Patent ID: 8434602

Claim:
A torque transfer device in the drive train of a motor vehicle for transferring torque between a drive unit ( 3 ) and a shaft ( 26 ) rotatable about a rotation axis ( 12 ), comprising: a hydrodynamic torque converter ( 6 ), which comprises a damper with at least one spring, a converter cover ( 14 ), connectable to the drive unit ( 3 ), and which can be coupled through a pump shell ( 20 ) to a turbine shell ( 21 ) for torque transfer, which can be bridged by a torque converter lockup clutch ( 31 ) for torque transfer, which comprises a piston ( 30 ), which can be moved in an axial direction within a range towards the converter cover ( 14 ) in order to clamp a friction liner support ( 34 ) with at least one friction liner ( 35 , 36 ) between the piston ( 30 ) and the converter cover ( 14 ) for torque transfer, wherein: a friction ring ( 38 ) is disposed between the piston ( 30 ) and the friction liner support ( 34 ); said friction ring is movable in an axial direction within a range between the piston ( 30 ) and the friction liner support ( 34 ) and connected to the converter cover ( 14 ) for torque transfer; the piston ( 30 ) is moveable to contact the friction ring ( 38 ) to displace the friction ring ( 38 ) so that the friction ring ( 38 ) engages with the friction liner ( 36 ) located between the friction ring ( 38 ) and the friction liner support ( 34 ); the friction liner support ( 34 ) is in direct contact with the at least one spring; the friction ring ( 38 ) is movable in the axial direction by a leaf spring device ( 40 ) within the range, leaf spring device ( 40 ) connected to the converter cover ( 14 ) for torque transfer; the leaf spring device ( 40 ) comprises plural leaf spring elements ( 41 ), which are substantially disposed in circumferential direction; wherein the leaf spring elements ( 41 ) each comprise a first mounting spot ( 44 ), where the leaf spring elements ( 41 ) are mounted to the converter cover ( 14 ) and comprise a second mounting spot ( 45 ), where the leaf spring elements ( 41 ) are mounted to the piston ( 30 ); the leaf spring elements ( 41 ) respectively comprise a third mounting spot ( 46 ), where the leaf spring elements ( 41 ) are mounted to the friction ring ( 38 ); and the third mounting spot ( 46 ), in a circumferential direction, is disposed respectively between the first mounting spot ( 44 ) and the second mounting spot ( 45 ).