Method for the cleaning of water mains
US5915395A · kind A · utility
48Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03B7/006
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of cleaning water mains includes isolating a section of water main. Compressed air is then used to blow out the water within the water main. The water main is actually cleaned by interspersing slugs of water between sections of compressed air. The compressed air includes atomized chlorine and a polyphosphate inhibitor. Once the water main has been cleaned, the flow of water is returned to the isolated section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.