Underdrain structure for media filters
US5976370A · kind A · utility
18Cited by
5References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jul 7, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D24/4636
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An underdrain for a media filter used to filter liquids. The media particles rest on a pair of perforated plates having offset perforations. The plates are spaced apart a distance less than the size of the media particles. This allows the filtered liquid to flow through the plates but blocks passage of the media particles through the plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.