Screening apparatus
US5732827A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1995 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Oct 25, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B1/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a screening apparatus for classifying material of different sizes. A screen is rotatably mounted on a frame for rotation around a first axis which is angled upwardly away from the horizontal, at an angle of from 0 to 30 degrees. The screen is symmetrical about the axis and has an open upper inlet end and a lower outlet end. The screen has a cylindrical portion extending from the inlet end towards the outlet end, having a diameter larger than its length, and a conical portion extending from the cylindrical portion towards the outlet end, tapering inwardly to a central outlet opening, the lowest point of the outlet opening being substantially higher than the lowest point of the screen. The frame is pivotally mounted on a trailer for pivoting about a longitudinal axis near a lower side edge of the trailer. The open inlet end of the screen faces one side of the trailer. A screened discharge conveyor and an oversize conveyor carried the screened and oversized material, respectively, away from the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.