U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Combine grain tank discharge system

Patent 5443352 Issued on August 22, 1995. Estimated Expiration Date: Icon_subject January 9, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

363953

1704731

1767248

3152702

3155288

3265226

3669291

Sweep auger for bottom silo unloaders
Patent #: 4015734
Issued on: 04/05/1977
Inventor: Laidig

Sweep auger construction for a bottom unloading mechanism
Patent #: 4386695
Issued on: 06/07/1983
Inventor: Olson

Container unloading system
Patent #: 4717308
Issued on: 01/05/1988
Inventor: Kuhns

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Inventor

Assignee

Application

No. 369993 filed on 01/09/1995

US Classes:

414/526, Screw type198/550.01, Bin having a power-driven conveyor section for discharging or feeding discharge to a gravity or power-driven section198/608, Plural rotating sections198/661, Having axially varying capacity414/310Comprising screw conveyor

Examiners

Primary: Huppert, Michael S.
Assistant: Eller, James

Foreign Patent References

  • 0143108 EP. 05/13/1989
  • 886722 DE. 08/13/2012
  • 2126118 DE. 12/13/1972
  • 2624434 DE. 12/13/1976
  • 3406649 DE. 08/13/1985

International Classes

A01D 041/12
B65G 065/46

Abstract

A combine grain tank has a floor and a pair of fore-and-aft feed augers above the floor for moving grain forwardly along the floor of the tank to a laterally extending trough in the forward end of the floor. A laterally extending discharge auger is mounted in the trough for moving grain laterally along the floor to an auger-type unloading conveyor exteriorly of the grain tank. The discharge auger has constant diameter flighting along its length mounted on an auger tube that has a larger diameter upstream of the point where the feed auger nearest the unloading conveyor feeds grain into the trough.

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