Leaching chamber having sidewall with tenced louvers
US9809968B1 · kind B1 · utility
12Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Nov 3, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F1/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A corrugated thermoplastic leaching chamber has sidewall louvers that define sidewall slot openings. Each louver comprises an outward extending canopy, a cap integral with the outer end of the canopy, having a down slope greater than the slope of the canopy, and a preferably concave fence at the inner end of the canopy, for inhibiting ingress of soil. The chamber may be made by first thermoforming sheet material, preferably two-layer PET plastic sheet to the shape of the chamber, followed by mechanically cutting and deforming the sidewall, to create the opening and the fence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.