Passive sampling of airborne particles with the aid of natural air flow
US11371916B1 · kind B1 · utility
0Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Sep 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2288
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for passive sampling of airborne particles such as those found in an aerosol is disclosed. The passive sampler is designed to take advantage of natural air flow to collect airborne particles, such as those contained in an aerosol, for subsequent analysis. The passive sampler increases the sampling efficiency for diffusion and electrostatic collection of particles by using natural airflow or movement to bring particles closer to the deposition surface. Alternately charged electret filters further increase the sampling efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.