Micro-machined virtual impactor and method of operation
US6010554A · kind A · utility
31Cited by
37References
30Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A micro-machined virtual impactor device to permit the separation, collection and concentration of a significant portion of environmental particulates having a diameter of less than ten microns and its method of operation. The device includes a plurality of projections, each having a virtual impact surface that defines an aperture in a stagnant zone of fluid flow. A major portion of the particulate material is concentrated into a minor portion of the fluid which is processed through the aperture, where it is collected for subsequent analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.