Apparatus and process for producing a stable beam of fine particles
US4911805A · kind A · utility
26Cited by
24References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1987 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | May 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S422/907
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus for controlling a flow of fine particles is provided which comprises a convergent-divergent nozzle in a flow path of the fine particles. The nozzle may be operated under an optimum expansion condition, and the differential coefficient of the streamline at the channel inside the nozzle varies continuously and is equal to zero at a throat portion of the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.