Effluent filtration tank
US8851317B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Nov 25, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D88/76
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A filtration tank intended to be buried and for containing wastewater in particular, the tank (100) comprising a casing (110) having an upper part (200) and a lower part (300), the tank being provided with voussoirs (610, 610′) for reinforcing the structure of the casing (110) so that it can withstand the pressure exerted by the surrounding material when the tank (100) is buried and is not completely filled. The voussoirs (610, 610′) bearing against the upper part (200) and in that the tank (100) incorporates means (650d, 670) for absorbing the supporting forces of the voussoirs (610, 610′) so as to transfer said forces onto the bottom (310) of said tank. A tank is thus obtained which withstands being buried without deforming even though it may be only partially filled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.