Tapered vane for agricultural harvester transition cone

A threshing system of an agricultural harvester, said threshing system including:

• a rotor cage including a concave;
• a transition cone defining an infeed to said rotor cage, said transition cone having an inner surface with a tapering inner circumference between a wider upstream end and a narrower downstream end;
• and
• a vane in said transition cone extending between said upstream end and said downstream end and at least partly around the tapering inner circumference, said vane including an upstanding segment extending away from the inner surface, with an upstream side of said upstanding segment facing said upstream end, and a downstream side of said upstanding segment facing said downstream end;
• and a base segment extending from the upstanding segment along the inner surface on the downstream side of said upstanding segment, said base segment has a thicker proximal region adjacent said upstanding segment and a thinner distal edge opposite thereto, said base segment including a curved exposed surface extending between said proximal region and said distal edge, said exposed surface including a plurality of ridges.

A threshing system of an agricultural harvester, said threshing system including:

• a rotor cage;
• a transition cone defining an infeed to said rotor cage, said transition cone having an inner surface with a tapering inner circumference between a wider upstream end and a narrower downstream end;
• and
• a plurality of vanes in said transition cone, each vane of said plurality of vanes extending between said upstream end and said downstream end and at least partly around the tapering inner circumference, each said vane including:
• an upstanding segment extending away from the inner surface, with an upstream side of said upstanding segment facing said upstream end, and a downstream side of said upstanding segment facing said downstream end;
• and
• a base segment extending from the upstanding segment along the inner surface on the downstream side of said upstanding segment, said base segment having a thicker proximal region adjacent said upstanding segment and a thinner distal edge opposite thereto, said base segment having a curved exposed surface extending between said proximal region and said distal edge, said curved exposed surface having a plurality of ridges.