Abstract: A clutch device includes a clutch center and a pressure plate operable to move toward or away from the clutch center and rotatable relative to the clutch center. The pressure plate includes a pressure-side cam portion. The clutch center includes a center-side cam portion. The pressure plate includes a boss extending in movement directions. The clutch center includes a through hole in which a boss is insertable. The through hole extends along circumferential directions and allows movement of the boss along the circumferential directions and the movement directions. While a surface of the pressure-side cam portion and a surface of the center-side cam portion are in contact with each other, a distal end of the boss projects outward from the through hole.

Abstract: A drive assembly including a primary inertia plate and clutch. The primary inertia plate is configured to be rotationally driven via a crankshaft. The clutch plate includes a body with a rotational axis (X). The clutch plate is configured to be rotationally driven by the primary inertia plate. The clutch plate includes at least one imbalance feature such that a center of gravity of the clutch plate is positioned away from the rotational axis (X). The imbalance feature generates a centrifugal force that counteracts or prevents rattling from being imparted to the clutch plate via engine vibrations through the primary inertia plate.

Abstract: A power transmission device has an interlocking member 9 moving a pressure member 5 from an inactive position to an active position. A release spring (m) applies an urging force, while allowing movements of the interlocking member 9 and the pressure member 5, until drive-side clutch plates 6 and driven-side clutch plates 7 reach an engaged state before the drive-side clutch plates 6 and the driven-side clutch plates 7 are pressed against each other. A clutch spring 11 is compressed in a process where the interlocking member 9 moves after the drive-side clutch plates 6 and the driven-side clutch plates 7 have reached the engaged state. The clutch spring applying a press-contact force between the drive-side clutch plates 6 and the driven-side clutch plates 7 while allowing movements of the interlocking member 9 and the pressure member 5. The set load of the clutch spring 11 is set to be smaller than the maximum load of the release spring (m).

Abstract: Friction clutch pressure plate device 11 which is provided between spring device 12 and clutch disc unit 4 of friction clutch 1 comprises primary pressure plate 19, secondary pressure plate 22 which is capable of approaching and receding from primary pressure plate 19, and a plurality of weight plates 23 which are slidably arranged between mutually opposed side faces 19a, 22a of primary pressure plate 19 and secondary pressure plate 22. Primary pressure plate 19 comprises first outer circumferential wall 25 having inclined inner wall face 24, secondary pressure plate 22 comprises second outer circumferential wall 28 having perpendicular inner wall face 27, and weight plate 23 comprises tip portion engaging surface that engages with perpendicular inner wall face 27 and a tip portion inclined surface 32 that engages with inclined inner wall face 24.

Abstract: The lock-up device of a torque converter includes an input side clutch supporter fixed to a front cover for transmitting a power from a drive side; a plurality of clutch plates supported by the input side clutch supporter; a lock-up piston to pressurize the clutch plate to make the clutch connected; a piston guide supporting the end portion of the lock-up piston; a spring pack fixed to the lock-up piston, installed between the lock-up piston and the input side clutch supporter and including an elastic body that presses the lock-up piston in the direction of releasing the clutch; and an mutual rotation prevention mechanism that prevents a relative rotation between the lock-up piston and the input side clutch supporter.

Abstract: A clutch apparatus is provided which includes a center clutch and a pressure clutch that can hold a clutch plate without falling off of the clutch plate and also prevent a reduction in strength. A clutch apparatus 100 includes a center clutch 105 and a pressure clutch 112, which hold clutch plates 104 placed facing friction plates 103 that are rotationally driven by a driving shaft. The center clutch 105 includes a center-side mating portion 108 mating with internal teeth of the clutch plate 104. In addition, the center-side mating portion 108 includes a protruding tooth 110. The pressure clutch 112 includes a pressure-side mating portion 116 mating with internal teeth of the clutch plate 104. In addition, the pressure-side mating portion 116 includes a run-off 117. The protruding tooth 110 extends over the run-off 117 of the pressure-side mating portion 116, as one of spline teeth forming the center-side mating portion 108.

Abstract: A power transmission device has a pressure member (5) pressing drive-side clutch plates and driven-side clutch plates against each other or releasing a press-contact force. A clutch spring (10) urges the pressure member (5) in a direction so that the clutch plates are pressed against each other. A separate receiving member (11) is attached to the pressure member (5). A back-torque limiting cam reduces press-contact force between the clutch plates when the rotation speed of an output member exceeds the rotation speed of an input member. A rotation restricting portion (8a) restricting rotation, relative to the clutch member (4), of the pressure member (5) that has moved due to activation of the push rod (9). A clearance t is maintained between the pair of cam surfaces that constitute the back-torque limiting cam.

Abstract: A power transmission device has a back torque transmission cam that brings driving clutch plates 6 and driven clutch plates 7 into press contact with each other. A second clutch member 4b is moved when a rotational force is input to a first clutch member 4a via the output shaft 3. The pressure member 5 is located at a non-actuation position. A torque transmission portion transmits a rotational force transmitted to the second clutch member 4b to the first clutch member 4a not via the back torque transmission cam.

Abstract: A power transmission device has a back torque transmission cam that brings driving clutch plates 6 and driven clutch plates 7 into press contact with each other. This occurs by moving a second clutch member 4b when a rotational force is input to a first clutch member 4a, via the output shaft 3. A pressure member 5 is located at a non-actuation position. A back torque transmission cam can hold abutment between an interlocking member 9 and weight member 8 by moving the second clutch member 4b in a direction of being brought into proximity to the interlocking member 9.

Abstract: A structurally and/or functionally improved friction clutch device is disclosed. In particular, a servo spring for a clutch is to be provided which is suitable for series production. In particular, the servo spring is to be realized in the clutch while integrating already existing components. In particular, the servo spring is to keep a maximum disengaging force low. In particular, the servo spring is to operate only under worn conditions; in the new state and during separation it should be possible for it to be force-free. In particular, the total tolerance in the friction clutch device is to remain small, so that the susceptibility of the servo spring force to tolerance deviations is limited.

Abstract: A frictional shift element for a motor vehicle transmission includes a first frictional element allocated to a first carrier; and a second frictional element allocated to a second carrier. One of the first frictional element or the second frictional element has an annular frictional surface, and the other of the first frictional element or the second frictional element has a corresponding frictional surface with at least one frictional surface that protrudes along a radial direction in an overlapping area.

Abstract: A disconnect clutch includes a hub, a carrier, a wedge plate, a friction plate, a pressure plate, and a pin. The hub has a radially outer surface with a ramp and the carrier has a radially inner surface. The wedge plate is disposed radially between the hub and the carrier. It has a radially inner surface with a ramp, proximate and complementary to the hub outer surface, a radially outer surface proximate the carrier inner surface, and a split extending from the radially inner surface to the radially outer surface. The friction plate is drivingly connected to the carrier. The pressure plate is arranged for frictionally engaging the wedge plate with the at least one friction plate. The pin is rotationally fixed and radially or axially displaceable with respect to the hub, and arranged for limiting rotation of the at least one wedge plate relative to the hub.

Abstract: A powertrain mechanism comprising a carrier plate facing the engine side, a fixation plate facing the gearbox side, a drive plate positioned between said plates and provided such that there is a partial rotation freedom with respect to these plates, for transferring the power, received from the engine, to the gearbox, in vehicles having at least internal combustion engine, characterized by comprising at least one third friction element seating onto at least one friction region provided on one of said plates after being positioned between the carrier plate or fixation plate and drive plate, at least one connection plate fixing said third friction element to the friction region in order to keep a distance between the third friction element and the opposite plate, and at least one drive leg placed into at least one drive housing provided on the opposite plate by extending from the third friction element towards the opposite plate.

Abstract: In a drive force transmission device, a dry multi-plate clutch is disposed in a closed space for connecting and disconnecting a transmission of drive force. The dry multi-plate clutch includes a drive plate, a driven plate, a frictional face, a front cover and a splash guard. The drive plate is splined to a clutch hub. The driven plate is splined to a clutch drum. The front cover has an air intake port for taking external air into the closed space, and an air venting port for ejecting an air stream from within the closed space to the external air. The splash guard covers the air intake port and the air venting port of the front cover. The splash guard has an opening for drawing in external air through the air intake port and venting an air stream through the air venting port.

Abstract: The invention includes at least two free disks arranged between a drive-torque transmission disk and an output-torque receiving disk, each of the at least two free disks being freely rotatable. When a torque is to be transmitted, mutual gaps between the drive-torque transmission disk, the at least two free disks and the output-torque receiving disk are narrowed, so that the input torque of the driving unit is transmitted from the drive-torque transmission disk to one free disk adjacent to the drive-torque transmission disk by friction, the torque transmitted to the one free disk is transmitted to another free disk adjacent to the one free disk by friction, and the torque transmitted to the or another free disk on the most output-shaft side is transmitted to the output-torque receiving disk by friction.

Abstract: A power transmitting apparatus which can suppress the rotational vibrations by suppressing rotation of the pressure member relative to the clutch member is provided. The power transmitting apparatus can comprise a clutch housing rotatable together with an input member and a plurality of driving-side clutch discs mounted thereon; a clutch member with a plurality of driven-side clutch discs mounted thereon and interleaved with the driving-side clutch discs; and a pressure member axially movably relative to the clutch member to increase or release the press-contacting force acting on the driving-side clutch discs and the driven-side clutch discs. The power transmitting apparatus can further comprise one or more slide-suppressing members for applying sliding resistance to the pressure member when the pressure member is rotated relative to the clutch member.

Abstract: A drive force transmission device includes a clutch operatively interposed between a hub member and a drum member to selectively transmit drive power therebetween. A first rotating shaft member is coupled to the hub member to rotate with the hub member. A second rotating shaft member is coupled to a separating wall part of the drum member to rotate with the drum member. A support member rotatably supports the second rotating shaft member via a bearing. The support member includes a restriction part that restricts axial movement of an outer race of the bearing. A bottom portion of the separating wall part is a radially offset towards the bearing space with respect to a top portion of the separating wall so that the bottom portion radial overlaps with the restriction part as viewed perpendicular to a rotational axis of the drum member.

Abstract: A hydraulic clutch including a clutch drum with an outer cylinder fitted with a plurality of clutch plates and a side wall; a clutch piston that defines together with the clutch drum an engagement oil chamber, and moves in an axial direction to press the clutch plates by hydraulic pressure supplied to the engagement oil chamber; and a cancel plate that defines together with the clutch piston a cancel oil chamber that cancels centrifugal hydraulic pressure. The side wall of the clutch drum is formed with a first oil passage that radially extends and is in communication with the engagement oil chamber, and a second oil passage that radially extends and is in communication with the cancel oil chamber. One of the first and second oil passages is at least partially included in a range of an axial width of the other of the first and second oil passages.

Abstract: A starting device configured with a multi-plate clutch and a damper device. The damper device may include an input element to which power from a motor is transmitted via the multi-plate clutch, an outer peripheral-side elastic body to which the power is transmitted from the input element, an inner peripheral-side elastic body that is placed on an inner peripheral side of the outer peripheral-side elastic body, an intermediate element that transmits the power from the outer peripheral-side elastic body to the inner peripheral-side elastic body, and an output element to which the power is transmitted from the inner peripheral-side elastic body. The input element may be coupled to a clutch drum of the multi-plate clutch so that the input element and the clutch drum interpose the intermediate element therebetween.

Abstract: A friction clutch having a clutch ring and having two clutch disks, which are mounted so as to be rotatable about a clutch axis of rotation and on which friction surfaces are formed, is presented. In this case, the clutch ring and the clutch disks can be moved parallel to the clutch axis of rotation and relative to one another in such a way that, for torque transmission, first friction surfaces on each of the clutch disks can be moved into frictional surface contact with a respective second friction surface on the clutch ring. A first and a second friction surface in each case are matched to one another as a friction surface pair, having in each case a friction surface curved convexly in the direction of the clutch axis of rotation and a friction surface curved concavely in the direction of the clutch axis of rotation.

Abstract: A backing plate for a friction clutch pack includes a shoulder or flange through which a plurality of radial drain passageways extend. The radial drain passageways intersect a circumferential channel which collects hydraulic fluid from the friction clutch. The radial passageways, assisted by centrifugal force, direct hydraulic fluid flow radially outwardly, away from other friction pack clutches and thus prevent such fluid from creating drag and causing increased spin losses as it flows to and through disengaged clutch packs.

Abstract: A device is provided that includes a torque-transmitting mechanism selectively engageable by radially-outward force to transfer torque between a rotatable input member and a rotatable output member. A mass is connected for rotation with the output member and is configured to move radially outward as the output member rotates to reduce torque transfer from the input member to the output member as the speed of the output member approaches the speed of the input member. Furthermore, the mass connected for rotation with the output member may create a force that causes torque transfer between the input member and the output member when the output member rotates faster than the input member.

Abstract: A limited slip differential assembly includes a planetary gear assembly, a differential case, a differential gear assembly and a hydraulic clutch assembly. The differential case is coupled for rotation with a portion of the planetary gear assembly. The differential gear assembly is arranged within the differential case and includes a first side gear and a second side gear for coupling with first and second drive wheels of a vehicle, respectively. The hydraulic clutch assembly includes a clutch pack and a clutch actuator. Pressurized hydraulic fluid from a transmission pump is selectively provided to the clutch pack to actuate the clutch pack between an open configuration, in which the side gears rotate independently, and a fully closed configuration, in which the side gears rotate together such that the first and second drive wheels rotate at a same speed.

Abstract: A transmission clutch cooling system includes a clutch housing defined between a drive hub of a drive member and a clutch hub of a driven member and a clutch assembly housed in the clutch housing. The clutch hub includes a hub deck having a plurality of bores therethrough, an inner annulus extending axially from the hub deck, and an outer annulus extending axially from the hub deck, the outer annulus including a plurality of radial orifices therethrough and a lip flange extending from a distal end towards the inner annulus. The clutch assembly includes a plurality of clutch plates secured to the drive hub and a plurality of friction plates secured to the driven member. A piston assembly is provided for engaging or disengaging the plurality of friction plates against the plurality of clutch plates to cause or release integrated rotation of the drive member and the driven member.

Abstract: An electromechanical actuating assembly for at least an actuator element of a vehicle transmission with at least a drive device which activates a spindle drive (2) of an actuator device to actuate the actuator element. The actuator device comprises a toggle lever mechanism (4) which is activated via the spindle drive (2), and the actuator device is positioned coaxially with a transmission shaft (5) of the vehicle transmission and is positioned radially inside or radially outside with reference to the actuator element.

Abstract: A normally closed automotive clutch with hydraulic drive and having: a stack of driven and driving plates, which are mounted so as to rotate around a rotation axis; a pressure ring, which is mechanically coupled to the stack of plates and can axially slide so as to axially compress the stack of plates; at least one elastic closing element, which presses the pressure ring; a hydraulic actuator comprising an inner actuation chamber, which is suited to be filled with a fluid under pressure so as to generate an opening thrust, and a sliding piston, which is coupled to the inner actuation chamber and is mechanically connected to the pressure ring; and a box, which is provided with a lateral lid and houses the stack of plates, the pressure ring, the elastic closing element, and the hydraulic actuator.

Abstract: A transmission utilizes a three clutch module. The clutch module may be pre-assembled before it is assembled into the transmission. All three clutch packs are splined to a common shell at their outer diameter. One of the clutch pistons passes through openings in the clutch pack of one of the other clutches. The common shell is fixedly coupled to a hollow shaft through which the transmission input shaft protrudes. Pressurized fluid to engage the three clutches is routed through axial passageways in the input shaft.

Abstract: A wet clutch for a motorcycle having an outer basket having a first toothing as the input side of the wet clutch, an inner basket which is coaxial to the outer basket having a second toothing as the output side of the wet clutch, first frictional elements which are torsionally connected to the outer basket, second frictional elements which are torsionally connected to the inner basket, the first and second frictional elements being situated axially alternating between the inner basket and the outer basket, and a clamping element to compress the first and second frictional elements axially in order to produce a torsional connection between the input side and the output side. The inner basket and/or the outer basket can essentially be produced from one or more sheet metal parts.

Abstract: The present invention relates to a clutch mechanism preferably used in a vehicle door mirror with a high durability and which allows reaching, in a fast and simple way, a preset compression level owing to the existence of two limiting surfaces

Abstract: An axle assembly comprises a power transmission device including a housing having a cylindrically shaped sidewall. The power transmission device selectively communicates rotatable motion from an input member to an output member. A frictional clutch is disposed in the housing and includes a drum. A first and a second axle shaft selectively drive a first and a second drive wheel, respectively. A differential selectively transfers drive torque from the output member to at least one of the first and second axle shafts. An electric motor comprising a coil and a plurality of magnets is provided on the axle assembly. In one example, the coil is disposed on the housing and the magnets are disposed on the drum. The coil is configured to selectively energize to provide one of a positive or negative torque input to the output member.

Abstract: A magnetic path forming member is formed by heating a radially intermediate portion of a workpiece made of a magnetic material to melt the radially intermediate portion from one axial face of the workpiece to the other axial face of the workpiece to form a keyhole, and disposing an alloy element in a molten pool around the keyhole to demagnetize a melted portion.

Abstract: A clutch assembly includes a first set of clutch plates and a second set of clutch plates interweaved with the first set of clutch plates. The second set of clutch plates is coupled to a rotatable inner hub, and a stationary backing plate is mounted about the inner hub. The first set of clutch plates is coupled to the backing plate such that the first set of clutch plates and the second set of clutch plates are compressed together with one of the first set or the second set of clutch plates abutting against the backing plate when the clutch assembly is engaged. The clutch assembly further includes a connecting hub coupled to the inner hub, such that the connecting hub supports the stationary backing plate with a bearing disposed between the connecting hub and the backing plate.

Abstract: A torque transmission device for the transmission of torque between a first component and a second component which are mounted such that they can rotate about a common rotational axis. The torque transmission device includes a clutch configured to actuate in the axial direction and an actuation unit with a converter device and an actuating device. The converter device includes at least one axially movable first converter element and a second converter element assigned to the second component. The converter elements are configured such that relative rotation between the first and the second converter elements is converted into an axial movement of the first converter element to actuate the clutch. The actuating device is configured to generate selective coupling action between the first converter element and a structural element of the clutch.

Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of coupling members, and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least ten forward gear ratios and one reverse gear ratio. At least one of the torque transmitting mechanisms includes a backing plate having an annular outlet for distributing cooling fluid.

Abstract: Clutch arrangement for a motor vehicle gearbox. The clutch arrangement has a housing and a clutch. The clutch is arranged in the housing and is arranged concentrically with a shaft, which extends in a longitudinal axis. The shaft is supported on the housing by means of a first shaft bearing adjacent to the clutch and by means of a second shaft bearing spaced at an axial distance from the clutch. The clutch arrangement has an actuator arrangement for actuating the clutch. The actuator arrangement is designed to exert an actuating force on the clutch in a first longitudinal direction. The actuator arrangement here being axially braced on the housing and a force flux being introduced into the shaft as a result of the actuating force. The first shaft bearing is arranged so that the force flux introduced into the shaft can be axially braced on the housing by way of the first shaft bearing.

Abstract: A rotating clutch operably disposed between two rotating components includes a hydraulic operator having a piston and, on one side of the piston, an apply chamber or cavity and, on the opposite side of the piston, a balance chamber or cavity. The apply chamber is selectively provided with pressurized hydraulic fluid to engage and release the clutch to couple and de-couple the two rotating components. The balance chamber is provided with a flow of pressurized hydraulic fluid from the transmission lubrication system that flows through the transmission main shaft and flow restricting passages to the balance chamber. An exhaust port downstream of the balance chamber releases excess hydraulic fluid flow. Thus, whether, the clutch is rotating or not, hydraulic pressure is maintained in the balance chamber and proper clutch operation is assured.

Abstract: One embodiment includes an annular end plate for a plate assembly of a frictionally operating device, having a friction section, extending in the radial direction, to form a flat front side, which can be turned toward the plate assembly in a first axial direction, and having a rotary driving section, which integrally adjoins the friction section in the first radial direction. The end plate may have a reinforcing section, which integrally adjoins the friction section in the opposite, second, radial direction, the reinforcing section or the first section of the reinforcing section, that adjoining the friction section, being at least partially and preferably completely bent through more than 90° in the opposite, second, axial direction relative to the friction section. The present invention furthermore relates to a frictionally operating device having an end plate of this kind and to a method for the production of an end plate of this kind.

Abstract: A drive disconnect clutch assembly, including: an input component arranged to receive torque from a motor; an output gear; and a clutch. The clutch includes: a piston plate; at least one clutch plate; at least one wedge plate; and respective friction material disposed between the at least one clutch plate and the at least one wedge plate. The piston plate is arranged to: displace a first distance in a first axial direction to clamp the at least one clutch plate and the at least one wedge plate to lock rotation of the input component to rotation of the output gear; and displace further in the first axial direction to displace the at least one wedge plate to lock respective rotations of the input component and the output gear via contact of the at least one wedge plate with the input component and the output gear.

Abstract: The invention relates to a friction ring, in particular for wet-running clutches or transmissions, having a carrier (10) and a friction lining (12), with a friction lining starting material (20) being a mixture at least of a thermosetting binder and a filler, and with the friction lining starting material (20) having a non-flowable, pasty processing consistency and the friction lining (12) having a solid final consistency after processing on the carrier (10). The invention further relates to a method of producing such a friction ring.

Abstract: A clutch device includes an input rotor, a rotation support mechanism, a first pressure plate, a second pressure plate, a first clutch disc assembly and a second clutch disc assembly. The input rotor includes a first disc portion and a second disc portion disposed away from the first disc portion at a predetermined space. The rotation support mechanism supports the input rotor for allowing the input rotor to be rotated with respect to a first input shaft and a second input shaft.

Abstract: A multiple-disk clutch has inner and outer clutch members, and a plurality of driving and driven friction disks. The driven and driving friction disks are arranged alternately. A first axially movable pressure member is biased to urge the driving and driven friction disks together in a compression direction. A first actuation system is connected to the first pressure member. The first actuation system is adapted release the compression force exerted by the first pressure member on the driving and driven friction disks. A second actuation system includes a second pressure member and is axially movable to compress the driving and driven friction disks together. The driving and driven friction disks are disposed between the first and second pressure members. The second actuation system is a centrifugal actuation system. The first actuation system is connected to and is axially movable with the second pressure member.

Abstract: A friction clutch assembly that selectively engages an input member and an output member to allow selective transfer of torque therebetween is provided. A clutch pack includes a first clutch member and a second clutch member. One of the first clutch member or the second clutch member is operatively coupled to the input member. The other of the first and second clutch members is operatively coupled to the output member. The first clutch member comprises an annular body that has a circumferential outer surface including a plurality of splines extending outwardly from the annular body. At least one of the splines has a deflected portion that is integrally formed with the annular body and curved in a circumferential direction toward a distal tip.

Abstract: A torsion lock may include a clutch, a spring, and a shape memory alloy (SMA) member. The spring may cause the application of pressure on the clutch for engagement thereof. The SMA member may linearly contract when heated in a manner to relieve the pressure on the clutch for disengagement thereof.

Abstract: An annular core plate for a multiplate clutch assembly includes a main annular portion and an engagement annular portion extending from the main annular portion. The engagement annular portion has teeth extending therefrom. The teeth are thicker than the main annular portion. A multiplate clutch assembly is provided that includes at least one annular core plate or friction plate and at least one annular separator plate. A method of constructing at least one plate for a multiplate clutch assembly is also provided. The method includes forming an annular separator plate from sheet metal by removing a circular section from a separator plate main body portion of the sheet metal, removing a portion of the circular section to form teeth in the circular section, and attaching the circular section to an annular plate.

Abstract: A clutch device for arrangement in a drive train of a motor vehicle between a drive unit and a transmission is provided. The clutch device may include a multiple-disk clutch arrangement for selective torque transfer between the drive unit and the transmission. The multiple-disk clutch arrangement may be actuable via a force transfer element supported on a disk carrier of the multiple-disk clutch arrangement.

Abstract: A annular core plate for a multiplate clutch assembly includes a spline with a plurality of teeth. At least one of the plurality of teeth is either partially or fully extruded to a thickness greater than the thickness of a base material for the core plate. The spline may be disposed around the inner surface of the annular core plate or may be disposed around the outer surface of the core plate. The core plate can be a core plate associated with a friction plate or can be a core plate associated with a separator plate.

Abstract: One embodiment of the present invention is a unique clutch system. Another embodiment is a unique clutch system. Another embodiment is a unique method. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for clutch systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

Abstract: A wet clutch comprising at least one friction disk (10) which is loaded by a piston (5) against an end disk (4). In order to run a forced pressure medium flow over the friction surfaces (11, 12) of the wet clutch, two pressures cavities (7, 8) having a connection in the region of the friction surfaces, are loaded with varying pressures. In order to improve such arrangements, the invention proposes that the leakage flow flowing over the supports of the friction disks is limited.

Abstract: A torque transmitting device for transmitting torque between a first and second members includes an annular piston that defines an axis and an apply plate translatable along the axis between an unengaged position and an engaged position. The apply plate has a first end disposed radially inward of a second end and is in contact with the piston. An apply disc is rotationally coupled to the first member and is translatable between unengaged and engaged positions. The apply disc is disposed radially outward of the piston. A backing disc is rotationally and axially fixed to the first member and disposed radially outward of the piston. A friction plate is disposed between the apply disc and the backing disc. The friction plate has a first end disposed radially inward of a second end and is rotationally coupled to the second member. The friction plate is disposed radially outward of the piston.

Abstract: A clutch release mechanism includes a fixed cam plate having a cylindrical boss portion, and a movable cam plate supported on the cylindrical boss portion through a cylindrical projecting portion thereof. A ball unit is retained on the cylindrical boss portion by a retainer, and a release member disengages a clutch by transmitting a thrust force, generated by relative turning between the fixed and movable cam plates which hold the ball unit therebetween, to a pressure-applying plate. A pressing member is pressed by the movable cam plate to transmit the thrust force to the release member. The cylindrical projecting portion of the movable cam plate projects toward the pressing member, and is fitted a the hollow portion thereof with a gap therebetween. The movable cam plate presses the pressing member so as to be relatively shiftable on a flat surface perpendicular to a pressing direction.