A dynamic damper device occupies a small space in an axial direction and can achieve a reduction in weight. The dynamic damper device is mounted to a turbine shell of a torque converter, and includes a damper plate, an inertia ring and a plurality of torsion springs. The damper plate is fixed to the turbine shell and is configured to be rotated. The inertia ring has spring accommodation parts and slider accommodation parts along a circumferential direction, and is disposed to be rotatable relative to the damper plate. The plurality of torsion springs are disposed in the spring accommodation parts of the inertia ring, and elastically couple the damper plate and the inertia ring in a rotational direction.

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.

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.

A torque converter including an axis of rotation and a flange rotatable about the axis of rotation is disclosed. The torque converter includes a turbine shell independently rotatable about the axis of rotation relative to the flange. A first plate, disposed between the flange and the turbine shell, may be fixed to the turbine shell. A second plate, disposed between the flange and the turbine shell, may be radially outward relative to the first plate. The torque converter further includes a cover having an inner surface and a third plate disposed between the flange and the cover. The first plate may include at least one ramp protruding in an axial direction toward the flange, wherein the ramp is rotatably engageable with the flange for urging the flange axially in a direction toward the cover, and for transmitting an axial force for urging a clutch to engage.

A lock-up device for a torque converter includes an output rotary member rotatable with respect to an input rotary member. A plurality of large coil springs are disposed in radially outer positions so as to be aligned in a circumferential direction, the large coil springs separately compressed in a rotational direction by relative rotation between the input rotary member and the output rotary member. A plurality of small coil springs are set to have a free length shorter than a free length of the large coil springs, the small coil springs separately disposed in inner peripheral parts of the large coil springs so as to be movable therein. The respective coil springs are compressed in a sequential order of the plural large coil springs and then at least any one of the plural small coil springs by the relative rotation between the input rotary member and the output rotary member.

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.

A lock-up device includes an output rotary member rotatable relatively to a clutch portion and coupled to a turbine. A plurality of torque transmission elastic members elastically and rotation-directionally couple the clutch portion and the output rotary member. An intermediate member rotatable relatively to the clutch portion and the output rotary member causes at least two of the plural torque transmission elastic members to act in a series-like manner. A dynamic damper device includes a first inertia ring, a second inertia ring and a plurality of dynamic damper elastic members, the first and second inertia rings axially split and having pairs of accommodation recesses axially opposed to each other, the plural dynamic damper elastic members accommodated in the pairs of the accommodation recesses of the first and second inertia rings and elastically coupling the intermediate member and the first and second inertia rings.

A torque converter is provided. The torque converter, or torque converter assembly, operatively connects a primary mover and a transmission, and includes an input rotationally connected to the primary mover and an output rotationally connected to the transmission. The torque converter includes a fluid coupling having impeller blades and turbine blades. The fluid coupling transfers torque between the impeller blades and the turbine blades when the input and the output are rotating at different speeds. A mini damper is disposed in line with the fluid coupling between the input and the output. A torque converter clutch is configured to selectively slip or selectively lock, such that torque may be transferred directly between the input and the output. A primary damper is disposed between the input and the output.

A torsional vibration damper is provided that includes a drive-side transmission element, a driven-side transmission element, and an energy-storage member rotatable relative to the drive-side transmission element and rotationally coupled to the driven-side transmission element. The energy-storage member includes radially inner elastic blades, and radially outer elastic blades positioned radially outward relative to the radially inner elastic blades. The drive-side transmission element is operatively associated with the energy-storage member to cause the radially inner elastic blades and the radially outer elastic blades to be displaced radially and elastically in response to relative rotation between the drive-side and driven-side transmission elements about a rotational axis of the torsional vibration damper. A hydrodynamic torque converter including the torsional vibration damper is also provided.

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.