Abstract: A spreader unit for a drum brake is provided with a readjustment device which ensures that the clearance remains substantially constant even in the case of wear on the brake linings. The readjustment device is arranged between actuating pistons and changes the spacing of the actuating pistons in at least one readjustment step when an actuating travel of the first and second brake shoe holders has exceeded a travel setpoint value. A thermally actuable blocking device mechanically prevents the execution of the readjustment step by the readjustment device at a temperature above a temperature setpoint value.

Abstract: A centrifugal clutch is configured so that assist thrust can be maintained constant or can be decreased even when a clutch shoe is abraded. The centrifugal clutch includes a drive plate to be rotatably driven by drive force of an engine. The drive plate includes each of swing support pins and the plate-side cam bodies. The swing support pin is fitted in a long-hole-shaped pin slide hole formed at a clutch weight to swingably support the clutch weight. The plate-side cam body includes a cylindrical roller, and a weight-side cam body of the clutch weight contacts the plate-side cam body. The weight-side cam body is formed as such a curved surface that a cam angle when a clutch shoe contacts a cylindrical surface of a clutch outer is the same between before and after abrasion of the clutch shoe progresses.

Abstract: A powertrain for a motor vehicle includes a one mode continuously variable transmission (CVT) and a torque converter connected to a planetary gear set assembly which is connected to a pulley and a chain assembly or other continuously variable unit (CVU). The planetary gear set arrangement generally includes one planetary gear set, one brake and one clutch. The CVU is connected to a final drive unit. The sheaves of the CVU have an involute spline connection.

Abstract: A self-adjusting clutch (10) can include an automatic adjustment mechanism (20) for decreasing an axial dimension within a clutch pack (14). The adjustment can compensate for wear of the facing surfaces of interposed members located within the clutch pack (14), resulting from repeated engaging and disengaging under a clutch apply load within the clutch (10). The adjustment mechanism (20) can include a reaction plate (12) normally biased toward the clutch pack (14) by a plurality of first springs (22). The adjustment mechanism (20) can further include a plurality of pawls (24) supported for rotation by the reaction plate (12) and biased by a plurality of second springs (26) toward a locking position with respect to a ring member (36). The plurality of pawls (24) can lock the reaction plate (12) against axial movement in a direction of the clutch apply load during clutch actuation.

Abstract: Double clutch for coupling a drive shaft of a motor to a transmission shaft of a transmission in a vehicle having a first friction clutch for frictionally clamping a first clutch disc couplable to the transmission shaft between a first pressure plate and a first counter-plate, the first pressure plate displaceable in an axial direction to close the first friction clutch, a second friction clutch for frictionally clamping a second clutch disc couplable to an accessory power take-off between a second pressure plate and a second counter-plate, the second pressure plate displaceable in the axial direction to close the second friction clutch, a first actuating element configured to displace the first pressure plate, and, a second actuating element configured to engage a pressure ring connected to the second pressure plate to displace the second pressure plate, wherein the second actuating element is pre-loaded by at least one wire load ring.

Abstract: A clutch assembly, particularly for a friction clutch of a motor vehicle, with at least one clutch housing in which is arranged a diaphragm spring that acts on a pressure plate and is secured to the clutch housing by a holding ring with retaining tabs distributed over a circumference at a distance axially from the holding ring. The retaining tabs define an axial stop. A spring element is arranged between two adjacent structural component parts of the clutch assembly that are arranged between the holding ring and the axial stop of the retaining tabs that exerts an axial spring force on the adjacent structural component parts. The spring element is arranged on at least one retaining tab and has at least two edge-side support regions that extend in direction of the adjacent retaining tabs and at least partially contact one structural component part and at least one axial raised portion arranged between the support regions that at least partially contacts the other structural component part.

Abstract: A clutch device having at least one torque transfer device that can be engaged and disengaged in the axial direction and is frictionally engaged in the engaged state, and at least one wear adjustment device, which has at least one rotatable adjusting ring, at least one rotatably supported spindle drive with a drive pinion, which acts on the adjusting ring, and at least one drive assembly which may be made to engage with the drive pinion and which is pre-tensioned in the axial direction, to turn the spindle drive in the case of wear, the pre-tensioning force of the drive assembly being stepped.

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: A clutch adapted to transmit the motion from a driving shaft to a driven shaft, having an axis of rotation coaxial to the driven shaft and comprising, a ring gear, a first bell integral in rotation with the ring gear and coaxial to the axis of rotation, an axially fixed hub internal to the first bell and coaxial to the axis of rotation, an axially movable pressure assembly including a disk-pusher element, a disk pack, a plurality of elastic elements, and a centrifugal assembly. The clutch comprises at least one first clearance-recovery device of a unidirectional type, adapted to limit the separation of the disk-pusher element from the axially fixed hub and from the disk pack, and a second clearance-recovery device of a unidirectional type, adapted to enable an axial movement of the centrifugal assembly only towards the disk-pusher element.

Abstract: A self-adjusting twin or dual dry clutch assembly for a dual clutch transmission includes a single actuator. The clutch assembly includes one center and two outer clutch drive plates or discs which independently engage a pair of interleaved driven clutch plates or discs which are coupled to and drive a respective pair of transmission countershafts or layshafts. The single actuator translates an internal clutch carrier which acts upon the outer clutch plates through respective pluralities of linear one way clutches. Self-adjustment of the dual clutch assembly is achieved by additional linear one way clutches acting through pairs of spring biased control rods.

Abstract: A wear compensating device, including: at a first axial end, an annularly-shaped base element; an index trigger element connected to the base element; a first annularly-shaped element, at least partially rotatable with respect to the base element, engaged with the index trigger element, and at least partially rotatable with respect to the index trigger element; and at a second axial end, opposite the first axial end, a second annularly-shaped element with a first ramp, the second annularly-shaped element engaged with the first annularly-shaped element and rotatable with respect to the first annularly-shaped element. In response to a specified amount of displacement by a portion of the index trigger element, the first and second annularly-shaped elements are rotatable to change a circumferential position of the first ramp.

Abstract: It is an object of the present invention to shorten the axial dimension of the clutch cover assembly that includes a wear compensation mechanism and a low release load mechanism. A clutch cover assembly 1 includes a clutch cover 2, a pressure plate 3, a diaphragm spring 4, a first wear compensation mechanism 8, and a mechanism 30 to achieve low release load characteristic. The low release load characteristic achieving mechanism 30 is made of a support bolt 31, a holder 32, and a second adjust spring 39. The second adjust spring 39 is located on a side of the holder 32 near the friction member 53 in the axial direction.

Abstract: A clutch cover assembly 1 has a clutch cover 2, a pressure plate 3, a diaphragm spring 4, a first low release load characteristic achieving mechanism 8, and a second low release load characteristic achieving mechanism 30. The second low release load characteristic achieving mechanism 30 includes a support bolt 31, a holder 32, and an adjust spring 39. The adjust spring 39 is located on a side of the holder 32 near the friction member 53 in the axial direction.