Pipeline cleaning equipment
US4345350A · kind A · utility
14Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1981 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Mar 27, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/0553
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pig for the removal of ferromagnetic debris from the internal surface of a pipeline comprises a plurality of large area pole pieces of hard ferromagnetic material mounted on low reluctance spacers so that the spacing of poles of opposite polarity is approximately equal to the spacing of the pole pieces from the nominal position of the internal surface of the pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.