Vacuum conveyor device with a multi-stage filter system
US7354469B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Jun 8, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2265/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A Vacuum conveyor device (10) with a multi-stage filter system, has at least one inner filter (10A), one outer filter (10B), and one filter adapter (20) especially for air-tight and/or fluid-tight insertion of at least one of the filters, for which the outer filter is arranged up-stream of the inner filter. In order of preparing a filter system for a vacuum conveyor device, which features both the cleaning-related elements of conventional filters and also the safety-related advantages of multi-stage systems, but which remains compact in structure, the one or more inner filters (10A) are used as carrier units for the one or more outer filters (10B) that can be mounted on or inserted into these inner filters and can be connected or are connected to the filter adapters (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.