Method and apparatus for forming discrete microcavities in a filament wire using microparticles
US7040130B2 · kind B2 · utility
6Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2003 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C3/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A microcavity forming device is provided for making microcavities in a tungsten wire. The microcavity forming device includes a source of particles; a housing for receiving a heated tungsten wire; and a plurality of jet nozzles disposed in the housing for spraying the particles toward the heated tungsten wire. The particles are 0.35–0.75 micron in diameter. The heated tungsten wire is received in the housing and the jet nozzles spray the particles toward the tungsten wire to form the microcavities in the tungsten wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.