Flexible coupler for feeder shaft of combine harvester

A feeder conveyor for a combine harvester comprising:

• a gear box having a rotatable output shaft that is configured to rotate about a longitudinal axis;
• a rotatable driveshaft for moving belts or chains of the feeder conveyor;
• and
• a flexible and rotatable coupling assembly connecting the output shaft to the driveshaft, said coupling assembly comprising:
• (i) a spherical bearing that is connected to the driveshaft for accommodating a radial or angular misalignment between the driveshaft and the output shaft;
• and
• (ii) a flexible and rotatable coupler that is non-rotatably connected to the driveshaft and the output shaft for transferring rotation between the driveshaft and the output shaft, wherein the flexible and rotatable coupler is either directly or indirectly connected to the spherical bearing, said flexible and rotatable coupler having a flexible component that is configured for accommodating the radial or angular misalignment, the flexible component including an elongated body extending along the longitudinal axis, the elongated body having opposing first and second ends that are spaced apart along the longitudinal axis and a reduced thickness portion disposed between the first and second ends, wherein the first end is non-rotatably connected to the driveshaft and the second end is non-rotatably connected to the output shaft.