Device comprising a valve for injecting grout around or inside a tubular pile driven into the ground
US4948301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Feb 21, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D7/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for injecting grout around a tubular pile driven into the ground. The tubular pile has a given diameter and is formed by a tubular wall of a given wall thickness defining the inside and outside of the tubular pile. A grout feed channel capable of being driven into the ground with the tubular pile is disposed inside the tubular wall having a diameter which is small relative to the diameter of the tubular pile. A check valve is connected to the grout feed channel at a position along the tubular wall and extends through the thickness of the tubular wall so as to communicate from the grout feed channel through the outside of the tubular wall. An injection device is inserted in the grout feed channel having one plug which is fitted in the grout feed channel and located above the check valve so as to inject grout under pressure through the injection device and the check valve to the outside of the tubular wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.