Run-off water filter for storm drains
US7438802B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jan 30, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A storm drain filter assembly that filters incoming drainage water and can prevent sediment, debris, and other undesirable materials (such as oil) from entering a storm drain's inlet. The frame can be rotated upwardly away from the road for street sweeping, and can also be detached from the curb and removed to a remote location for cleaning. The filter assembly comprises a filter panel including a bristle filter and a frame that holds the bristle filter, the bristle filter including a plurality of bristles. At least one seal is positioned between the filter panel and the surface to prevent leakage around the edges of the panel. A pivotable mount is provided for holding the filter panel in an operational position in the path of the flowing drainage water. In one embodiment the bristles are made of polypropylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.