Apparatus for securing underdrain filter block
US9072990B2 · kind B2 · utility
4Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jan 4, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49828
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.