Scarifier for interior surface of pipeline
US6418947B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/051
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for scarifying an interior surface of a pipe both of round and non-round cross section. The apparatus, which has a nozzle for discharging fluid under pressure against the interior surface of the pipe, also has a vehicle moveable along an interior of the pipe in a direction substantially parallel to an axis of the pipe, a principal arm coupled to the vehicle and a scarifying assembly rotatably coupled to the principal arm having a fluid nozzle assembly with at least one fluid nozzle. The fluid nozzle assembly is operative to one of rotate and oscillate, one of the scarifying assembly and the principal arm being extendible to place the fluid nozzle at a location adjacent the interior surface of the pipe and operative, as the vehicle moves along the interior of said pipe, to remove contaminants and corrosion along a selected region along the interior surface of pipe. The selected region is of an area larger than an area that would be scarified by the nozzle if it were not rotating or oscillating, when the fluid from the fluid nozzle assembly is directed as a jet against the interior surface of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.