Patent ID: 11895951
Assignee: DEERE & COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC A  F | IPC A  F

Claim 15:
16. A harvesting machine, comprising:
a ground engaging mechanism configured to selectively move the harvesting machine along an underlying surface;
a prime mover configured to selectively power the ground engaging mechanism;
a harvesting head configured to harvest a crop from the underlying surface;
a processing assembly configured to separate debris from the crop;
an extractor assembly in the processing assembly, the extractor assembly comprising:
a fan assembly comprising a fan hub comprising blades cantilevered from a radially inner end to the fan hub and extending radially away from the fan hub, the fan assembly configured to separate debris from the crop, the fan assembly having an inlet side and an exhaust side and selectively powered by a motor to rotate about a rotation axis; and
a hub cover positioned along the rotation axis and extending at least partially into the inlet side of the fan assembly;

wherein, the hub cover is adjustable to alter a volume of displacement to agitate crop and debris presented to the inlet side of the fan assembly;
wherein, the hub cover is positioned along the rotation axis so the fan assembly draws air and other debris from the inlet side of the hub cover along the rotation axis, past the hub cover, and to the exhaust side of the fan assembly along the rotation axis, the exhaust side being opposite of the inlet side relative to the fan assembly along the rotation axis.