Spiral sampler
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United States of America Patent
Stats
-
Jan 9, 2001
Grant Date -
N/A
app pub date -
Feb 9, 1998
filing date -
May 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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