Patent ID: 9739358
Date: 2017-08-22
CPC Classifications: F16H

Claim:
1. A hydrokinetic torque coupling device for coupling together a driving shaft and a driven shaft, the torque coupling device comprising: a casing shell rotatable about a rotational axis and having a first engagement surface; a torque converter rotatable about the rotational axis and comprising an impeller and a turbine, the turbine being hydrodynamically drivable by the impeller and comprising a turbine shell; an output hub; a damper-piston assembly comprising torsional vibration damping members and a piston retainer plate having a second engagement surface facing the first engagement surface, the torsional vibration damping members being circumferentially spaced from one another and having opposite first and second ends, the piston retainer plate comprising a shell portion retaining the torsional vibration damping members, first angular driving tabs engaging radially inner halves of the first ends of the torsional vibration damping members, and second angular driving tabs engaging radially outer halves of the first ends of the torsional vibration damping members; and a transmission component through which the torsional vibration damping members are interconnected to the output hub, the transmission component engaging the second ends of the torsional vibration damping members, wherein the damper-piston assembly is axially displaceable relative to the casing shell between a lockup mode in which the first and second engagement surfaces are frictionally engaged with one another so that the piston retainer plate and the casing shell are non-rotatable relative to one another, and a hydrodynamic transmission mode in which the first and second engagement surfaces are spaced from and rotatable relative to one another.