Apparatus for sealing a pipeline
US4463597A · kind A · utility
15Cited by
24References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1983 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Feb 2, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and system for separating and sealing sections of a pipeline are disclosed. A spherical member is advanced by pressure along the interior of a pipeline to seat against a restraining member forming a pressure-tight seal. The advancing pressure may then be increased within the pipeline to monitor for leaks in the upstream section of the pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.