Leaching chamber having varying slotted wall thickness
US7396188B2 · kind B2 · utility
5Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Mar 12, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F1/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defines the slots may vary with slot elevation from the base, so that a perforated sidewall configuration is achieved which resists entry of surrounding soil. In one embodiment, the slotted sidewall has slots with all the same slot openings and the wall thickness decreases with elevation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.