Dense fluid spray cleaning method and apparatus
US5725154A · kind A · utility
34Cited by
10References
21Claims
0Family size
Inventor
Key dates
| Filing date | Aug 18, 1995 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Aug 18, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C5/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A spray gun for cleaning using a dense fluid such as CO.sub.2, provides snow pellets of controllable size and kinetic energy, the kinetic energy being at a significantly higher level than has heretofore been attainable. A heated or thermal ionized gas is passed at substantial pressure accelerates the snow particles with an enveloping stream of gas. Charge build-up both within the snow delivery tube and in the substrate region is minimized by the use of a grounding helix in the snow delivery tube, in conjunction with the thermal ionized gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.