Underwater trencher with pipelaying guide
US4575280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1983 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Dec 16, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F5/109
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process and apparatus are provided for the simultaneous trenching and installation of submarine pipelines. The apparatus is based on a single unit which includes an excavating portion, an attached ditch sidewall retention shield, and a pipeline installation guide. The excavator creates a trench of a slightly larger cross section than required, the shield prevents the trench from closing due to the collapse of the sidewalls, and the pipe guide causes the pipeline to be deflected into that portion of the trench protected by the shield. The pipeline is fabricated on the surface of the sea or on floating ice, and is supported and guided to enter the forward portion of the shield by a stinger or other means, when required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.