Patent ID: 8727086

Claim:
A torque converter damper, comprising: an output hub for connection to a transmission input shaft; at least one first side plate arranged for: connection to a lock-up clutch for a torque converter so as to rotate in unison with at least a portion of the lock-up clutch; and, connection to a turbine of the torque converter so as to rotate in unison with the turbine; first and second intermediate flange plates; a flange connected to the output hub; a first plurality of springs engaged with the at least one first side plate and with the first and second intermediate flange plates; a second plurality of springs engaged with the first and second intermediate flange plates and with the flange; and, a first resilient element, wherein: an axial force applied by the first resilient element creates a first area of frictional contact between first and second components of the torque converter damper; relative rotation of the first and second components at the first area of frictional contact attenuates vibration at the output hub; the first and second components are rotatable with respect to each other; rotation of the first component is fixed to rotation of the output hub; rotation of the second component is arranged to be fixed to rotation of the turbine; and, the output hub is arranged to be rotatable with respect to the turbine.