Method and apparatus for sealing the space between pipes and linings therefor
US4752511A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
When pipes are provided with comparatively rigid linings, the gaps which tend to appear between the pipe and the lining along the length thereof, and through which gaps gaseous type contents tend to escape, are sealed by providing between the pipe and the lining radially expandable sealing rings spaced along the length of the pipe, those rings compressing when the lining is in place and only partially expanding if the lining tends to separate from the pipe, thereby to provide a series of annular seals along the length of the pipe. The sealing rings may be positioned within the pipe before the lining is applied or may be initially secured to the lining and moved into place with the lining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.