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

Claim 0:
1. A fan hub cover assembly for an extractor for a harvesting machine, 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;
a hub cover positioned along a rotation axis of the fan assembly of the extractor, the fan assembly configured to selectively draw air and other debris from a harvested crop;
wherein, the hub cover is positioned on an inlet side of the fan assembly along the rotation axis so the fan assembly draws air and other debris from the inlet side of the fan assembly along the rotation axis, past the hub cover, and to an exhaust side of the fan assembly along the rotation axis, the exhaust side being opposite of the inlet side relative to the hub cover along the rotation axis;
wherein, the hub cover is adjustable to alter the profile of the hub cover relative to the rotation axis.