In-situ barrier device with internal injection conduit
US11073017B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 10, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2300/0078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides a multi-layer barrier assembly or device for post-installation injection of a resin, grout, or other fluid. The barrier device comprises first and second layers defining an intermediate open-matrix layer, and at least one injection conduit member in parallel orientation with respect to the first and second layers and having openings for injecting fluid into the intermediate open-matrix layer. The injection conduit may be located between and in parallel orientation with respect to the first and second layers, along an edge of the first and/or second layers, along an outer face of the first layer (if the first layer is a woven or nonwoven fabric), or at any combination of these locations, to enable fluid to be conveyed into the intermediate open-matrix layer. The invention also provides for use of a gel activator within the barrier device cavity, such as pre-installed on open-matrix structure which used for separating the first and second layers of the barrier device, such that a highly flowable injection fluid can be introduced into the device, and its gelation or hardening will be initiated or accelerated by the presence of the gel activator. This wil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.