Patent ID: 7726122

Claim:
A hydrodynamic torque converter comprising: a housing connectable to a drive element for rotation in common around an axis of rotation, the housing being fillable with a fluid; a pump wheel in the housing; a turbine wheel in the housing and connected to a takeoff element; and a supporting/sealing hub area on an axial side of the housing and facing away from the drive element, the supporting/sealing hub area comprising: a first hub element permanently connected to the housing; and a second hub element connected to the first hub element for rotation in common around the axis of rotation, the second hub element being axially movable relative to the first hub element, the second hub element comprising an outside circumference, a sealing surface on the outside circumference, a first axial end facing away from the drive element, and a rotational driver formation at the first axial end, wherein each of the first hub element and the second hub element is sleeve-shaped, the second hub element radially surrounding the first hub element.