Chaff spreader for combine harvester
Patent 4591102 Issued on May 27, 1986. Estimated Expiration Date: 
August 20, 2004. 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.
August 20, 2004. 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 1770707 2638351 3329322 Straw and chaff chopper and spreader Patent #: 4292795 InventorApplicationNo. 06/642364 filed on 08/20/1984US Classes:239/655, Laterally extending scatter unit239/679, Rotating scatterer receiving material peripherally239/682, Plural239/689Scatterer is tubular or in surrounding housingExaminersPrimary: Nase, Jeffrey V.Assistant: Jones, Mary Beth Attorney, Agent or FirmInternational ClassesA01D 41/00 (20060101)A01D 41/12 (20060101) AbstractApparatus for spreading chaff includes brackets for mounting the apparatus beneath and rearwardly of the cleaning shoe of a combine or other grain threshing machine and separately of any straw chopping and spreading apparatus provided adjacent the straw discharge opening. The apparatus comprises a pair of fans rotatable in a horizontal plane above a base plate and upstanding walls defining housings around the fans and discharge nozzles extending to the sides of the apparatus to discharge the chaff from each fan in a sideward direction and to substantially prevent discharge of chaff rearwardly of the apparatus.Other References
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