Pipe rehabilitation test mandrel
US6176644A · kind A · utility
0Cited by
18References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F2003/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rehabilitation system has been developed for cleaning, testing and slip lining pipe particularly sewer lines while in service. The system includes the use of equipment adapted for use on mobile vehicles to increase efficiency and mobility of the system. The cleaning system utilizes a specialized cleaning bucket that can be pulled from excavations and existing manholes. The testing and lining systems also utilize specialized test mandrels and pulling mandrels for the pipe liner that can be used with equipment operating, in part, from existing manholes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.