Cleaning pig with debris flushing action
US4720884A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/0553
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cleaning pig for use in a pipeline to be moved through the pipeline by the flow of fluid therethrough, the pig being formed of a cylindrical body having shallow depth channels formed in paralleled spiral patterns on the cylindrical surface, and an elongated, narrow, brush member positioned in each of the channels, each of the brush members having bristles which extend generally radially outward from the pig body, the width of the brush members being less than the width of the channels providing fluid flow passageways within each of the channels permitting fluid to flow past the pig as it is moved through a pipeline to thereby flush debris which has been brushed from the pipeline sidewall forwardly of the pig so that the debris will be carried out of the pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.