Method and apparatus for a self-purifying filter system
US5879552A · kind A · utility
Inventor
Key dates
| Filing date | Jul 31, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Jul 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A self-purifying filter apparatus comprising (1) a filter having a first surface and a second surface; (2) flow control means, such as a vacuum pump, for causing a stream of fluid interspersed with solid particulates to pass from the first surface to the second surface through the filter, thereby removing some of the solid particulates from the first stream of fluid and depositing them on the first surface; and (3) a purging device, such as a small reservoir of water (potentially formed, in part, by water previously filtered by the filter), for causing a second stream of fluid to pass from the second surface to the first surface through the filter without substantially changing the position of the filter, thereby rinsing and removing from the first surface at least some of the solid particulates that were deposited there.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.