Spiral sampler
US6170342A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Feb 9, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Feb 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2276
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The SPIRAL SAMPLER is a sampler for airborne particles. The spiral groove in the sampler allows for sticky or liquid particles as well as solid or bouncy particles of any given aerodynamic diameter to be sampled with the same efficiency. The SPIRAL SAMPLER does not require any oil or grease, which may become dislodged during operation and contaminate the particle deposit. By varying the dimensions of the inlet tube and the spiral groove, as well as the number of turns of the spiral, samplers may be made for sampling at any desired flow rate and with chosen particle size cutoffs. The SPIRAL SAMPLER may be scaled to any size, from personal to an area sampler. For sampling in areas with high loadings of large particles, a particle trap may be used to effectively and compactly separate oversized particles which would adversely affect the sampler operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.