Target detection portal
This invention relates to the field of detection apparatus, particularly for controlled or dangerous substances, and more particularly to chemical and explosive detection apparatus for screening persons or objects for the presence of trace amounts of target substances. A portal apparatus for screeni...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
01.01.2002
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Online Access | Get full text |
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Abstract | This invention relates to the field of detection apparatus, particularly for controlled or dangerous substances, and more particularly to chemical and explosive detection apparatus for screening persons or objects for the presence of trace amounts of target substances.
A portal apparatus for screening persons or objects for the presence of trace amounts of target substances such as explosives, narcotics, radioactive materials, and certain chemical materials. The portal apparatus can have a one-sided exhaust for an exhaust stream, an interior wall configuration with a concave-shape across a horizontal cross-section for each of two facing sides to result in improved airflow and reduced washout relative to a configuration with substantially flat parallel sides; air curtains to reduce washout; ionizing sprays to collect particles bound by static forces, as well as gas jet nozzles to dislodge particles bound by adhesion to the screened person or object. The portal apparatus can be included in a detection system with a preconcentrator and a detector. |
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AbstractList | This invention relates to the field of detection apparatus, particularly for controlled or dangerous substances, and more particularly to chemical and explosive detection apparatus for screening persons or objects for the presence of trace amounts of target substances.
A portal apparatus for screening persons or objects for the presence of trace amounts of target substances such as explosives, narcotics, radioactive materials, and certain chemical materials. The portal apparatus can have a one-sided exhaust for an exhaust stream, an interior wall configuration with a concave-shape across a horizontal cross-section for each of two facing sides to result in improved airflow and reduced washout relative to a configuration with substantially flat parallel sides; air curtains to reduce washout; ionizing sprays to collect particles bound by static forces, as well as gas jet nozzles to dislodge particles bound by adhesion to the screened person or object. The portal apparatus can be included in a detection system with a preconcentrator and a detector. |
Author | Brusseau, Charles A Linker, Kevin L |
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References | Showalter et al. (4045997) 19770900 ARTX Adjustable Air Saver Nozzles data sheet, Model 48009, p. 27, Not Dated. ARTX's Static Elimination data sheets, pp. 32-33, Model 55000 Ionizing Bar, pp. 34 and 36; Model 50006 Ionizing Nozzles, p. 38, Not Dated. Elloson (4202200) 19800500 Linker et al. (5914268) 19990600 Corrigan et al. (4987767) 19910100 Fritz (6058929) 20000500 Settles (6073499) 20000600 Arney et al. (4896547) 19900100 Johnson et al. (5827118) 19981000 |
References_xml | – year: 19900100 ident: 4896547 contributor: fullname: Arney et al. – year: 20000600 ident: 6073499 contributor: fullname: Settles – year: 20000500 ident: 6058929 contributor: fullname: Fritz – year: 19981000 ident: 5827118 contributor: fullname: Johnson et al. – year: 19800500 ident: 4202200 contributor: fullname: Elloson – year: 19910100 ident: 4987767 contributor: fullname: Corrigan et al. – year: 19990600 ident: 5914268 contributor: fullname: Linker et al. – year: 19770900 ident: 4045997 contributor: fullname: Showalter et al. |
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Snippet | This invention relates to the field of detection apparatus, particularly for controlled or dangerous substances, and more particularly to chemical and... |
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