Leaching chamber with continuous curve arch and closely spaced corrugations
US8297880B2 · kind B2 · utility
6Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2008 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F1/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for treating wastewater in a leaching field comprises forming and burying in soil a continuous curve arch shape cross section injection molded thermoplastic leaching chamber. The chamber has inwardly curving sidewalls perforated with closely spaced horizontal slots and peak corrugations which are closely spaced apart on about 8 inch center-to-center distance or less. The chamber configuration in combination with certain plastic material properties and thickness provide strength sufficient to meet regulatory requirements when the soil above the buried chamber is subjected to load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.