Helical wrapped filter element
US5290446A · kind A · utility
44Cited by
23References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1992 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jun 10, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/58
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An element for treating a fluid flowing through the element which comprises at least two filter medium layers helically wrapped around a pervious, hollow tube, with the filter medium layers forming an overall graded pore structure for the fluid treatment element and/or at least one diffusion layer positioned between the filter medium layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.