Trench drain filter assembly
US7374364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2007 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Jan 22, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/0404
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved trench drain filter and modular system therefor for intercepting and treating run off water in a trench drain before discharge into a drainage system. The filter elements include a perforated pipe covered with one or more layers of geotextile material, which is, in turn, covered with a permeable fabric membrane. In a preferred embodiment a pouch containing an absorbent agent is disposed within the pipe upstream of the discharge point, and in another embodiment a multi-filter modular unit is provided, the unit including a plurality of filter elements disposed in an enclosure having fluid flow control baffles to direct fluid to and through the filter elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.