Method for lining of lateral pipelines with flow-through apparatus
US6001212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1996 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Mar 25, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/179
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for the installation of an inverted resin impregnated flexible tubular liner in a lateral passageway from a main passageway while permitting the flow of fluids through the main passageway during the installation process is provided. A cylindrical body with an opening to coincide with and interact with the lateral passageway has an expandable bladder on its outside with an opening coincident with the body opening and an elbow portion on the inside which is firmly attached at the opening. An air supply inflates the bladder. A tubular elbow is attached to a flexible hose at its proximal end, the hose having a gland for injecting fluid into the hose for inverting and curing the liner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.