Rotary grain screener
US4919642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Nov 30, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02B1/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotary grain screener is disclosed in which the primary grain-advancing flighting is mounted on the internal surface of the rotary screener drum and an inner auger is mounted on a central axial drive shaft to advance the grain forward in the drum at a greater rate than is accomplished by the flighting on the internal surface of the drum. The screener drum is supported on the central drive shaft which has a support bearing on the input auger housing and the drum is further provided at the input end with two annular bearing plates which are attached to the end plate of the drum and have a close fit around the input auger housing for closure and support purposes. A single motive power source drives the drive assembly which operates both the input auger and the screener drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.