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

Straw spreader for a combine harvester and method of spreading

Patent 5021030 Issued on June 4, 1991. Estimated Expiration Date: Icon_subject March 2, 2010. 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

1462387

1940008

2886334

3412943

3414200

Device for spreading material
Patent #: 4350303
Issued on: 09/21/1982
Inventor: van der Lely

Straw chopper and spreader assembly
Patent #: 4526180
Issued on: 07/02/1985
Inventor: Scott ,   et al.

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

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

Inventors

Assignee

Application

No. 487261 filed on 03/02/1990

US Classes:

460/111, STRAW CHAFF SPREADER OR HANDLING (DISCHARGE)239/673, Plural scatterers receiving material axially239/682, Plural460/112With chopper

Examiners

Primary: Britts, Ramon S.
Assistant: Bagnell, David

Attorney, Agent or Firm

International Class

A01F 029/12

Abstract

A straw spreader for the rear straw discharge of a combine comprises a frame mounted on ground wheels together with a pair of hitch arms which extend forwardly from the frame on either side of the rear portion of the combine for attachment to the combine frame structure. The separate frame can thus move up and down relative to the rear of the combine and maintains a pair of spreader spinners on the frame at a predetermined height relative to the ground. Guide surfaces collect the material from the chopper at the rear of the combine and direct it onto the spinners for a spreading action. The low height of the spreading action reduces dust emission and enhances spreading consistency. An accumulator can be provided between the spreader and the discharge in the rear of the combine to allow the amount of straw spread to be varied relative to the amount collected at any particular point on the field.

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