Method and apparatus for porting lateral connections in lined pipelines
US5318395A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/304424
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for porting lateral connections in a lined pipeline from the lateral side of the liner. An access hole is formed through the liner material covering the lateral connection. A cutting apparatus, such as a water cutter, is inserted through the access hole with the nozzle directed back towards the liner. Alternatively, the cutting apparatus can be fed through the lateral towards the lined opening. The inside surface of the lateral pipe is then used as a guide to aim the water jet at the precise location where the cut is desired as the nozzle is revolved around the inside surface of the lateral to cut the liner to the shape of the connection opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.