A hydrokinetic torque coupling device comprises a casing, a torque converter, a torsional vibration damper and a lockup clutch disposed within the casing. The torque converter comprises an impeller and a turbine-piston coaxially aligned with the impeller and axially movable toward and away from the casing to position the hydrokinetic torque coupling device into and out of a lockup mode in which the turbine-piston is non-rotatably frictionally coupled to the casing. The torsional vibration damper comprises an input member non-moveably secured to the turbine-piston, a first retainer plate and the elastic members elastically coupling the input member to the first retainer plate. The input member includes an actuating portion configured to actuate the lockup clutch. The lockup clutch is disposed within the casing between the actuating portion of the input member and a cover shell of the casing for frictionally coupling the casing and the turbine-piston.

A torsional vibration damper of a hydrokinetic torque-coupling device. The torsional vibration damper comprises an input member including a first side plate and a supporting member mounted to the first side plate, and a radially elastic member elastically coupled to the input member. The radially elastic member includes a central part and an elastic blade formed separately from the central part. The central part has a mounting portion. The elastic blade has a connection portion, a free distal end and a curved raceway portion disposed between the connection portion and the distal end. The connection portion of the elastic blade is non-rotatably connected to the mounting portion of the central part. The curved raceway portion of the elastic blade is configured to elastically engage the supporting member and to elastically bend in the radial direction upon rotation of the input member with respect to the radially elastic member.

A hydrokinetic torque converter for coupling driving and driven shafts. The torque converter comprises an impeller wheel rotatable around a rotational axis, a turbine wheel rotatable coaxially aligned with the impeller wheel, a stator situated axially between the impeller wheel and the turbine wheel, and a one-way turbine clutch permitting rotational movement of the turbine wheel in one circumferential direction only. The one-way turbine clutch includes an outer ring non-rotatably connected to the turbine shell, an inner ring disposed radially within the outer ring and a plurality of engagement components positioned radially between the outer and the inner rings. The turbine wheel includes a turbine shell and at least one coupling member extending axially outwardly from the turbine shell in the direction toward the one-way turbine clutch. The at least one coupling member of the turbine wheel is non-rotatably coupled to the outer ring of the one-way turbine clutch.

A hydrokinetic torque coupling device includes a turbine wheel (3), an impeller wheel (2) able to hydrokinetically drive the turbine wheel (3), a cover (5) non-rotatably attached to the impeller wheel (2) so as to define an internal volume (6) accommodating the turbine wheel (3), and a seal (18) mounted to a radially external periphery of the turbine wheel (3). The turbine wheel (3) being able to be axially moved between an engaged position and a disengaged position. The seal (18) configured to engage one of a matching sealing surface (22) of the impeller wheel (2) positioned radially outside the turbine wheel (3) and the cover (5) in the engaged position and to be disengaged from one of the matching sealing surface (22) the impeller wheel (2) and the cover (5) in the disengaged position.

A torque fluctuation inhibiting device includes a mass body, a plurality of centrifugal elements, an actuation preventing mechanism and a cam mechanism. The mass body is rotatable with a rotor, and is rotatable relatively to the rotor. Each of the centrifugal elements is disposed to receive a centrifugal force to be generated by rotation of the rotor and the mass body, and is movable in a radial direction. The actuation preventing mechanism restricts at least one of the centrifugal elements from moving outward in the radial direction when the rotor or the mass body is rotated at a predetermined speed or greater. The cam mechanism converts the centrifugal force into a circumferential force with use of actuation of the plurality of centrifugal elements moved in the radial direction by the centrifugal force when a relative displacement is produced between the rotor and the mass body in a rotational direction.

A turbine torsional vibration damper, in particular a simple torsional vibration damper, for a vehicle, preferably for a drivetrain of a motor vehicle, having a damper part for introducing a torque into the turbine torsional vibration damper and a damper part for extracting the torque from the torsional vibration damper, wherein a pendulum mass flange of a centrifugal pendulum device is rigidly coupled mechanically with a damper part of the turbine torsional vibration damper. A converter or a torque transmission device for a vehicle, in particular for a drivetrain of a motor vehicle, wherein the converter or torque transmission device has a turbine torsional vibration damper according to the invention.

A dynamic vibration absorbing device for an automobile can be on an output-side member of a torque converter. The dynamic vibration absorbing device includes a rotary member, a mass part, and an elastic member. The rotary member is fixed to the output-side member. The rotary member can be rotated about a rotational center of the output-side member. The mass part includes a first accommodation part. The mass part is for attenuating vibration of the output-side member by rotating about the rotational center relative to the rotary member. The elastic member is held by the first accommodation part. The elastic member elastically couples the rotary member and the mass part in a rotational direction. The elastic member is for generating a hysteresis torque by sliding against the first accommodation part in rotation of the rotary member.

A hydrokinetic torque converter including a secondary piston for purposes of enhancing operation of the lock-up feature, and the method of operating such a converter. The secondary piston moves axially behind the turbine-piston to urge respective lock-up clutch friction surfaces into phased engagement. In an initial phase of engagement, friction surfaces between the secondary piston and turbine-piston engage to begin the reduction of relative rotary motion between the converter impeller and turbine-piston. This initial phase of slowing relative movement between the impeller and turbine-piston reduces pressure within the torus and the associated fluid forces separating the friction surfaces of the lock-up clutch. The secondary piston also slows and eliminates fluid flow from within the torus past the lock-up clutch and further reduces engagement resistance of the lock-up clutch owing to the lessening fluid pressure and flow. A more consistent lock-up clutch engagement, with higher torque capacity, is provided in both driven and coasting lock-up operation.

A torque transmission device between an input side and an output side including a torque converter having a pump, a turbine, a lockup clutch for transmitting a torque between the input side and the output side, and a torsional vibration damper arranged in a casing. The lockup clutch has a clutch input coupled to the casing, a clutch output rotatable relative to the input, and an actuating element for actuating the lockup clutch. The torsional vibration damper has at least one first damper stage comprising a first damper input part and a first damper output part, which can be rotated to a limited extent relative to the first damper input part by the action of at least one first energy storage element, wherein an absorber mass is attached to one of the damper components.

A torsional vibration damper comprises an axially moveable locking piston including a piston plate, a torque input member including a cover plate, a support plate disposed axially opposite the cover plate and a supporting member mounted to both the cover and support plates, and a unitary radially elastic output member pivotable relative to and elastically coupled to the torque input member. The output member is disposed axially between the cover plate and the piston plate. The output member includes an output hub and a curved elastic blade configured to elastically and radially engage the supporting member and to elastically bend in the radial direction upon rotation of the cover plate with respect to the output member. The cover plate at least partially covers an axially first outer surface of the output member. The support plate partially covers an axially second outer surface of the output member.