System for reduction of dimensional end-taper in abrasive blasted tubes
US11654531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C7/0061
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
System for reduction of dimensional end-taper in abrasive blasted tubes has a pressurized chamber maintaining higher air pressure inside the chamber than atmospheric pressure, an air-exit port allowing gases to exit the chamber at a controlled rate, a valve restricting passage of gases from the air-exit port, a pressurized membrane through which the tube passes creating a seal, a gauge port where pressure inside the pressurized chamber is monitored and a media-exit port allowing evacuation of abrasive blast media particles after being expelled from the exit-end of the tube. The system addresses dimensional end-taper as high back pressure at the exit end of the tube reduces velocity of the gases and abrasive particles carried in it, thereby reducing erosion of the inner walls of the tube near its exit end. The system can be employed with a wide range of tube sizes and in combination with several abrasive blasting techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.