Abstract: A hydrokinetic torque coupling device includes an impeller, a casing having a first engagement surface, a turbine-piston hydrodynamically drivable by the impeller, and a bearing device. The turbine-piston is axially displaceable into and out of a lockup mode. The bearing device includes a non-axially oriented spring and a substantially incompressible rolling member urged by the spring against an oblique contact surface associated with the turbine-piston to thereby exert a variable axial force against the turbine-piston shell for biasing the turbine-piston out of the lockup mode. The variable axial force exerted by the bearing device against the turbine-piston shell decreases as the turbine-piston is axially displaced towards the lockup mode.

Abstract: A hydrokinetic torque coupling device includes a casing having opposite sidewalls and an outer wall extending between and connecting the opposite sidewalls, an impeller coaxial aligned with the rotational axis, a piston engagement member extending substantially radially inward from and non-moveable relative to the outer wall of the casing, and a turbine-piston coaxially aligned with and hydrodynamically drivable by the impeller. The turbine-piston includes a turbine-piston shell having a turbine-piston flange with an engagement surface that is movable axially toward and away from an engagement surface of the piston engagement member to position the hydrokinetic torque coupling device into and out of a lockup mode in which the turbine-piston is mechanically locked to and non-rotatable relative to the piston engagement member.