Grooved impactor and inertial trap for sampling inhalable particulate matter
US4452068A · kind A · utility
26Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Feb 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.