Multi-layer filter including retainers
US8147693B2 · kind B2 · utility
13Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/122
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A multi-layer filter including a first media layer surrounded by a second media layer, a third media layer surrounding the second media layer, and at least one retainer disposed between the first and second media layers or between the second and third media layers. The first, second and third media layers surround the central axis of the filter. The filter has multiple media layers in a compact package, providing increased media surface area which allows greater contaminant holding capacity, lower pressure drop, and lower face velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.