Methods and systems for abrasive cleaning and barrier coating/sealing of pipes
US9555453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Dec 25, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/13
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods for abrasive cleaning, existing pipes before coating interior surfaces which extends the life of piping systems such as copper, steel, lead, brass, cast iron piping and composite materials. The method can include the steps of generating pressurized gas into pipes to generate a moving air stream, intermittently injecting separate spaced apart bursts of abrasive particles into the moving air stream with different cumulative amounts of the intermittent bursts of the abrasive particles that vary based on different piping diameters, cleaning interior wall surfaces of the pipes with the intermittent bursts of the particles, reducing at least one of burrs or interior lips in the interior wall surfaces of the pipes, with the intermittent bursts of the particles and removing abrasive particles and debris caused by each one of the separate burst shots of the abrasive particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.