Air sampler
US5500369A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hand-held portable sampler uses a vacuum to induce the flow of air into an air chamber and around a deflector plate mounted substantially transverse to the overall airflow pattern and with edges thereof close to the surface of nutrient material contained in culture containers between opposite sides of the enclosure and the deflector plate to define a constricted air passage. Particulates in the air are caused to impact the surface of nutrient material contained in culture containers as air is deflected through the constricted area. The venturi effect of the constricted area causes turbulence downstream to continue the process of impacting particulates in the nutrient material downstream from the constricted area of the air deflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.