Abstract: A decoupling isolator comprising a pulley, a hub member comprising a stop, a flat wire spiral spring having an end fixedly connected to the pulley, the flat wire spiral spring having another end engageable with the stop to limit a rotation of the pulley.

Abstract: The invention relates to a torque transmitting device having a hub arranged in the drive train of a motor vehicle for transmitting torque between a drive unit and a transmission, in particular a turbine wheel hub of a turbine wheel of a torque converter which is coupled to a damper hub with a rotational vibration damper connected in between via a driving plate, in particular of a converter bridge coupling. The invention is operatively arranged such that the rotational vibration damper is equipped with a mechanical stop mechanism that is in effect as soon as a maximum design load on the rotational vibration damper has been exceeded.

Abstract: A torque converter with a casing, a turbine, and a piston having a first friction surface located at a radially outer portion of the piston, and a first drive ring having second and third friction surfaces. The piston is displaceable to engage the first and second friction surfaces. The torque converter also includes a second drive ring having fourth and fifth friction surfaces. The first drive ring is displaceable to engage the third and fourth friction surfaces. The second drive ring is driveably connected to the piston and to an elastic member of a damper. The torque converter includes a sixth friction surface for the casing. The second drive ring is displaceable to engage the fifth and sixth friction surfaces, the first drive ring and the casing are nonreleasably connected, and the first drive ring is axially displaceable with respect to the casing.

Abstract: A torsional vibration damper for a bridging clutch of a hydrodynamic clutch arrangement is provided with a drive-side transmission element and a takeoff-side transmission element, which can be deflected around a certain angle of rotation relative to the drive-side element against the action of energy storage devices, where at least one driver element with an actuating function is assigned to each energy storage device. To realize a multi-stage action of the energy storage device, at least some of these driver elements arrive in working connection with an assigned final turn of the corresponding energy storage device only after using up a predetermined clearance gap in the circumferential direction. For this purpose, at least one transmission element has openings to accommodate energy storage devices, and at least one circumferential boundary of each opening is provided as a driver element for the assigned energy storage device.

Abstract: A hydrokinetic coupling device is intended, in particular, for a motor vehicle. The hydrokinetic coupling device comprises a casing rotationally connecting a driving shaft and an impeller wheel, a turbine wheel fixed to a turbine hub rotationally connected to a driven shaft, a clutch locking the coupling of the driving and driven shafts, and a damping element comprising elastic washers for restricting the essentially-radial circulation of the fluid at least inside a front axial space which is located between a front guide washer and a web, such that the fluid circulates though the lockup clutch of the device.

Abstract: A clutch for effectively prevents a clutch outer from tilting at the time when torque is varied. The clutch includes damper springs for transmitting, to a clutch outer, torque inputted to a driven gear, and a thrust washer for regulating positional change of a position of the clutch outer with respect to the driven gear in a direction of the shaft axis. The thrust washer is disposed between the driven gear and the clutch outer in an axial direction. The thrust washer is disposed only outward of the damper springs in a radial direction.

Abstract: A clutch disk arrangement for a multi-disk clutch has a hub rotatable about an axis of rotation and a plurality of friction lining assemblies connected to the hub by a torsional vibration damper arrangement. The torsional vibration damper arrangement includes a central disk element on the hub and a cover disk element on each side of the central element, where the cover disk elements are permanently connected to each other and are connected by a damper element arrangement to the central disk element for transmitting torque. A driver formation is provided on at least one of the cover disk elements and an opposing driver formation is arranged on at least one of the friction lining assemblies. The driver formation engages the opposing driver formation so that the at least one of the friction lining assemblies is fixed with respect to rotation and is axially displaceable.

Abstract: The invention relates to a hydrokinetic coupling device (10) characterized by the fact that the web (74) comprises, at the inner radial end thereof, a collar (86), which axially extends toward the front between the turbine wheel (32) and the turbine hub (40) and which is rotationally joined by friction welding respectively: at the front, to the turbine wheel (32) by a first weld joint (88) provided between a front annular contact face (90) of the collar (86) and a rear welding face (92) opposite the inner radial periphery of the turbine wheel (32) and; at the rear, to the turbine hub (40) by a second rear weld joint (96) provided between a rear annular contact face (98) of the collar (86) and a front welding face (100) opposite the outer radial periphery of the turbine hub (40).

Abstract: A torque damper can comprise a clutch piston arranged within a cover of a torque converter and can be adapted to be moved between a connected position and a non-connected position relative to the cover. Damper springs can be arranged along the circumference of the clutch piston. Connecting members can be arranged abutting against one end of the damper spring and adapted to connect a turbine arranged within the cover and the clutch piston via the damper spring. Damper holders can be arranged abutting against the other end of the damper spring and adapted to hold the damper spring against the compressive force applied to the damper spring from the connecting member. Guide sheets having wear resistance can be interposed between the circumference of the clutch piston and the damper spring and can be adapted to guide the damper spring. A torque input to the cover can be transmitted to the turbine via the clutch piston and the damper springs when the clutch piston is in the connected position.

Abstract: A vibration damper including a first spline having a plurality of first teeth, a second spline having a plurality of second teeth, a third spline having a plurality of third teeth and at least one spring interconnected between the first and second splines, wherein the plurality of third teeth are intermediate the plurality of first teeth and the plurality of second teeth, and the at least one spring biases the plurality of first teeth and the plurality of second teeth against the plurality of third teeth.

Abstract: A hub for a clutch disk arrangement having a friction lining unit with a radially inner set of teeth, the hub including a hub element which can be connected non-rotatably to a shaft; a torque-transmitting arrangement connected to the hub element and having a radially outer set of teeth; and a ring-shaped connecting element made of sheet metal and having a plurality of axially extending tabs and a plurality of openings between the tabs. The outer teeth of the torque transmitting arrangement and the inner teeth of the friction lining unit engage in the openings so that torque can be transmitted from the friction lining element to the hub. The connecting element is preferably fixed to the torsional vibration damper and the inner teeth are preferably axially moveable in the openings so that the friction lining unit can move axially with respect to other friction lining units in a multi-disk clutch.

Abstract: A first dog clutch member is coupled with a rotation transmitting member rotatably mounted on a power transmission shaft with a relative rotation clearance ?. A second dog clutch member is slidably mounted on the power transmission shaft to be engageable/disengageable with/from the first dog clutch member. A damper spring is interposed between the rotation transmitting member and the first dog clutch member. First dog teeth and second dog teeth, which are engaged/disengaged with/from each other by an axial displacement of the second dog clutch member, are formed in the first dog clutch member and the second dog clutch member, respectively. A chamfer is made in each end portion of the respective first dog teeth and each end portion of the respective second dog teeth, which are opposed to each other, so as to guide the second dog teeth to a position to engage with the first dog teeth.

Abstract: A dual clutch engine coupling damper includes a slipping ECCC clutch in series with a plurality of damper springs, and a bypass clutch in parallel with the damper springs. The ECCC is adapted for use when the vehicle engine is running and the bypass clutch is adapted for use when the vehicle engine is being started. The dual clutch engine coupling damper incorporates a single pressure plate design adapted to actuate both the ECCC clutch and the bypass clutch. The single pressure plate design is compact and minimizes axial space requirements for the apparatus. Additionally, the components of the present invention are primarily stamped parts which may be produced in an inexpensive and efficient manner.

Abstract: In a damper apparatus including springs, a holder for holding the springs, and a plate having pawls engaged by the springs, splines are provided on an inner peripheral portion and an outer peripheral portion of the damper apparatus.

Abstract: A combination mounting ring of resilient material, for connecting a shaft within a bore of a housing, has a hollow cylindrical part having radially extending projections. This part is for locating between the outer surface of the shaft and the inner surface of the bore, the radially extending projections being under compression and thus securing the shaft within the bore. The combination mounting ring further has an axial spring element extending radially inward from the cylindrical part and having two portions at different axial positions. The axial spring element is for locating between the shaft and a body axially displaced from the shaft, and serves to minimize axial movement of the shaft within the bore of the housing. The axial spring element may either be an annular part or a tab extending from an axial edge of the cylindrical part.

Abstract: In a fluid transmitting device, a plurality of first power transmission claws are inserted between adjacent ones of damper springs and secure to a clutch piston; and a plurality of second power transmission claws are inserted between adjacent ones of the damper springs so as to face the first power transmission claws, and has support portions which are connected to an outer peripheral surface of a shell of a turbine impeller via a weld formed by laser beams. The weld is formed into a linear shape extending along a circumferential direction of the shell so that the weld is melt by the laser beams to extend from an outer surface of the support portion to an inner peripheral surface of the shell. Thus, it is possible to easily perform welding between the support portions of the second power transmission claws and the shell of the turbine impeller, and to easily perform a visual inspection as to whether the welding condition is good or not.

Abstract: A torque transmitting unit in the power train of a motor vehicle for transmitting torque between a drive unit having an output shaft and a transmission having at least one input shaft. At least one clutch unit is positioned between the drive unit and the transmission, and at least one vibration damping unit having an input part and an output part is provided and is connected between the drive unit output shaft and the clutch unit. The clutch unit includes a clutch cover that defines a clutch-containing volume and that is supported by a transmission housing section. The vibration damping unit is positioned with in the clutch-containing volume defined by the clutch cover. For optimization of structural space, both the input part and the output part of the vibration damping unit are supported in the radial direction by the clutch cover.

Abstract: A torque converter with a rotary oscillation damper has two or more rotary damper components that are rotatable in relation to each other. A friction-reducing component is arranged between the rotary damper components.

Abstract: The present invention broadly includes a hub assembly for a torque converter having a hub arranged to rotationally connect to a transmission input shaft and includes first and second radial surfaces, a first plate rotationally connected to a turbine, rotationally connected to the hub, and fixed in a first axial direction by the first surface and a second plate rotationally connected to the first plate and fixed in a second axial direction, opposite the first direction, by the second surface. The hub assembly may include a hub having at least one radially disposed protrusion, the protrusion includes the second radial surface, and the first plate is rotationally connected to the protrusion. The hub may further include a body with a first diameter and the protrusion with a second diameter greater than the first diameter. The first and second radial surfaces may be arranged to axially fix a turbine with respect to the hub, or the first and second radial surfaces may be coplanar.

Abstract: A torsional vibration damper for a lockup clutch of a hydrodynamic clutch arrangement is provided with a drive-side transmission element and a driven-side transmission element which can deflect around a rotational angle relative to each other against the action of energy accumulators. The transmission elements have recesses for receiving an energy accumulator, respectively, which can be supported by its respective end coils at respective circumferential ends of the recess. The circumferential ends of every recess are oriented, respectively, substantially along a first connection line to a first center of curvature. However, the circumferential end coils of every energy accumulator are oriented substantially along a second connection line to a second center of curvature in the absence of a relative rotational deflection of the transmission elements. The second connection line is oriented at an initial set angle relative to the first connection line.

Abstract: A start-up clutch and torsional-vibration damper assembly including a disk clutch having an outer disk carrier and an inner disk carrier, and a torsional vibration damper having a primary element, a secondary element, and a spring dampening mechanism. The spring dampening mechanism is disposed between and operatively couples the primary element and the secondary element. The torsional vibration damper connected in series to the disk clutch such that the torsional vibration damper and the disk clutch are juxtaposed to each other along a common axis with the primary element having substantially the same outside radius as the outer disk carrier.

Abstract: The present invention broadly comprises a clutch housing with a housing wall disposed radially about a longitudinal axis for the housing and at least one opening in the housing wall operatively arranged to accept at least a portion of a clutch plate for a clutch assembly. The housing is substantially cylindrical and in some aspects the openings are slots substantially parallel to the axis. In some aspects, the housing wall further comprises an end and the at least one slot has an open end proximate the end or the housing wall further comprises a radial off-set proximate the end. In some aspects, the clutch housing is an inner housing or an outer housing for the clutch assembly.

Abstract: A torsional vibration damper includes a primary mass defining a ring-shaped chamber, a secondary mass relatively rotatably connected to the primary mass, and a damping unit for coupling the primary and secondary masses to each other in a rotationally elastic manner. The damping unit comprises a plurality of coil springs, a pair of end guides, and a friction member slidably disposed between neighboring coil springs. The friction member is configured to be rubbed against at least one of an inner wall and an outer wall of the ring-shaped chamber in response to compressions of the coil springs such that a friction force is generated in proportion to a relative rotation between the primary and secondary masses as well as to a rotational speed thereof.

Abstract: The present invention relates to a torsional damper for an electrically-variable transmission. The torsional damper is equipped with a hydraulically actuable lock-out clutch to directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically-variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. When the engine is off and the torsional damper assembly is in use, an auxiliary pump is provided to pump oil to the torsional damper assembly. The lock-out clutch is hydraulically balanced by the oil supplied by the auxiliary pump. The pump is strategically mounted to the transmission housing in a manner to minimize the distance between the auxiliary pump and the transmission without affecting any vehicle ground clearance requirements.

Abstract: A transmission apparatus is disclosed which can improve the locking response speed of a lockup clutch when an engine is driven by the output side, without largely changing the structure of the lockup clutch or the like. In the lockup clutch of this transmission apparatus, fixing portions (21a) for a support member (24) of a damper spring (23) are fixed to a plurality of portions on a predetermined circumference of a piston (21) which are inside a friction member (22). Projections (21b) extending in the radial direction are formed, at those positions of the lockup piston (21) which are inside the friction member (22) and sandwiched by the fixing portions (21a) for the support member (24) of the damper spring (23), to project toward a front cover.

Abstract: The present invention relates to a torsional damper for an electrically-variable transmission. The torsional damper is equipped with a lock-out clutch to directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically-variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. The present invention also includes damper springs of variable rates to effectively attenuate distinctive or inconsistent torque fluctuations when the engine is operating in displacement-on-demand mode.

Abstract: The present invention relates to a torsional damper for an electrically variable transmission. The torsional damper is equipped with a hydraulically actuable lock-out clutch to selectively directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. During higher speeds the centrifugal loading placed on oil in the torsional damper increases, which may cause the lock-out clutch to inappropriately engage. The present invention hydraulically balances the hydraulic actuator (or piston) driving the lock-out clutch to appropriately regulate lock-out clutch engagement.

Abstract: A torsional vibration damping device (1), in particular for a motor vehicle clutch, said device comprising a disc (60) and a support (80) mounted mobile in rotation relative to each other about a common main axis, and linked in rotation via circumferential elastic members (90) damping torsional vibrations, said elastic members being interposed between the disc (60) and the support (80) and maintained in position circumferentially via lugs (65) of the disc (60) and lugs (82,84) of the support (80) whereon are supported the elastic members (90) and radially via a guide ring (100) passing through the elastic members (90) and integral with the disc (60). Said device is characterised in that the lugs (82,84) of the support (80) are mounted on either side of a section of the ring (100) and the lugs (65) of the disc (60) can move freely at the angle between the lugs (82,84) of the support (80).

Abstract: A coupling apparatus for a motor vehicle, including a hub designed to link in rotation an output shaft and a turbine wheel a clutch for locking the coupling between the input shaft and output shaft. A locking piston is axially mobile between a wall integral with the turbine wheel and a wall for locking a crankcase designed rotatable link the input shaft and an impeller wheel. A female member of sealing mechanism, linked to the piston axially about a male member of the sealing mechanism, linked to the hub. A damping mechanism is clamped between the piston and the wall and an output member linked to the hub. The male member and the damping output member are each mounted on the hub or born by a member mounted on the hub.

Abstract: A hydrodynamic torque transmitting device is disclosed that overcomes problems created by the presence of a thrust washer therein. In a torque converter 1 according to the present invention, a piston 41 is disposed between a front cover 2 and a turbine 4 to form a front chamber F on a front cover side and a rear chamber R on a turbine side, and can move toward and away from the front cover 2 by means of a hydraulic pressure differential created between the front and rear chambers F and R. The piston 41 has a disk shaped body 41a, and a frictional coupling portion (friction facing 61) disposed on a outer peripheral portion of the body 41a that serves to frictionally engage with the front cover 2. The turbine hub 23 and the front cover 2 have opposing portions (63, 23b) that oppose each other across an axial space. The piston 41 has a support portion 48 that axially supports the turbine 4 when the piston 41 moves to a position near the front cover.

Abstract: Apparatus for transmitting torque between the output shaft of the engine and the input shaft of the transmission in a motor vehicle has a fluid coupling with a housing secured to the output shaft and containing an impeller, a runner and, if necessary, a guide wheel. The runner is connected to a hub on the input shaft by a carrier for a torsionally elastic damper having coil springs which receive torque from the housing. The damper is in series with a clutch which can be operated to bypass the fluid coupling.

Abstract: A hydrokinetic torque converter, particularly for use in the power train of a motor vehicle, has a housing which can receive torque from the prime mover of the vehicle and drives a pump adapted to rotate a turbine on the input shaft of the change-speed transmission. The turbine can also receive torque from the housing by way of a bypass clutch and a damper borne by a hub which is mounted on the input shaft. A feature of the invention resides in the simplicity of design and low cost of several component parts of the torque converter and in a novel mode of assembling the component parts.

Abstract: A powertrain for transmitting torque between a power source and a transmission includes an output shaft driven by the power source, first and second input shafts, a housing, a first flywheel rotatably supported on the housing, a second flywheel rotatably supported on the output shaft and driveably connected to the first flywheel, a first clutch for driveably connecting and disconnecting the first flywheel and the first input shaft, and a second clutch for driveably connecting and disconnecting the second flywheel and the second input shaft.

Abstract: A torque converter which has a pump wheel, a turbine wheel, and a stator, which form a hydrodynamic circuit, and also a torsional vibration damper with a primary and a secondary damper element. The primary and the secondary damper element are connected to each other in a rotationally elastic manner by at least one set of springs. The turbine wheel has a turbine wheel shell and is supported rotatably with respect to a turbine wheel hub in a first bearing, which provides axial and radial support. The secondary damper element is mounted nonrotatably on the turbine wheel hub. The turbine wheel acts by way of an intermediate element on the primary damper element. The stator is mounted on a stator hub, which is supported by an axially operative second bearing on a turbine wheel base, which is connected to the turbine wheel shell. The first bearing is located radially outside the second bearing.

Abstract: A hydraulic torque converter, particularly for use in a motor vehicle between the prime mover and the transmission of the power train, employs a combination of a bypass clutch with one or more torsional vibration dampers which brings about savings in space and/or in the number of parts. In addition, the torque converter can stand long periods of use and is less prone to wear, adverse influences of abruptly developing stresses and/or other undesirable influences than conventional torque converters. Furthermore, the improved torque converter employs or can employ a bypass clutch and/or one or more torsional vibration dampers simpler and less expensive than but superior to those in conventional torque converters.

Abstract: A lockup device 7 is provided with a clutch mechanism, an elastic coupling mechanism, a piston 75, and a piston coupling mechanism 76. The piston coupling mechanism 76 has a piston pilot 78 and a return plate 79 and serves to couple the piston 75 and a front cover 11. The piston pilot 78 is fixed to the front cover 11 and supports the piston 75. The axially deformable return plate 79 is disposed between the front cover 11 and the piston 75. The elastic coupling mechanism is provided with a plurality of torsion springs 73, a spring holder 71, a driven plate 72, and a drive plate 74. A plurality of slit holes 71d each having a width that is larger than the width W1 of the first claw parts 72b are formed in the annular part 71a at positions corresponding to those of the first claw parts 72b.

Abstract: Hydrokinetic coupling apparatus with an axis of rotation X—X, in particular for motor vehicles, in which the connection without clearance between the turbine wheel, the turbine hub and the input element of the damping device is accomplished by axial rivets. Bearings (80) are axially interposed between turbine hub (14) and a hub of a reaction wheel (13).

Abstract: A bridging clutch is installed in a fluid medium-filled housing of a hydrodynamic coupling device located between a drive shaft and a transmission input shaft, the coupling device also containing a pump wheel and a turbine wheel. The bridging clutch is provided with a piston, which, when moved into a first axial position, brings at least one friction element into working connection with at least one friction surface, and when moved into a second axial position, at least partially releases this working connection, and with a torsional vibration damper, which is designed with at least one drive element and with at least one takeoff element, at least one of which has openings for circumferential springs and actuating areas for these springs. At least one of the takeoff elements acts a carrier element for the turbine wheel, which is held otherwise without radial support in the housing.

Abstract: A hub ring for use in a clutch disk includes an inner circumference which can engage a hub; and a pair of axially opposed front sides. At least one of the front sides has means for positively engaging a structural component arranged against the respective front side so that torque can be transmitted from the structural component to the hub.

Abstract: A torque converter includes a torque input member, a first torque transmitting member hydrodynamically transmitted with a torque from the torque input member and capable of outputting the torque to a torque output member, a clutch member engageable with the torque input member, a second torque transmitting member engageable with the clutch member, and an elastic member supported into engagement by the first torque transmitting member, capable of absorbing shock in the torque, and capable of transmitting the torque to the first torque transmitting member.

Abstract: A lockup device 7 having a dual friction surface to make it possible to arrange a friction coupling part on the outside with respect to the radial direction is provided. The lockup device 7 has a clutch plate 71, a drive plate 72, a driven plate 73, a plurality of torsion springs 74, a spring holder 80, a piston 75, and a piston coupling mechanism 76. The piston 75 radially extends to the position of a friction coupling part 71c of the clutch plate 71. The mounting radius of the torsion springs 74 is shorter than a radius extending to the radial position of the outer circumferential edge of the piston 75 or the friction coupling part 71c. The protrusions 72d of the drive plate 72 mate with the recessions 71e of the clutch plate 71 at a radial position that is farther from the rotational axis than mounting radius of the torsion springs 74.

Abstract: A driven disk in a clutch comprises a hub having a flange extending radially therefrom and having a spring cover affixed thereto. The spring cover defines at least one spring cavity therein and has two ends. Opposing first portions of the two ends define a first cavity length, and second opposing portions of the two ends define a second cavity length. A first spring is retained within the spring cavity wherein the first spring bears against the first end portions defining the first length. A second spring is also retained within the spring cavity wherein the second spring bears against the second end portions defining the second length.

Abstract: A lockup device 7 is provided with a plurality of friction surfaces to absorb and damp torsional vibrations to increase capacity. The lockup device 7 functions both as a clutch and as an elastic coupling mechanism. The lockup device 7 has a clutch plate 71, a drive plate 72, a driven plate 73, a plurality of torsion springs 74, a piston 75, and a piston coupling mechanism 76. The clutch plate 71 has a friction coupling part 71c and a cylindrical part 71b for bearing the centrifugal load of the torsion springs 74. The internal surface of the cylindrical part 71b of the clutch plate 71 bears the radially outward facing part of each torsion spring 74 directly. More specifically, the outward facing parts of the torsion springs 74 are born by increasing only the thickness of the cylindrical part 71b of the clutch plate 71.

Abstract: A hydrodynamic clutch device for a hydrodynamic torque converter includes a turbine wheel for rotation about an axis of rotation. The turbine wheel is connected by a lockup clutch arrangement for transmitting torque to a housing arrangement. The turbine wheel includes a turbine wheel shell for housing turbine wheel blades. The turbine wheel shell is operably connected by a torsional vibration damper arrangement for transmitting torque. The torsional vibration damper arrangement includes a first transmission element coupled with the lockup clutch arrangement and the turbine wheel shell and includes a second transmission element coupled with the first transmission element for transmitting torque by means of a damper element arrangement; and wherein the first transmission element is supported at the housing arrangement in a first direction by a bearing arrangement.

Abstract: A hydraulic clutch has an impeller wheel, a turbine wheel with a turbine wheel shell, a turbine torsional vibration damper and a lockup clutch. The turbine wheel shell receives a connection element with which it acts on the torsional vibration damper. The lockup clutch has at least one clutch disk arranged at a disk carrier. The turbine wheel shell is connected on the radial inner side with the connection element. The disk carrier passes into a holding clamp which is connected to the turbine wheel shell in a radially eccentric manner. The disk carrier is connected with the connection element so as to be fixed with respect to rotation relative to it.

Abstract: A hydrodynamic coupling device, in particular a torque converter or fluid clutch, comprises a housing assembly, a turbine wheel provided inside the housing assembly, and a torque converter lockup clutch assembly for establishing a torque transmission connection as desired between the turbine wheel and the housing assembly. The torque converter lockup clutch assembly comprises at least one essentially annular friction element, which is connected to the turbine wheel for mutually rotating about a rotational axis, and a pressing element which is connected to the housing assembly for mutually rotating about the rotational axis. The at least one friction element can be subjected to the action of the pressing element in order to establish the torque transmission connection between the turbine wheel and the housing assembly. The ratio of a flow outside diameter in the area of the turbine wheel to a friction outside diameter of the at least one friction element ranges from 1.30 to 1.80, preferably from 1.35 to 1.

Abstract: A hydraulic torque converter, particularly for use in a motor vehicle between the prime mover and the transmission of the power train, employs a combination of a bypass clutch with one or more torsional vibration dampers which brings about savings in space and/or in the number of parts. In addition, the torque converter can stand long periods of use and is less prone to wear, adverse influences of abruptly developing stresses and/or other undesirable influences than conventional torque converters. Furthermore, the improved torque converter employs or can employ a bypass clutch and/or one or more torsional vibration dampers simpler and less expensive than but superior to those in conventional torque converters.

Abstract: In a damper device of a lock-up clutch-equipped torque converter which has at least two rotating members that have a common rotation axis and are rotatable relatively to each other via an elastic member, an axial-direction support portion that supports the at least two rotating members in the direction of the rotation axis with respect to each other, and a radial-direction support portion that supports the rotating members in a radial direction with respect to each other are disposed on circumferences that are substantially equidistant from the rotation axis.

Abstract: A lockup device includes a piston, a clutch plate and an annular coupling member. The piston has a pushing portion opposed to a friction surface of a front cover, and an engagement portion projecting from a portion radially outside the pushing portion toward a front cover. The clutch plate is axially movably and non-rotatably engaged with the engagement portion, and has a frictional coupling portion arranged axially between the friction surface and the pushing portion. The coupling member has an axially flexible body fixed to the front cover, and a pressure-contact portion provided at a radially outer end of the body and arranged axially between the frictional coupling portion and the pushing portion.

Abstract: A torque converter which has a pump wheel, a turbine wheel, and a stator, which form a hydrodynamic circuit, and also a torsional vibration damper with a primary and a secondary damper element. The primary and the secondary damper element are connected to each other in a rotationally elastic manner by at least one set of springs. The turbine wheel has a turbine wheel shell and is supported rotatably with respect to a turbine wheel hub in a first bearing, which provides axial and radial support. The secondary damper element is mounted nonrotatably on the turbine wheel hub. The turbine wheel acts by way of an intermediate element on the primary damper element. The stator is mounted on a stator hub, which is supported by an axially operative second bearing on a turbine wheel base, which is connected to the turbine wheel shell. The first bearing is located radially outside the second bearing.