Abstract: A clutch having a pre-clutch and a main clutch, where the pre-clutch can be brought to an engaged or a disengaged state by a tensioning means, the pre-clutch being connected to the main clutch by means of an operative connection in such a way that the disengaged position and the engaged position are transmitted to the main clutch, and where the tensioning means is supported on a clutch basket of the main clutch.

Abstract: A clutch including a pre-clutch and a main clutch, where the pre-clutch can be brought into an engaged or disengaged state by a disc spring, where the pre-clutch is connected via an effective connection to the main clutch, such that in the disengaged position and engaged position are transmitted to the main clutch, where the pre-clutch is arranged between the main clutch and a connection area for an actuating element of the disc spring, that the disc spring is effectively connected to an outer area by means of a clutch hub of the pre-clutch, that the disc spring is effectively connected in a middle area to a disc of the counter-disc of the pre-clutch, and that the disc spring has a contact area for the actuating element in an inner area.

Abstract: A clutch device including at least one torque transmission device engageable and/or disengageable in an axial direction by a lever element and forming a friction-locking connection when engaged, at least one wear readjustment device that includes at least one rotatable ramp ring at least temporarily clampable by the lever element and at least one spindle drive rotatably supported to act on the ramp ring and including a spindle shaft, where the wear readjustment device includes at least one infinitely variable freewheel unit to rotate the spindle shaft in the case of a sensed wear condition of the torque transmission device, the infinitely variable freewheel unit including at least one wrap spring or at least one freewheel sleeve.

Abstract: The present invention relates to an adjusting device for a friction clutch of a motor vehicle, having a spindle, a spindle nut screwed onto the spindle to carry along an adjusting element to adjust a wear-related incorrect gap between a counter plate and a pressure plate for pressing a clutch plate between the pressure plate and the counter plate, and an essentially frictionally engaged and/or essentially stepless means of swiveling for swiveling the spindle to adjust the wear-related incorrect gap, as well as to a friction clutch having such an adjusting device.

Abstract: The invention relates to a clutch device, for example, a booster clutch device, including a first clutch element and a second clutch element, where a torsion spring device is provided coupling the first clutch element to the second clutch element, the torsion spring device having a multi-stage spring characteristic.

Abstract: A wet clutch including a main clutch, a clutch basket, which is actively connected to a crankshaft, forming an intake part and having a plurality of discs mounted therein so as to be rotatably fixed and axially displaceable, a clutch hub which is connected to a transmission input shaft, forming an output part and having counter-discs that are layered in an alternating manner with the plurality of discs, where the counter-discs are mounted so as to be rotatably fixed and axially displaceable, and a pilot clutch, actuated by means of a lever element, where the pilot clutch is upstream from the main clutch and the pilot clutch and the main clutch are connected to each other by means of a ramp device which is provided, in the circumferential direction, with ramps that are active at least in the direction of traction of the internal combustion engine.

Abstract: A friction clutch having a wear adjuster that compensates for wear in the form of an incorrect spacing between the pressure plate and the pressing plate as a result of an abrasion of the clutch friction linings. The incorrect spacing between the disk spring and the pressing plate is compensated by a ramp device. The ramp device and the pressing plate are coupled to one another by a positive connection, which, in order to compensate for the incorrect spacing, is temporarily suspended only when the incorrect spacing has been detected by a position sensor.

Abstract: The invention relates to a clutch device, for example, a booster clutch device, including a first clutch element and a second clutch element, where a torsion spring device is provided coupling the first clutch element to the second clutch element, the torsion spring device having a multi-stage spring characteristic.

Abstract: A clutch including a pre-clutch and a main clutch, where the pre-clutch can be brought into an engaged or disengaged state by a clamping means, where the pre-clutch is connected via an effective connection to the main clutch, such that in the disengaged position and engaged position are transmitted to the main clutch, where the pre-clutch is arranged between the main clutch and a connection area for an actuating element of the clamping means, that the clamping means is effectively connected to an outer area by means of a clutch hub of the pre-clutch, that the clamping means is effectively connected in a middle area to a disc of the counter-disc of the pre-clutch, and that the clamping means has a contact area for the actuating element in an inner area.

Abstract: A wet clutch including a main clutch, a clutch basket, which is actively connected to a crankshaft, forming an intake part and having a plurality of discs mounted therein so as to be rotatably fixed and axially displaceable, a clutch hub which is connected to a transmission input shaft, forming an output part and having counter-discs that are layered in an alternating manner with the plurality of discs, where the counter-discs are mounted so as to be rotatably fixed and axially displaceable, and a pilot clutch, actuated by means of a lever element, where the pilot clutch is upstream from the main clutch and the pilot clutch and the main clutch are connected to each other by means of a ramp device which is provided, in the circumferential direction, with ramps that are active at least in the direction of traction of the internal combustion engine.

Abstract: A friction clutch for a drive train, the clutch including a pressure plate rotatably fixed and axially displaceable relative to a housing. A disc spring is provided between the housing and the pressure plate to axially act on the pressure plate. An adjusting device is effective between the housing and the disc spring to compensate for friction lining wear of a clutch plate that interacts with the pressure plate when the clutch is operated in the drive train. The disc spring is pivotable relative to an annular support carried by the housing. An axial force is applied to the disc spring in the direction of the support by springs that include a leaf-spring, a sensor spring, and an additional spring.

Abstract: A friction clutch having a wear adjuster that compensates for wear in the form of an incorrect spacing between the pressure plate and the pressing plate as a result of an abrasion of the clutch friction linings. The incorrect spacing between the disk spring and the pressing plate is compensated by a ramp device. The ramp device and the pressing plate are coupled to one another by a positive connection, which, in order to compensate for the incorrect spacing, is temporarily suspended only when the incorrect spacing has been detected by a position sensor.

Abstract: A friction clutch for a drive train, the clutch including a pressure plate rotatably fixed and axially displaceable relative to a housing. A disc spring is provided between the housing and the pressure plate to axially act on the pressure plate. An adjusting device is effective between the housing and the disc spring to compensate for friction lining wear of a clutch plate that interacts with the pressure plate when the clutch is operated in the drive train. The disc spring is pivotable relative to an annular support carried by the housing. An axial force is applied to the disc spring in the direction of the support by springs that include a leaf-spring, a sensor spring, and an additional spring.

Abstract: A device for suspension and level adjustment in motor vehicles has a first connection element for connecting to at least one vehicle wheel, a second connection element for connecting to the body of the motor vehicle, at least one chassis spring, and an adjusting device. The adjusting device has two bearing points which are adjustable in their distance to one another via a gear driven by a motor. A first bearing point is connected to one connection element. A second bearing point is supported against the other connection element via the chassis spring. The gear has a coiled spring and at least one engagement element which engages between at least two coils of the spring adjacent to one another. The gear spring is assigned to the one bearing point and the engagement element is assigned to the other bearing point. The gear spring and the engagement element are pivotably mounted relative to one another and, for adjusting the distance of the bearing points, are able to be rotationally driven using a drive motor.

Abstract: A motion transmitting apparatus wherein an electric motor, an engine or another prime mover rotates an axially fixed first part relative to a coaxial axially movable non-rotatable second part. The structure which serves to move the second part axially in response to clockwise or counterclockwise rotation of the first part includes a follower borne by the first part and a helical spring having end convolutions affixed to the first part. The follower extends between two intermediate convolutions of the helical spring. If the apparatus is utilized in the power train of a motor vehicle, the axially movable part can serve to engage or disengage or change the extent of engagement of the friction clutch between the output element of the engine and the input element of the change-speed transmission.

Abstract: A lever system for actuating a clutch or a brake for a vehicle, such as a motor vehicle. The actuating force for the clutch or transmission brake is changeable by displacing a fulcrum with respect to a lever. An energy storage mechanism may act at one end portion of the lever and a pressure plate of a clutch or a transmission brake may act, directly or indirectly, on the other end portion.

Abstract: An apparatus which can effect relative movements between first and second parts that are rotatable relative to each other between several positions utilizes a helix having a stack of convolutions and being non-rotatably associated with one of the parts, a follower (such as a pin or an eccentric or an annulus of rolling elements) which is arranged to extend between at least two convolutions of the helix and is affixed to the other part, an electric or fluid-operated or other suitable motor which serves to rotate at least one of the parts relative to the other part, a further part (such as the release bearing for a clutch in the power train of a motor vehicle) which is movable axially with and relative to the first part, and a coupling device serving to separably connect the further part to the first part except in at least one selected position of the second part relative to the first part. Such arrangement facilitates convenient separation of the clutch from the means for operating the release bearing.

Abstract: A lever system for actuating a clutch or a brake for a vehicle, such as a motor vehicle. The actuating force for the clutch or transmission brake is changeable by displacing a fulcrum with respect to a lever. An energy storage mechanism may act at one end portion of the lever and a pressure plate of a clutch or a transmission brake may act, directly or indirectly, on the other end portion.

Abstract: First and second automatically operable friction clutches in the power train of a motor vehicle are connected between a rotary output element of the prime mover and first and second input elements of a change-speed gearbox. The wear upon the friction linings on the clutch disc of one of the clutches is frequently different from the wear upon the friction linings on the clutch disc of the other clutch. This is compensated for by automatically ascertaining the extent of wear upon the friction linings of the two clutches and by carrying out remedial undertakings such as temporarily reducing or interrupting the wear upon the friction linings which were subjected to more pronounced wear and/or increasing the wear upon the other friction linings.

Abstract: An apparatus which can effect relative movements between first and second parts that are rotatable relative to each other between several positions utilizes a helix having a stack of convolutions and being non-rotatably associated with one of the parts, a follower (such as a pin or an eccentric or an annulus of rolling elements) which is arranged to extend between at least two convolutions of the helix and is affixed to the other part, an electric or fluid-operated or other suitable motor which serves to rotate at least one of the parts relative to the other part, a further part (such as the release bearing for a clutch in the power train of a motor vehicle) which is movable axially with and relative to the first part, and a coupling device serving to separably connect the further part to the first part except in at least one selected position of the second part relative to the first part. Such arrangement facilitates convenient separation of the clutch from the means for operating the release bearing.