Door assembly for an axial-flow combine

Details Door assembly for an axial-flow combine Door assembly for an axial-flow combine

1992-04-20

1993-11-02

Melius, Terry Lee

Crop threshing or separating

Threshing

Axial flow through threshing section

460 68, 460 70, A01F 1220

Patent

active

052579590

ABSTRACT:
A door assembly for a rotary combine having a crop receiving and generally tubular rotor casing defining an elongated axis, a rotor coaxially disposed within the casing, and a vaned impeller arranged at a forward end of the rotor. The door assembly extends across and at least partially closes a forward open end of the casing. At least a portion of the door assembly has a flighted and ramped configuration extending circumferentially about its outermost edge for positively moving crop material axially rearward through the rotor casing to reduce crop material repeat on the downward rotational direction side and improving endwind efficiency.

REFERENCES:
patent: 3827443 (1974-08-01), Drayer
patent: 4489733 (1984-12-01), Underwood
patent: 4665929 (1987-05-01), Helm
patent: 4900290 (1990-02-01), Tanis
patent: 4993991 (1991-02-01), Yarmashev et al.

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