Separating grate for a grain harvester
US4875891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Aug 5, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F12/442
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an axial flow rotary separator, a separator grate forming part of a generally cylindrical separator casing consists of a series of circumferentially spaced, axially extending, finger bar assemblies. In each finger bar assembly side by side fingers extend circumferentially in the direction of rotation, supported cantilever fashion by an axially extending finger support bar. The fingers and support bar inner surfaces all lie approximately in a cylindrical surface but the radial offset of the free ends of the fingers relative to the following finger support bar, may be chosen or varied according to the crop handled and the grate characteristics desired. In a second embodiment a threshing concave of the same general structure is used in conjunction with a conventional rasp bar threshing cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.