Torque converter with wavy connection between damper and bypass clutch

A torque converter comprising:

• a case;
• a bypass clutch including a plate rotationally fixed to the case and a friction disk having a friction material configured to engage with the plate to rotationally couple the friction disk to the plate when the bypass clutch is engaged, wherein the friction disk includes a first circumferential connection surface with a first undulated profile defined by a plurality of alternating convex and concave arcuate segments;
• and
• a drive plate including a second circumferential connection surface with a second undulated profile defined by a plurality of alternating convex and concave arcuate segments, wherein the first and second connection surfaces are in meshing engagement with the convex segments of the friction disk meshing with the concave segments of the drive plate and with the concave segments of the friction disk meshing with the convex segments of the drive plate.

A torque converter comprising:

• a case defining a chamber;
• an impeller disposed in the chamber;
• a turbine disposed in the chamber adjacent to the impeller and configured to create a fluid coupling with the impeller;
• a bypass clutch including a plate fixed to the case and a friction disk having a friction material configured to engage with the plate to rotationally couple the friction disk to the plate when the bypass clutch is engaged, wherein the friction disk includes a first circumferential connection surface with a first undulated profile defined by a plurality of alternating convex and concave arcuate segments;
• and
• a damper including a driven plate connectable to a turbine shaft, a drive plate rotationally fixed to the friction disk and the turbine, and a resilient member connecting the driven plate to the drive plate, the drive plate includes a second circumferential connection surface circumscribed by the first connection surface, the second connection surface having a second undulated profile defined by a plurality of alternating convex and concave arcuate segments meshing with the concave and convex segments of the friction disk to rotationally fix the drive plate to the friction disk.