Sifting device
US7195121B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Dec 8, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B1/485
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sifting device including a sieve box (1), which is caused to oscillate using a drive (4), as a fundamental oscillation system having essentially horizontal first transverse carriers (1.3) and a supplementary oscillation system (2), attached to the sieve box (1), having essentially horizontal second transverse carriers (2.3), positioned essentially parallel to the first transverse carriers, which are each positioned between two first transverse carriers (1.3) and are connected thereto by stretchable sieve liner strips (3), with, for two sequential transverse carriers, the transverse carrier closer to the feeding side (A) being higher than the subsequent transverse carrier, which is closer to the discharge side (B), with the sifting device having at least two sections, in which the height difference between the centers of gravity of two sequential transverse carriers (1.3, 2.3) is greater in the particular feeding-side section than in the discharge-side section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.