Surface static reduction device
US6739530B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1999 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Oct 18, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05F3/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radioactive static eliminator gun has a cartridge (7) connected to a high pressure air supply (8). Within the cartridge (7) a radioactive source (6) which generates alpha particles is located coaxially along the central longituidinal axis. The alpha particles collide with the high pressure air stream passing through the cartridge thereby generating ions. With this arrangement the ion concentration is greatest at the core of the air stream which ensures that the greatest number of ions is delivered to the surface requiring static elimination. The radioactive static eliminator gun provides improved efficiency in removing static an is particularly suited to use in paint spraying of metal surfaces where the electrostatic forces at the surface of the metal may not be strong enough to attract ions in the air stream emerging from the gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.