Screen for separating objects by shape
US4254878A · kind A · utility
9Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Aug 22, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/92
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Mixed solid waste, such particularly as municipal waste, is subjected to treatment which separates the majority of the ferrous metal pieces from the other solids, and the invention provides apparatus for separating the resulting mass into (a) flat-shaped pieces (b) chunky-shaped pieces, and (c) long thin or otherwise oversized pieces by causing all the pieces to advance along a moving conveyor surface through successive stations at which openings of predetermined size and shape accept pieces of the (a) and (b) shapes, having only the (c) category on the conveyor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.