumatic spring, comprising an outer suspension tube and an inner suspension tube of a suspension unit, whereby elastic roller bellows are connected to the outer and inner suspension tubes, forming a spring chamber. The roller bellows are crimped on one end to the inner suspension tube. When the shock absorber with a pneumatic spring is fully assembled, a safety device is located on the pneumatic spring which centers the outer suspension tube in relation to the inner suspension tube, so that contact between the crimped part and the adjacent roller bellows is prevented, thereby preventing damage to the roller bellows.

Abstract: A membrane spring clutch, in particular for motor vehicles, includes a clutch housing, a pressure plate for the transmission of the application pressure to friction linings and a membrane spring. In the area between the membrane spring and the pressure plate there is located an insulating member. The insulating member minimizes heat conduction from the pressure plate to the membrane spring to minimize distortion of the membrane spring from thermal conduction of heat from the pressure plate to the membrane spring.

Abstract: A torsional vibration damper is designed with a driving-side transmission element, with at least one planet carrier which can rotate relative to the transmission element and which planet carrier is provided with at least one plane wheel which is engaged on one hand with a sun gear and on the other hand with a ring gear, and with a driven-side transmission element. One of the transmission elements has control means for a spring device. There are centrifugal masses corresponding respectively to the driving-side transmission element and to the driven-side transmission element, at least one of which centrifugal masses is connected by means of the spring device to at least one element of the planetary gearset which acts as an intermediate mass, whereby the intermediate mass can be driven in a movement which is a function of the speed and direction of rotation of the two centrifugal masses with respect to one another.

Abstract: A diaphragm-spring friction clutch in which an additional spring is arranged which exerts little or no releasing force in the engaged state and high releasing force in the disengaged state. The spring characteristic of the additional spring can be adapted via adjustable stop elements in order to achieve the desired spring characteristics even with unfavorable tolerances.

Abstract: An actuator cylinder for the engagement and release of the friction clutch of a motor vehicle is described. The actuator has a device to indicate clutch engagement position, which is located outside the cylinder. A piston is disposed within the actuator cylinder. The piston has an actuator rod which extends through a cylinder end to operate a clutch. The device to detect the engagement position of the clutch is designed to adjust to the range of movement of the piston, which range of movement changes with clutch wear. The detection device is a displacement transducer. A housing, in which the transducer is mounted, moves as the range of motion of the piston changes with clutch wear. A rod or sensor mounted on the piston both interacts with the transducer to indicate the clutch engagement position and moves the housing of the transducer.

Abstract: A drive apparatus for a hybrid electric/combustion powered vehicle having an internal combustion engine and a gear-shifting transmission unit. The drive apparatus includes a rotatable crank shaft operatively connectable to the internal combustion engine, and a rotatable transmission shaft operatively connectable to the gear-shifting transmission unit. The drive apparatus further comprises a movable annular rotor disposed annularly about the transmission shaft, the rotor including a permanent magnet for generating a magnetic field and an attachment mechanism for attaching the rotor to the transmission shaft so that torque can be transmitted between the rotor and the transmission shaft. The stationary annular stator is attachable to at least one of the internal combustion engine and the gear-shifting transmission unit and is disposed concentrically about and proximate the rotor in an electromagnetically interactive relation.

Abstract: An apparatus for modifying noise oscillations in a passenger compartment (12) of a motor vehicle (14) includes a memory device (38) for storing a plurality of predetermined oscillation patterns (SM), an operating condition determination device (18) for determining an operating condition (BZ) of the motor vehicle (14), a selector device (36) for selecting an oscillation pattern (SM) as a function of the determined operating condition (BZ) of the motor vehicle (14), and an oscillation generator device (39-42-44) for generating oscillations corresponding to the selected oscillation pattern (SM) into the passenger compartment (12) of the motor vehicle (14).

Abstract: A multiple plate friction clutch with a hub which has external gearing and a peripheral groove. A ring or a ring segment is placed in this groove and is used to fix the hub in place axially with respect to the clutch plates, which are non-rotationally engaged by means of internal gearing with the external gearing of the hub.

Abstract: Intermediate tube for a vibration damper with adjustable damping force, having a tub socket which has an overlap with a valve seat body and forms a hydraulic connection to a switchable bypass valve. Inside the tube socket there is an intermediate ring which is supported by means of a support on at least one opening side of the tube socket and has a greater axial length than the tube socket. This intermediate ring has a region forming a snap fastening to permit the intermediate tube to snap into place with a portion of the tube socket.

Abstract: A freewheel hub for bicycles to provide propulsion by means of a plurality of sprockets when a derailleur is used. A sprocket or gear carrier transmits the rotational forces introduced to the sprockets mounted on the sprocket carrier by means of a drive sleeve, a ratchet and a pawl carrier to a hub sleeve in the direction of rotation of the drive, whereby the ratchet represents a freewheel in the opposite direction of rotation. The propulsion unit, which consists of the sprocket carrier and the drive sleeve, is divided into two parts, and can therefore be manufactured easily with regard to its driving gearings and pawl gearing.

Abstract: Derailleur with at least two sprockets on a sprocket set which is located around a pedal axle of a bicycle, which sprockets are provided with chain transfer assistance measures to assist the transfer of the chain in upshifting or downshifting, whereby the shifting can be done under load in both of these directions. The chain transfer assistance measures comprise a tooth space with a spiral-shaped base, a conical rivet with an encircling sharp edge to locate the chain in the vicinity of its links between the chain plates, as well as bevels, recesses and steps, the totality of which optimize the chain transfer in both directions between sprockets which are coordinated with one another.

Abstract: A vibration damper having a pressure tube in which a piston with a piston rod is located so that the piston can move axially. The pressure tube is divided into upper and lower working chambers. The upper working chamber is connected by a hydraulic connection to the oil sump of an equalization chamber. The vibration damper also has at least one damping valve in the piston at least for the direction of flow from the upper working chamber to the lower working chamber, a port valve between a connection opening in the upper working chamber and the oil sump, a non-return valve in a bottom valve body which connects the lower working chamber with the equalization chamber and at least one additional damping valve in addition to the piston valve(s). In the insertion direction, the additional damping valve produces a damping which occurs as a function of the volume flow distribution.

Abstract: A dual-circuit hydraulic system for an active vehicle suspension control system to eliminate a rolling movement of a motor vehicle by using an adjustable stabilizer on a motor vehicle front axle and an adjustable stabilizer on a motor vehicle rear axle. The dual-circuit hydraulic system has at least one supply pump which uses at least one shuttle valve to supply a pressure medium, by way of supply lines, to at least one dual action actuator on each stabilizer. Each dual action actuator has at least two working chambers. In emergency operation of the shuttle valve, the working chambers of the at least one actuator on the rear axle are unblocked, so that in the event of a rolling movement of the vehicle, the pressure medium is transferred by being pushed out of the working chambers of the rear axle actuator by the action of the rolling movement of the vehicle on the rear axle stabilizer.