Pig for use in cleaning the interior wall of a pipeline
US5384929A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1994 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Apr 14, 2014 |
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 of foam plastic material, the body having a cylindrical surface and the cylindrical surface having shallow depth channels formed in parallelled spiraled patterns. An elongated cleaning member is positioned in each of the channels. Each of the cleaning members has an integral substratum of a width less than the width of a channel and each of the cleaning members has integral upstanding spaced apart studs projecting from the substratum upper surface, the studs each having a top surface that extends above the pig body external cylindrical surface, the substratum lower surface being bonded to the cylindrical body. The upstanding studs each has a top surface to non-abrasively contact and clean the interior surface of a pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.