A torsional damper for a torque transmission device, comprising: a first element (1) and a second element (2) rotationally movable with respect to one another; and a first damping means and a second damping means, each damping means comprising: an elastically deformable blade (9) having a fastening portion (12) and an elastic portion (13), an abutment element carried by the other of the first and second elements and configured, for an angular deflection between the first and second elements with respect to an inactive angular position, to apply a flexural load onto the blade,
the elastic portion of the blade of the first damping means proceeds circumferentially beyond the fastening portion of the blade of the second damping means.

A torsional vibration damper for torsional vibration damping in a drive train of a motor vehicle is provided with a primary mass for introducing a torque, wherein the primary mass has a flywheel which can be connected to an input shaft, a secondary mass which can be rotated to a limited extent relative to the primary mass for dissipating a torque, an energy storage element that can act on the primary mass and on the secondary mass and a centrifugal pendulum connected to the secondary mass to provide restoring torque directed against a rotational irregularity, wherein the centrifugal pendulum is arranged in the axial direction between the flywheel of the primary mass and the energy storage element. By arranging the centrifugal pendulum between the flywheel of the primary mass and the energy storage element, otherwise free installation space on the outside can be used for better vibration damping behavior, while on the inside an increase in the axial installation space requirement is avoided, so that good damping is made possible in a drive train with a small installation space requirement.

A torsional vibration damper for torsional vibration damping in a drive train of a motor vehicle is provided with a primary mass for introducing a torque, wherein the primary mass has a flywheel which can be connected to an input shaft, a secondary mass which can be rotated to a limited extent relative to the primary mass for dissipating a torque, an energy storage element that can act on the primary mass and on the secondary mass and a centrifugal pendulum connected to the secondary mass to provide restoring torque directed against a rotational irregularity, wherein the centrifugal pendulum is arranged in the axial direction between the flywheel of the primary mass and the energy storage. By arranging the centrifugal pendulum between the flywheel of the primary mass and the energy storage element otherwise free installation space on the outside can be used for better vibration damping behavior, while on the inside an increase in the axial installation space requirement is avoided, so that good damping is made possible in a drive train with a small installation space requirement.

A filtering pulley having a hub adapted to be fixed to a rotating shaft, a pulley ring mounted coaxial and rotationally free on the hub, and a plurality of elastic assemblies arranged circumferentially with respect to the hub and the pulley ring and each interposed between a pair of first elements integral with the hub and between a pair of second elements integral with the pulley ring is disclosed. Each elastic element forms with the first elements and with the second elements respective angular clearances, and the pulley ring and the hub have a free angle of relative rotation equal to the sum of the above-mentioned angular clearances.

A filtering pulley having a hub adapted to be fixed to a rotating shaft, a pulley ring mounted coaxial and rotationally free on the hub, and a plurality of elastic assemblies arranged circumferentially with respect to the hub and the pulley ring and each interposed between a pair of first elements integral with the hub and between a pair of second elements integral with the pulley ring is disclosed. Each elastic element forms with the first elements and with the second elements respective angular clearances, and the pulley ring and the hub have a free angle of relative rotation equal to the sum of the above-mentioned angular clearances.