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

Crop residue spreader

Patent 6238286 Issued on May 29, 2001. Estimated Expiration Date: Icon_subject August 6, 2019. 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

Chaff spreader for combine harvester
Patent #: 4591102
Issued on: 05/27/1986
Inventor: Clarke

Chaff spreading apparatus
Patent #: 4617942
Issued on: 10/21/1986
Inventor: Garner

Straw chopper and spreader assembly
Patent #: 4735216
Issued on: 04/05/1988
Inventor: Scott ,   et al.

Harvester thresher with means for distributing grain-chaff mixture
Patent #: 4917652
Issued on: 04/17/1990
Inventor: Glaubitz, et al.

Chaff spreader
Patent #: 5082186
Issued on: 01/21/1992
Inventor: Bruns

Material spreading apparatus
Patent #: 5215500
Issued on: 06/01/1993
Inventor: Kirby

Adjustable chaff spreader for combine
Patent #: 5433664
Issued on: 07/18/1995
Inventor: Bonde

Harvester thresher
Patent #: 5769711
Issued on: 06/23/1998
Inventor: Roberg

Residue spreading apparatus for agricultural combines
Patent #: 5797793
Issued on: 08/25/1998
Inventor: Matousek, et al.

Harvester thresher
Patent #: 5833533
Issued on: 11/10/1998
Inventor: Roberg

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Inventors

Assignee

Application

No. 09/369641 filed on 08/06/1999

US Classes:

460/111, STRAW CHAFF SPREADER OR HANDLING (DISCHARGE)460/112With chopper

Examiners

Primary: Will, Thomas B.
Assistant: Kovacs, Arpad F

International Classes

A01D 41/00 (20060101)
A01D 41/12 (20060101)
A01F 12/40 (20060101)

Abstract

A crop residue spreader for a combine harvester is pivotally mounted to the combine for rotation about a transverse axis. The spreader has a spreading position in which crop residue is spread over a wide area at the rear of the combine. The spreader is rotatable about the transverse axis to a raised windrowing position to allow the residue to fall to the ground in a windrow for later collection. The disks of the spreader are covered by shrouds above and to the sides to reduce the upward dispersal of the residue. Gas assist cylinders are provided to lift the spreader to the windrow position after which a latch is engaged to hold the spreader there. A hold down latch operates to hold the spreader in the spreading position in opposition to the gas assist cylinders.

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