Measuring and testing – Sampler – sample handling – etc. – With heating or cooling
Patent
1988-11-18
1990-03-20
Raevis, Robert R.
Measuring and testing
Sampler, sample handling, etc.
With heating or cooling
7386383, G01N 114
Patent
active
049090895
ABSTRACT:
Disclosed is a walk-in inspection apparatus for active production of air samples containing vapors of explosives, drugs, or other substances carried by a person. The apparatus includes a U-shaped booth with an open end through which a person walks past walls which may contain a metal detector, then stands facing a vertical end wall. In the collection of an air sample a blower outside the booth sucks a large volume of air around the person and horizontally through a vertical array of shaped funnels in the end wall and through ducts connected to a collection manifold for subsequent analysis. Infrared heaters in the end wall heat the clothing and skin of the person during sampling, and many small nozzles extending through the end wall direct low volume, high momentum pulsed jets of puffs of air at the person to dislodge vapors, expel air from beneath clothing, and disrupt stagnant boundary layers of air near the person. Curved shapes of portions of the booth and funnels provide smooth, low loss airflow, and height and distance sensors facilitate automatic operation of the inspection apparatus.
REFERENCES:
patent: 3765842 (1973-10-01), Purt
patent: 3998101 (1976-12-01), Bradshaw
patent: 4045997 (1977-09-01), Showalter
patent: 4202200 (1980-05-01), Ellson
patent: 4718268 (1988-01-01), Reid et al.
patent: 4736637 (1988-04-01), Stock
patent: 4813984 (1989-03-01), Griffis
Lourence et al., "Flexible Bags Collect Gas Samples", Control Engineering, Sept. 1967, p. 105.
Spangler, G. E. et al., "Analysis of Explosives and Explosive Residues with Ion Mobility Spectrometer (IMS)", Mar. 29-31, 1983, pp. 267-282.
Achter Eugene K.
Burke Edward J.
Miskolczy Gabor
Sonin Ain A.
Messenger Herbert E.
Raevis Robert R.
Thermedics Inc.
LandOfFree
Walk-in inspection apparatus for producing air samples does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Walk-in inspection apparatus for producing air samples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Walk-in inspection apparatus for producing air samples will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-784483