Leaching chamber having high leaching area to weight ratio
US7465122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Dec 16, 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 of the sidewall portion which defines the slots may vary with slot elevation from the base. The chambers are free of interior and exterior strengthening ribs. They provide high interior storage volume and high leaching area in combination with low mass or weight of plastic material. An exemplary 34 inch wide chamber has more than 1.5 cubic feet of water storage volume per foot, less than 4 pounds weight of thermoplastic material per foot, and at least 30 square inches of slot-provided leaching area per foot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.