Torque converter with turbine clutch including a separate piston

A torque converter, comprising:

• a cover arranged to receive torque;
• an impeller including:
• an impeller shell non-rotatably connected to the cover;
• and,
• at least one impeller blade connected to the impeller shell;
• a turbine including
• a turbine shell;
• and,
• at least one turbine blade connected to the turbine shell;
• an output hub connected to the turbine shell and arranged to non-rotatably connect to an input shaft for a transmission;
• a turbine clutch including a piston, the piston:
• separate from the turbine shell;
• non-rotatably connected to the turbine shell;
• and,
• displaceable, in a first axial direction and for a lock-up mode, to non-rotatably connect the piston and the impeller shell;
• a first chamber formed, at least in part, by the piston and the turbine shell;
• and,
• a leaf spring located in the first chamber and non-rotatably connected to the turbine shell and the piston.