Cleanable dust filter comprising a zigzag pleated filter pack
US7883572B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2006 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Sep 2, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2265/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cleanable filter for particulate material, includes a zigzag pleated filter pack, spacers disposed between the pleats in the filter pack and a frame having an upper and lower part covering the respective upper and lower side of the filter pack that contains the ends of the fold lines and two lateral parts covering the opposite sides of the filter pack that contains the ends of the filter medium zigzag folded into a filter pack, the frame thereby leaving the opposite sides of the filter pack that contains alternate fold lines of the pleated filter pack, free for the passage of air. The filter medium in the filter pack includes a pleated sheet of polytetrafluorethylene and the spacers between the pleats consist of corrugated aluminum foils. An earthing element furthermore electrically connects the aluminum foils to each other and to an earth connection on the outside of the filter frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.