Method and apparatus for high pressure water treatment of the inside of a pipe section
US10478870B2 · kind B2 · utility
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41References
4Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Dec 19, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Material lining the inside surface of a section of pipe is removed by a hydrodemolition nozzle assembly mounted on a working end of an elongated boom. The opposed end of the boom is supported outside the pipe on a movable support for inserting and retracting the boom from the inside of the pipe. The nozzles remove the liner while the working end of the boom is supported by a wheel resting on the liner that has not yet been removed and that rolls along the inside liner as the pipe is made to revolve around the boom. The nozzles are oriented to eject the liner and water downstream and away from the boom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.