Plasma cleaning device and process
US12408256B1 · kind B1 · utility
0Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2021 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jun 17, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/4697
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Atmospheric pressure plasma devices and methods for preparing the surfaces of fasteners, e.g. nutplates, for adhesive bonding are disclosed. A device supports a fastener to dispose a contact surface of the fastener to receive an atmospheric pressure plasma flow, thereby activating the contact surface to be bonded. A spacer is used to properly support the fastener to receive the plasma treatment. A spacer can comprise a plurality of standoffs on a showerhead port comprising a ground electrode of the plasma generator where plasma is formed in a gas flow across the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.