Turbine hub of a torque converter

A turbine hub for a torque converter that is configured to rotate about an axis, comprising:

• a first plate;
• a second plate axially adjacent to the first plate and non-rotatably connected thereto, the second plate defining a plurality of apertures that are circumferentially offset from each other;
• and
• a third plate non-rotatably connected to the second plate and positioned axially adjacent thereto, such that the second plate is positioned axially between the first and third plates, the third plate defining a plurality of ports that are circumferentially offset from each other and are aligned with the corresponding plurality of apertures defined by the second plate, wherein at least one of:
• the second plate includes a projection that extends about at least one of the plurality of apertures defined by the second plate;
• and
• the third plate includes a projection that extends about at least one of the plurality of ports defined by the third plate,
• wherein the second and third plates are projection welded to each other at the projection of at least one of the second plate and the third plate.

A torque converter, comprising:

• a cover arranged to receive torque for rotation about an axis;
• an impeller non-rotatably connected to the cover;
• a lock-up clutch including a piston;
• a turbine that includes a turbine shell and a turbine hub, the turbine hub comprising:
• a first plate to which the turbine shell is non-rotatably connected;
• a second plate axially adjacent to the first plate and non-rotatably connected thereto, the second plate defining a plurality of apertures that are circumferentially offset from each other;
• and
• a third plate non-rotatably connected to the second plate and positioned axially adjacent thereto, such that the second plate is positioned axially between the first and third plates, the third plate defining a plurality of ports that are circumferentially offset from each other and are aligned with the corresponding plurality of apertures defined by the second plate;
• and
• a seal plate that is non-rotatably connected with the third plate.