Torque converter pump hub with profiled assembly surface

A torque converter, comprising:

• a cover;
• a turbine;
• a pump in fluid communication with the turbine and including a pump shell fixedly connected to the cover;
• a pump hub connected to the pump shell such that the pump shell and the pump hub are fixed with respect to rotation, the pump hub including an outer circumferential surface in communication with a distal end of the pump hub;
• and,
• a plurality of flattened segments and a plurality of sloped surfaces disposed in the outer circumferential surface, wherein:
• each flattened segment is in communication with a respective pair of sloped surfaces;
• and,
• the sloped surfaces are arranged to receive a plurality of protrusions for a transmission pump gear and to urge the pump hub or the pump gear into rotational motion to urge the plurality of protrusions into mating engagement with the plurality of flattened segments.

An assembly for a torque converter, comprising:

• a pump shell;
• a pump hub connected to the pump shell such that the pump shell and the pump hub are fixed with respect to rotation, the pump hub including a radial surface at a distal end of the pump hub;
• and,
• a plurality of indentations and a plurality of sloped surfaces extending from the radial surface, wherein:
• each indentation is in communication with a respective pair of sloped surfaces;
• and,
• the sloped surfaces are arranged to receive a plurality of protrusions for a transmission pump gear and to urge the pump hub and the pump gear into relative rotational motion to urge the plurality of protrusions into mating engagement with the plurality of indentations.