Abstract: A multi-plate clutch includes an outer plate mounted on a radial outside and axially displaceable, an inner plate mounted on a radial inside and axially displaceable, and a plurality of leaf springs. The plurality of leaf springs is distributed around an outer circumference of the outer plate to mount the outer plate in a torque-transmitting manner on a rotor pot, or the plurality of leaf springs is distributed in an inner circumference of the inner plate to mount the inner plate in a torque-transmitting manner on a driving ring. In an example embodiment, the multi-plate clutch is a dry multi-plate clutch for a hybrid drivetrain. In an example embodiment, the multi-plate clutch includes a plurality of outer plates and a plurality of inner plates.

Abstract: A reaction plate suitable for use in a torque converter is disclosed. The reaction plate has a main plate area and a webbing area at the perimeter of the main plate area, wherein the webbing area is curved out of the plane of the main plate area. The reaction plate has two sizes of coupling windows. The wider windows have both a drive torque transfer tooth and a coast torque transfer tooth. The narrower windows have only a drive torque transfer tooth. This allows for more material to be present in the webbing area, increasing its durability or allowing the use of lighter or less expensive materials in the construction of the reaction plate.

Abstract: A clutch subassembly for a motorcycle includes a hub, a plurality of driven discs and an elastic element. The hub includes a plurality of projecting protrusions, wherein the plurality of projecting protrusions define wide through openings capable of promoting a lubrication and, at a same time, the plurality of projecting protrusions reduce a weight of the clutch subassembly.

Abstract: The present disclosure provides a wet friction engaging device. The device includes: a plate group engaged with two connecting members and including two groups of friction plates housed in a plate housing chamber and alternately arranged; and a spring attached between a spring plate and an end plate. The plate group is switched between an engaged state in which the friction plates are in close contact with each other, and a disengaged state in which the friction plates are separable from each other. The spring plate is fixed to the end plate.

Abstract: A clutch arrangement is formed with drive-side and, output-side clutch elements and a clutch piston for operative connection and disengagement between the drive-side and output-side clutch elements. Associated with at least two clutch elements is an elastically deformable clutch element working mechanism through which the corresponding clutch elements can be acted upon in direction away from one another by an axial force to assist disengagement of the drive-side and output-side clutch elements. The clutch element working mechanism provides a considerable change in the gradient of the axial force exerted on the clutch elements as a result of even a small change of shape of the clutch element working mechanism so that a sharply rising axial force of the clutch element working mechanism works against the clutch piston.

Abstract: A multi-plate clutch for coupling a drive shaft of a motor vehicle engine in a drive train having at least one transmission input shaft. The clutch includes a counter plate for introducing torque from the drive shaft and a clutch plate for conveying the torque to the transmission input shaft and having a first lining ring for torque transmission and a second lining ring that is movable axially relative to the first lining ring for torque transmission. A separator plate is movable axially relative to the counter plate and is positioned between the lining rings. A contact plate is movable axially relative to the counter plate by an actuating element to frictionally compress the clutch plate. The first lining ring is positioned between the contact plate and the separator plate in the axial direction, and the second lining ring is positioned between the separator plate and the counter plate.

Abstract: A friction plate for a clutch is provided. The friction plate includes a first core plate including at least one first radial extension, a second core plate including at least one second radial extension and friction material held axially between the at least one first radial extension and the at least one second radial extension. The at least one first radial extension and the at least one second radial extension are imbedded axially into opposite sides of the friction material and joined together. A method of forming a friction plate for a clutch is also provided.

Abstract: A clutch system may include in certain embodiments a clutch body attached to a drive member such as a drive pulley, wherein the clutch body may be removed from the drive member without disassembling the clutch body. In various embodiments, the clutch body may include two clutch plates which enclose a spring-loaded pneumatic reciprocating assembly that in operation causes the plates to selectively separate and engage one another. In certain embodiments, the clutch body may be readily attached to a associated drive pulley in a single step by installation of a single set of fasteners.

Abstract: A one-way clutch, including an inner race and a wedge component with first and second tapered outer partially circumferential surfaces. The clutch includes first and second outer races including respective tapered inner partially circumferential surfaces. For rotation of the outer races, with respect to the inner race, in a first direction, the outer races are axially aligned and separated by a space in an axial direction, the first and second tapered outer partially circumferential surfaces and the respective tapered inner partially circumferential surfaces are at least partially aligned in radial and axial directions and are free of contact. For rotation of the outer races, with respect to the inner race, in a second direction, opposite the first direction, the first and second tapered outer partially circumferential surfaces contact the respective tapered inner partially circumferential surfaces and the first and second outer races are non-rotatably connected to the inner race.

Abstract: A spring pack for a transmission includes first rotatable piston and a second rotatable piston. The first rotatable piston includes a first retainer plate, and the second rotatable piston includes a second retainer plate. The spring pack further includes a tabbed retainer plate that is stationary with respect to the first piston and the second piston and also includes a set of biasing members with a first subset of biasing members and a second subset of biasing members. The first subset of biasing members is disposed between the first retainer plate and the tabbed retainer plate, and the second subset of biasing members is disposed between the second retainer plate and the tabbed retainer plate. As the first and second pistons are activated, they stroke independently of each other as each retainer plate compresses its respective subset of biasing members against the tabbed retainer plate.

Abstract: A multi-disk shifting element of a motor vehicle transmission, which includes a plurality of outer disks (2) and a plurality of lining disks (1) which, when viewed axially, are arranged in alternation one after another. The outer disks include a number of flat outer disks (AL1) and a number of corrugated outer disks (AL2, AL3).

Abstract: A clutch assembly includes a plurality of reaction plates separated by one or more separator springs to maintain a distance between the reaction plates when the clutch is not activated.

Abstract: A multiplate clutch assembly for use in an automotive powertrain is provided that includes a first member, a second member, a plurality of first clutch plates attached to the first member, and a plurality of second clutch plates attached to the second member. The first and second clutch plates are disposed alternatively with one another. At least two of the first clutch plates have separator portions that are configured to contact each other and provide a separation force therebetween. A clutch plate is also provided that includes an annular main body portion defining an aperature therethrough and defining and outer edge and an inner edge. Separator teeth extend from a tooth edge, the tooth edge being one of the inner and outer edges of the main body portion. Each separator tooth is bent at an acute angle with respect to the main body portion.

Abstract: A multiple plate friction clutch includes clutch plates or discs having reduced frictional (spin) losses and thus reduced heat generation and improved service life. The clutch plates include both leaf springs or spring tabs at the periphery of the clutch plate that axially bias adjacent plates away from one another and a reduced area of friction material that contacts an adjacent reaction plate. On a typical motor vehicle automatic transmission clutch, a total of six or eight leaf springs or tabs are utilized: with three or four offset to one side and three or four offset to the other side.

Abstract: A floating-disk type brake system that includes floating disk assemblies placed respectively in spaces between a rotating member, such as a wheel of a transportation machine or a rotating shaft of a machine tool, and a stationary member to reduce differences in the rotating speed of adjacent sliding surfaces of the floating disk assemblies in frictional sliding engagement. The floating-disk type brake system includes a first floating disk assembly and a first disk assembly that are arranged between the ring gear and the planet carrier of a planetary gear built in a transmission or the like, and the first floating disk assembly and the first disk assembly are pressed together into frictional engagement to brake a rotating shaft.

Abstract: If it is determined that a D range is in use and determined that a vehicle is stopped, neutral control means (25) commands and controls an engagement pressure of a clutch (C-1) so as to achieve a state in which a piston of the clutch (C-1) contacts a clutch drum by a biasing force of a spring, and a state in which oil fills an oil passage from a linear solenoid valve (SLC1) to a hydraulic oil chamber and fills the hydraulic oil chamber. There is thus no drag loss in the clutch (C-1) during a neutral control, and the same fuel economy as when, for example, a manual shift to the neutral range is made can be achieved during the neutral control.

Abstract: A multi-disc brake, in particular for a road vehicle, includes parallel plates which are arranged at a distance from one another and which are rotationally stable and between which a rotatable brake disc is positioned. The radially extending plates and the brake discs can be pressed against one another during braking while overcoming a clearance and once the brake is released, the discs are separated from each other thus forming a clearance. The brake discs are pressed individually in the non-brake position by axially working restoring springs and/or in groups counter to an axially stationary stop, which stop can be rotated with the brake discs.

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 multi-plate clutch is provided to couple a drive shaft from a gas turbine engine with a driven shaft of a lift fan. When disengaged the plates of the clutch can be physically separated. Plates of one shaft are coupled to the shaft with individual energy members that return the plates to a disengaged position. The plates of the other shaft can be coupled together with a travel member and/or lug key and energy devices between at least some of the plates.

Abstract: A multiplate clutch assembly for use in an automotive powertrain is provided that includes a first member, a second member, a plurality of first clutch plates attached to the first member, and a plurality of second clutch plates attached to the second member. The first and second clutch plates are disposed alternatively with one another. At least two of the first clutch plates have separator portions that are configured to contact each other and provide a separation force therebetween. A clutch plate is also provided that includes an annular main body portion defining an aperature therethrough and defining and outer edge and an inner edge. Separator teeth extend from a tooth edge, the tooth edge being one of the inner and outer edges of the main body portion. Each separator tooth is bent at an acute angle with respect to the main body portion.

Abstract: A clutch assembly includes a plurality of reaction plates separated by one or more separator springs to maintain a distance between the reaction plates when the clutch is not activated.

Abstract: A clutch assembly includes a plurality of reaction plates separated by one or more separator springs to maintain a distance between the reaction plates when the clutch is not activated.

Abstract: According to some preferred embodiments, a clutch housing (46) of a clutch (2) has a bottom portion (46a) in a closed-end cylindrical shape, a plurality of arms (46d) extending along an axial direction from the bottom portion (46a) and provided along a circumferential direction centering on an axial center (C) of the clutch shaft (33), and a plurality of gaps (46e) formed between adjacent arms (46d). Off-springs (71) are arranged in the gaps and extend along the axial direction.

Abstract: A torque transmitting apparatus may include a cover portion generally defined by a first axis, and a flywheel coupled to the cover portion for rotation therewith. A pressure plate may be coupled to the cover portion for rotation therewith and be axially moveable relative to the cover portion. An intermediate plate may be coupled to the cover portion for rotation therewith. The intermediate plate is axially moveable relative to the cover portion and the pressure plate. A first clutch disk may be at least partially interposed between the pressure plate and the intermediate plate, and a second clutch disk may be at least partially interposed between the flywheel and the intermediate plate. The apparatus may include an axially acting biasing element for exerting an axial force between the pressure plate and the intermediate plate, and a support member extending through the biasing element.

Abstract: A torque transmitting apparatus includes a cover portion generally defined by a first axis, and a flywheel coupled to the cover portion for rotation therewith. The flywheel is restrained from axial movement relative to the cover portion. The apparatus also includes a pressure plate coupled to the cover portion for rotation therewith, wherein the pressure plate is axially moveable relative to the cover portion. The apparatus also includes an intermediate plate coupled to the cover portion for rotation therewith. The intermediate plate is axially moveable relative to the cover portion and the pressure plate.

Abstract: A pressure-regulated friction clutch is provided including a cylinder-piston unit, operated by a pressure medium, which permits a frictional connection of an output shaft with a driven plate fixed thereto and an input shaft with a driving plate fixed thereto, for the transmission of a torque from the input shaft with a permanently pressurized cylinder-piston unit.

Abstract: A disc clutch assembly is provided that includes first and second sets of generally annular plates spaced alternately with one another. The plates of the first set have a friction interface. The first and second sets of plates are selectively engagable with one another at the friction interface for transferring torque loads. Separating devices are in contact with the plates radially inward of the friction interface. The separating devices are configured to bias the respective ones of the first and second sets of plates apart from one another when not selectively engaged.

Abstract: A multi-disk clutch having a plurality of interengaging disks movable along a longitudinal clutch axis and a resetting device for the mutual release of adjacent disks along a release distance, with the release distance being bounded by an abutment device. The abutment device includes at least one contact section of a clutch part movable along the longitudinal clutch axis and at least one contact section of an axially fixed clutch part, with the moving clutch part and the axially fixed clutch part having different thermal coefficients of expansion and with the contact sections at both sides cooperating such that the bounding of the release distance varies in dependence on the temperature, with at least one of the contact sections having a sloping surface.

Abstract: The present invention relates to a multi-disc clutch for the transfer of torque between a first clutch part and a second clutch part, having at least one first and at least one second disc that engage one another and that are movable parallel to a rotational axis of the multi-disc clutch, and having a reset device for the reciprocal ventilation of adjacent discs. The first clutch part is connected in a rotationally secure fashion to the first disc and the second clutch part is connected in a rotationally secure fashion to the second disc. The reset device has at least two reset elements that are disposed eccentrically relative to the rotational axis and distributed in the circumferential direction.

Abstract: A transmitting apparatus includes a disengaging device that disengages a driving force from a front-wheel differential device to a first driving-force transmitting direction converting unit 20 and a multi-plate clutch mechanism provided between an output of a rear-wheel differential device and a right-rear wheel and capable of successively adjusting a fastening force. Drag torque when the fastening of the multi-plate clutch mechanism is released is set smaller than friction torque of a rear-wheel drive system between the first driving-force transmitting direction converting unit and a second driving-force transmitting direction converting unit. A controller unconnects the disengaging device and releases the fastening of multi-plate clutch mechanism when switching to a two-wheel drive mode, thereby stopping the rotation of the rear-wheel drive system.

Abstract: A clutch spring kit that is particularly suited to replacing a standard motorcycle pressure plate in a diaphragm spring biased clutch assembly. The clutch assembly is activated by centrifugal force acting on spherical deflection elements. A plurality of pocket elements are generally arranged in an annular array formed in the spring side of a clutch pressure plate. The pocket elements are generally disposed radially inwardly of and adjacent to an upstanding lip element on the first side of the pressure plate. The pocket elements include ramps that extend within the pocket elements generally outwardly toward the lip element and angularly upwardly towards the spring side. A spherical deflection element, such as a ball bearing, is received in each of the pocket elements for generally radial movement along the ramp. A diaphragm spring, the periphery of which is confined by the lip element, is in spring biasing association with the first side of the pressure plate.

Abstract: A pressure plate arrangement for a friction clutch includes a housing rotatably fixed to an abutment arrangement for joint rotation about an axis of rotation and a plate arrangement with at least one intermediate plate and a pressure plate. At least one of the intermediate and pressure plates is mounted in the housing and axially movable relative thereto and rotateable about the axis of rotation. An energy storage device coupled to the housing generates an elastic restoring force on the plate arrangement. A releasing spring arrangement located between the housing and plate arrangement is tensioned to generate an elastic restoring force on the pressure plate in a second direction opposite to the first direction. A clutch disk arrangement is clamped between the abutment arrangement and the at least one intermediate plate, or between any two plates of the plate arrangement.

Abstract: A disc clutch assembly is provided that includes first and second sets of generally annular plates spaced alternately with one another. The plates of the first set have a friction interface. The first and second sets of plates are selectively engagable with one another at the friction interface for transferring torque loads. Separating devices are in contact with the plates radially inward of the friction interface. The separating devices are configured to bias the respective ones of the first and second sets of plates apart from one another when not selectively engaged.

Abstract: A transmission housing for an automatic transmission that includes a first and second plurality of circumferentially spaced inwardly extending sets of protrusions connected to an inner surface of the transmission housing configured to engage clutch assemblies of a planetary transmission. The sets of protrusions are offset from each other.

Abstract: A multiple-disk clutch used in the power train of a motor vehicle for transmitting power from the crankshaft of an engine to a transmission input shaft is disclosed. The multiple-disk clutch comprises an actuation system supported at least in part by one of the inner and outer clutch member, and connected to a pressure member. The multiple-disk clutch is positioned within the multiple-disk clutch. The actuation system is adapted to overcome the biasing force of a spring or springs and release the compression force exerted by the pressure member on the driving and the driven friction disks such that the friction disks are spaced apart and power transmission through the multiple-disk clutch is interrupted.

Abstract: The invention provides a clutch assembly including a drive shaft; a torque transmission member co-axially mounted to the drive shaft; a clutch member operably connected to or integral with the torque transmission member, the clutch member having a first friction face; a disc spring mounted around the drive shaft and having a second friction face engaging the first friction face; a resilient retainer retaining the spring in a compressed condition in which the first and second friction faces are compressed together to allow torque transmission, wherein the retainer includes a fractured ring having first and second ends resulting from the fracture, the ends adjacent and biased towards each other.

Abstract: Wet clutch (1), in particular DCT clutch, comprising: at least one clutch pack (2, 3) including: a plurality of steel plates (4, 5), and a plurality of friction plates (6, 7) being disposed between the steel plates (4, 5); and at least one clutch piston (8, 9) acting on the clutch pack (2, 3), wherein disc springs (10, 11) are disposed between the steel plates (4, 5).

Abstract: A friction clutch is configured with a pressure plate arrangement having: a housing rotatably fixed to an abutment arrangement for joint rotation about an axis of rotation; a plate arrangement having at least one intermediate plate and a pressure plate, at least one of the intermediate and pressure plates being mounted in the housing and operative to axially move relative thereto and to rotate about the axis of rotation; an energy storage device coupled to the housing and operative to generate a elastic restoring force exerted on the plate arrangement, the energy storage device being coupled to the pressure plate; a releasing spring arrangement located between the housing and plate arrangement and coupled thereto, the releasing spring arrangement being tensioned to generate an elastic restoring force exerted at least on the pressure plate in a second direction opposite to the first direction in response to the elastic restoring force; and a clutch disk arrangement clamped between the abutment arrangement and

Abstract: A hydrodynamic clutch device includes a clutch housing connected to a drive, a pump wheel connected to the clutch housing, and a turbine wheel connected to a takeoff, the turbine wheel and the pump wheel forming a hydrodynamic circuit. A bridging clutch which is essentially surrounded by the hydrodynamic circuit includes a piston and a friction surface which can be acted on by the piston to connect the drive to the takeoff independently of the hydrodynamic circuit, the piston having one surface facing a pressure space and an opposite surface facing the hydrodynamic circuit. A pressure circuit includes a first pressure medium line to supply the hydrodynamic circuit with clutch fluid and a second pressure medium line to supply the pressure space with clutch fluid. A seal at least reduces the exchange of fluid between the hydrodynamic circuit and the pressure space, and a throttle allows a defined exchange of fluid between the hydrodynamic circuit and the pressure space.

Abstract: A hydrodynamic clutch device includes a clutch housing connected to a drive, a pump wheel connected to the clutch housing, and a turbine wheel connected to a takeoff, the turbine wheel and the pump wheel forming a hydrodynamic circuit. A bridging clutch which is essentially surrounded by the hydrodynamic circuit includes a piston and at least one friction surface which can be acted on by the piston to connect the drive to the takeoff independently of the hydrodynamic circuit, the piston having one surface facing the hydrodynamic circuit and an opposite surface facing a pressure space. A pressure circuit includes a first pressure medium line to supply the hydrodynamic circuit with clutch fluid and a second pressure medium line to supply the pressure space with clutch fluid. A seal at least reduces the exchange of fluid between the hydrodynamic circuit and the pressure space, and a throttle allows a defined exchange of fluid between the hydrodynamic circuit and the pressure space.

Abstract: A lockup device 5 includes a damper mechanism 7, a plate 56, a plate 57, a piston 51, and a plate 59. The damper mechanism 7 has a plate 52 rotating together with the turbine 10, and plates 53 and 54 rotatable with respect to the plate 52. The plate 56 is unrotatable and axially movable with respect to the plates 53 and 54. The plate 57 is unrotatable and axially movable with respect to the front cover 2, and is arranged on the turbine side of the plate 52. The piston 51 is arranged on the turbine side of the plate 56, and is elastically and unrotatably coupled in an axial direction to the plates 53 and 54 through the plate 59.

Abstract: A housing arrangement can be connected to a flywheel for rotation in common around an axis of rotation, and a pressure element is connected to the housing arrangement for rotation in common around the axis of rotation but is able to shift in the axial direction. A release spring arrangement includes at least one spring element which acts on the pressure element and is supported against the flywheel after the housing arrangement has been attached to the flywheel. Each spring element is held in place on the pressure element by means of a fastening element.

Abstract: A clutch assembly includes a clutch cover which can be secured to a flywheel; an intermediate plate spaced from the flywheel; a pressure plate arranged between the clutch cover and the intermediate plate and secured to the clutch cover by resilient straps which urge the pressure plate from an engaged position to a disengaged position; a first friction disk arranged between the pressure plate and the intermediate plate; and a second friction disk arranged between the intermediate plate and the flywheel. Linkage urges the intermediate plate toward the pressure plate so that the second friction disk can be fully disengaged from the flywheel when the pressure plate is retracted during disengagement.

Abstract: A disk-packet unit comprising a pre-tensioned disk packet for mounting on guide elements in a transmission component. The packet comprises at least two adjacent elements that form frictional surfaces, which can be intercoupled in a frictional engagement by means of an intermediate element that forms a frictional surface and comprises an auxiliary mounting device. At least one spring device is located between at least two adjacent elements that form frictional surfaces. The auxiliary mounting device comprises a sleeve element and a tensioning device. The elements that form frictional surfaces are carried on the sleeve element and the latter comprises a stop. The tensioning device can be detachably connected to the sleeve element and produces a force for pre-tensioning the disk packet.

Abstract: A piston coupling mechanism in a lockup device having a piston that presses the friction coupling part of a clutch mechanism against the front cover of a fluid-type torque transmission device is provided reduce the amount of work required for assembly. The piston coupling mechanism 76 of the lockup device 7 functions to couple the piston 75 to the front cover 11 such that it rotate integrally with the front cover 11 while being movable in the axial direction. The piston coupling mechanism 76 has a piston lug plate 83, a cover lug plate 84, and a return plate 85. The piston lug plate 83 and the cover lug plate 84 mate in such a manner that they can move in the axial direction but cannot rotate relative to each other. The return plate 85 can apply an axial force against the piston 75 directed toward the transmission and can also limit the axial movement of the piston 75 toward the transmission.

Abstract: A clutch assembly is provided that includes a flywheel. A clutch cover is secured to the flywheel. An intermediate plate is spaced from the flywheel, and a pressure plate is arranged between the clutch cover and the intermediate plate. The intermediate plate may be secured to the clutch cover by flexible straps or another similar device. The straps retract the pressure plate from an engaged position to a disengaged position. First and second friction discs are respectively arranged between the pressure plate and the intermediate plate and the intermediate plate and the flywheel. The pressure plate forces the intermediate plate and the friction discs toward the flywheel to couple and engine and transmission together. A separator moves the intermediate plate with the pressure plate from the engaged position to the disengaged position thereby permitting self-disengagement of the friction discs from the flywheel.

Abstract: A friction clutch is provided that includes a clutch cover, an intermediate plate that is spaced apart from an engine flywheel, a first friction disk positioned between the flywheel and the intermediate plate, a pressure plate spaced apart from the intermediate plate and a second friction disk positioned between the intermediate plate and the pressure plate. The clutch further includes a first drive strap for applying a load to the intermediate plate, a second drive strap for applying a load to the pressure plate and a separator arm attached to the intermediate plate. The separator arm engages the second drive strap such that axial movement of the intermediate plate relative to the clutch cover is a fraction of the corresponding axial movement of the pressure plate during engagement and disengagement of the clutch.

Abstract: The invention relates to a disc-packet unit (1) comprising a pre-tensioned disc packet (2) for mounting on guide elements in a transmission component. Said packet comprises at least two adjacent elements (4.1) that form frictional surfaces, which can be intercoupled in a frictional engagement by means of an intermediate element (5.1) that forms a frictional surface and comprises an auxiliary mounting device (3). Said packet comprises at least one spring device (6.1) located between at least two adjacent elements that form frictional surfaces. The auxiliary mounting device comprises at least one sleeve element (7) and a tensioning device (9). The elements (4) that form frictional surfaces are carried on the sleeve element (7) and the latter comprises a stop (8). The tensioning device (9) can be detachably connected to the sleeve element (7) and produces a force for pre-tensioning the disc packet, in such a way that friction is generated between the elements that form frictional surfaces (4.

Abstract: A housing arrangement can be connected to a flywheel for rotation in common around an axis of rotation, and a pressure element is connected to the housing arrangement for rotation in common around the axis of rotation but is able to shift in the axial direction. A release spring arrangement includes at least one spring element which acts on the pressure element and is supported against the flywheel after the housing arrangement has been attached to the flywheel. Each spring element is held in place on the pressure element by means of a fastening element.

Abstract: A multiple plate clutch device is provided to conserve space. In a reverse hydraulic brake device 7, a plurality of teeth 35 is formed next to one another in a circumferential direction in an inner peripheral surface portion 31 of a transmission case 21. A plurality of first brake plates 24 includes engagement teeth 41, 42. The engagement teeth 41, 42 engage the plurality of teeth 35 on the inner peripheral surface portion 31 such that the plurality of first brake plates 24 is axially movable and non-rotatable relative to the inner peripheral surface 31. A plurality of second brake plates 25 is disposed to alternate axially with the plurality of first brake plates 24. A piston 22 pushes the plates 24 and 25. Return springs 28 are disposed within deep grooves 37 that are between the teeth 35 and the inner peripheral surface portion 31. The return springs 28 urge the first plate 29 that is closest the piston 22 towards the piston 22.