Abstract: An elastic return device including a gasket and a clutch mechanism whose actuating system includes a control chamber designed to receive a pressurized fluid, a piston which is axially movable in the control chamber so as to engage or disengage the corresponding clutch, a balancing chamber situated opposite the control chamber in relation to the piston, and an elastic return device housed in the balancing chamber and designed to exert an axial force against the piston. According to the invention, the elastic return device includes, on one of its faces bearing against the piston, an internal peripheral end which extends radially beneath the piston and which carries a gasket in order to seal off the balancing chamber from the control chamber. The invention likewise relates to a transmission system including such a dual clutch mechanism.

Abstract: A device for damping torsional oscillations including at least one support being displaced rotationally about an axis, a plurality of pendular bodies, each pendular body being mobile in relation to the support, and a friction-based connection between two circumferentially adjacent pendular bodies.

Abstract: A torque converter comprising a torque input element (19), an impeller wheel (3) rotationally coupled to the torque input element (19) and able to hydrokinetically drive a turbine wheel (4), a torque output element (8), clutch means (10, 38) movable between an engaged position in which the torque input element (19) and the torque output element (8) are rotationally coupled through damping means (12, 43, 44, 45), and a disengaged position in which the torque input element (19) and the torque output element (8) are rotationally coupled through the impeller wheel (3) and the turbine wheel (4), with a first bearing (31) being axially mounted between the impeller wheel (3) and the reactor (5), with a second bearing (31?) being axially mounted between the reactor (5) and the turbine wheel (4).

Abstract: The invention relates to a torque transmitting device comprising a torque input element (17a, 17b) and a torque output element (8) able to pivot about a shaft (X) with respect to one another, at least one elastic leaf (22), rotationally coupled to the torque output element (8) or to the torque input element (17a, 17b) respectively, the elastic leaf (22) being able to be elastically and radially supported by a supporting member (18) carried by the torque input element (17a, 17b) or the torque output element (8) respectively, the elastic leaf (22) being able to bend upon rotation of the torque input element (17a, 17b) with respect to the torque output element (8).

Abstract: A torsional vibration damper assembly for a hydrokinetic torque coupling device, comprises a torsional vibration damper, and a dynamic absorber operatively connected to the torsional vibration damper. The torsional vibration damper comprises a driven member rotatable about a rotational axis, a first retainer plate rotatable relative to the driven member coaxially with the rotational axis, and a plurality of damper elastic members interposed between the first retainer plate and the driven member. The damper elastic members elastically couples the first retainer plate to the driven member. The dynamic absorber includes an inertial member. The inertial member is mounted to the torsional vibration damper rotatably relative to the driven member. The inertial member is rotationally guided and centered relative to the rotational axis by the driven member of the torsional vibration damper.

Abstract: A hydrokinetic torque converter includes an impeller, an axially displaceable turbine piston, and impeller and turbine-piston lockup clutch core plates. The impeller lockup clutch core plate is situated between the impeller shell and the turbine-piston shell, is connected to an impeller core ring, and has a first surface. The turbine-piston lockup clutch core plate is situated between the impeller shell and the turbine-piston shell, is connected to a turbine-piston core ring, and is axially displaceable with the turbine-piston to move a second surface of the turbine-piston lockup clutch core plate axially towards and away from the first surface for positioning the torque converter respectively into and out of a lockup mode in which the turbine-piston is mechanically interlocked to the impeller.

Abstract: A torsional vibration damper assembly for a hydrokinetic torque coupling device, comprises a torsional vibration damper and a dynamic absorber operatively connected to the torsional vibration damper. The torsional vibration damper comprises a driven member rotatable about a rotational axis, a first retainer plate rotatable relative to the driven member coaxially with the rotational axis, and a plurality of damper elastic members interposed between the first retainer plate and the driven member. The damper elastic members elastically couple the first retainer plate to the driven member. The dynamic absorber includes an inertial member. The dynamic absorber is mounted to the torsional vibration damper and is rotationally guided and centered relative to the rotational axis by one of the first retainer plate and the driven member of the torsional vibration damper.

Abstract: A device for damping torsional oscillations, including: a pendulum-type torsional oscillation damper, a supplementary torsional oscillation damper including an input element, an output element, wherein both are configured to rotate around one axis rotation, and at least one mechanical energy accumulator device disposed between the input and output elements, a torque limiter, including at least one friction coating fixed on a disk, configured to be displaced around the axis. The disk is connected to rotate with the input element of the supplementary torsional oscillation damper and the friction coating is fixed to the disk of the torque limiter by an adhesively bonded surface-to-surface joint.

Abstract: A torque transmission assembly including a hydrodynamic torque convener able to be coupled to a crankshaft on the one hand, and able to be coupled to a gearbox input shaft on the other, the torque converter including a primary element and a secondary element which are rotationally mobile about an axis of rotation, and damping means including a transmission member and a bearing element, the transmission member including an elastic leaf rotating as one with the primary element or with the secondary element, and the bearing element being home by the secondary element or by the primary element respectively, the elastic leaf being capable of flexing and of transmitting a rotational torque between the primary element and the secondary clement, the flexing of the elastic leaf being accompanied by a relative rotation between the primary and secondary elements.

Abstract: The invention relates to a hydrokinetic torque coupling device for a motor vehicle, comprising a torque input element (11) intended to be coupled to a crankshaft (1), an impeller wheel (3) rotationally coupled to the torque input element (11) and able to hydrokinetically drive a turbine wheel (4), a torque output element (8) intended to be coupled to a transmission input shaft (2), clutch means (10) movable between an engaged position wherein the torque input element (11) and the torque output element (8) are rotationally coupled through damping means (23, 27), and a disengaged position wherein the torque input element (11) and the torque output element (8) are rotationally coupled through the impeller wheel (3), the turbine wheel and the damping means (23, 27).

Abstract: A hydrokinetic torque coupling device features a casing comprising a casing shell and an impeller shell, an impeller, a turbine-piston, a damper assembly comprising a drive member non-moveably connected to the turbine-piston and a driven member elastically coupled to the drive member, and a clutch member comprising a clutch plate and a connecting member extending through the damper assembly and non-moveably interconnecting the clutch plate with the turbine-piston. The clutch plate has an axially outer surface facing an engagement surface of the casing. The turbine-piston is axially displaceable relative to the casing to move the clutch member axially toward and away from the engagement surface of the casing for positioning the hydrokinetic torque coupling device into and out of a lockup mode in which the clutch member and the casing frictionally interlock with one another so that the casing is non-rotatable relative to the turbine-piston.

Abstract: A hydrokinetic torque coupling device for coupling together a driving shaft and a driven shaft features a casing including a casing shell and an impeller casing shell, an impeller including the impeller shell, a turbine-piston including a turbine-piston shell, and an elastic element slidably engaging the turbine-piston and being connected to the casing. The elastic element is configured to bias the turbine-piston toward the impeller. The casing is rotatable about a rotational axis so that the impeller shell is disposed axially opposite to and fixedly connected to the casing shell. The turbine-piston is coaxially aligned with and hydro-dynamically drivable by the impeller.

Abstract: A hydrokinetic torque coupling device features a casing (12) including an impeller shell (18), a casing shell (20), and an intermediate casing component (22) connecting the impeller and casing shells. The intermediate casing component (22) includes a casing wall portion and a piston engagement portion (26) extending inward from and being non-rotatable relative to the casing wall portion. The device further features an impeller (30) including the impeller shell (20). The turbine-piston (32) is coaxially aligned with and hydrodynamically drivable by the impeller (30), and includes a turbine-piston shell (35) having a turbine-piston flange (38) with an engagement surface that is movable axially toward and away from an engagement surface of the piston engagement portion to position the hydrokinetic torque coupling device respectively into and out of a lockup mode.

Abstract: A clutch friction disc includes a clutch damping system. The clutch damping system includes a pendulum body including first and second pendulum masses arranged on a support displaced rotationally around an axis. The clutch damping system also includes a rolling member to interact with a first raceway defined by the support and with a second raceway defined by the pendulum body. The clutch damping system also includes an interposition part including an interposition region having an axially facing surface interposed axially between the first pendulum mass and the rolling member to prevent contact in the axial direction between the first pendulum mass and the rolling member. The interposition part includes a fastening region to fasten the interposition part to the first pendulum mass. The fastening region includes at least two fastening tabs and a reinforcement rim extending from the interposition region to connect the fastening tabs.

Abstract: A hydrokinetic torque coupling device comprises a casing rotatable about a rotation axis, a torque converter including an impeller wheel and a turbine wheel disposed in the casing coaxially with the rotation axis, a locking piston including an annular piston body and a plurality of drive teeth unitary with the piston body, and a torsional vibration damper comprising a input member non-rotatably coupled to the drive teeth of the locking piston, elastic members and an output member elastically coupled to the input member trough the elastic members. The locking piston is axially moveable so as to selectively engage the locking piston against the casing. The input member has window-shaped mating openings complementary to each of the drive teeth. The drive teeth drivingly engage the mating openings of the input member so as to non-rotatably couple the locking piston and the input member.

Abstract: The invention relates to a hydrokinetic torque coupling device for a motor vehicle, comprising a torque input element (11) intended to be coupled to a crankshaft (1), an impeller wheel (3) rotationally coupled to the torque input element (11) and able to hydrokinetically drive a turbine wheel (4) through a reactor (5), a torque output element (8) intended to be coupled to a transmission input shaft (2), clutch means (10) adapted to rotationally couple the torque input element (11) and the torque output element (8) in an engaged position, through damping means (22, 26), and adapted to rotationally uncouple the torque input element (11) and the torque output element (8) in a disengaged position.

Abstract: A device for damping torsion oscillations comprises support rotatably movable about an axis. A pendular body comprises first and second axially spaced pendular masses movable relative to the support. The first mass disposed axially on a first side of the support and the second mass disposed axially on a second side of the support. A member connects the first and second pendular masses. Each mass includes an opening in which the connecting member is force-fitted. The openings have radially exterior and interior edges. The connecting member has radially interior and exterior edges. The radially exterior edge extends between two angular ends of the connecting member, each defined by a lug. Each mass exerts a force on each lug, and via a one nose piece projecting radially and carried by the radially interior edge of the opening or the radially interior edge of the connecting member.

Abstract: A hydrokinetic torque coupling device comprises a casing rotatable about a rotation axis, a torque converter including an impeller wheel and a turbine wheel disposed in the casing coaxially with the rotation axis, a turbine hub disposed in the casing coaxially with the rotation axis and fixed to the turbine wheel, and a torsional vibration damper. The torsional vibration damper comprises a driven member fixed to the turbine hub, a back plate rotatably mounted to the turbine hub, a plurality of circumferentially acting elastic members, and a damper retainer plate rotatably mounted to the back plate coaxially with the rotation axis. The back plate has a plurality of window-shaped openings separated circumferentially from one another by radial tabs. The elastic members are interposed between the driven member and the back plate in the window-shaped openings. The damper retainer plate is operatively connected to the elastic members.

Abstract: A pendulum damping device for a motor vehicle transmission, having at least one pendulum mass (33), a central part (33a) of which is mounted movably on a support (26) capable of pivoting around an axis, and having at least one roller (36) mounted radially between the radially outer periphery of the central part (33a) and a radially outer part of the support (26), in such a way that during operation, the central part (33a) of the pendulum mass (33) abuts radially outwardly against the roller (36), the latter (36) in turn abutting radially outwardly against the support (26). The pendulum mass (33) comprises at least one lateral part (33b) fastened to the central part (33a) and designed so that the center of gravity of the pendulum mass (33) is situated radially outside the contact regions between the central part (33a) of the pendulum mass (33) and the roller (36).

Abstract: A torque transmission device for a motor vehicle, having a torque input element, a torque output element, and at least one pair of elastic members mounted between the torque input and output elements and counteracting rotation of input and output elements with respect to one another. The elastic members are arranged serially by means of a phasing member so that the elastic members deform in phase with one another. The stiffness K1 of the elastic member mounted between the torque input element and the phasing member is less than the stiffness K2 of the elastic member mounted between the phasing member and the torque output element, the ratio K2/K1 being equal to at least 2. One elastic member of the at least one pair of elastic members includes two coaxial helical springs mounted one inside the other.