Storm drain anchored grate cover
US8002977B2 · kind B2 · utility
10Cited by
54References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jan 31, 2011 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/0404
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drain grate filter assembly having a filter sheet member, wedging anchors and mechanical fasteners, whereby the assembly is connected to a drain grate by inserting wedging anchors into the apertures of the grate, placing the filter sheet member atop the grate and inserting fasteners through the filter sheet member and into the wedging anchors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.