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1. 发明授权

US6085601A Particle preconcentrator 有权
标题翻译：粒子预浓缩器
公开(公告)号：US6085601A
公开(公告)日：2000-07-11
申请号：US170865
申请日：1998-10-13
申请人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
发明人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
IPC分类号： G01N1/00 , G01N1/22 , G01N1/28 , G01N1/40
CPC分类号： G01N1/40 , G01N1/2273 , G01N1/2205 , G01N1/4077 , G01N2001/022
摘要： An apparatus and method for preconcentrating particles and vapors. The preconcentrator apparatus permits detection of highly diluted amounts of particles in a main gas stream, such as a stream of ambient air. A main gas stream having airborne particles entrained therein is passed through a pervious screen. The particles accumulate upon the screen, as the screen acts as a sort of selective particle filter. The flow of the main gas stream is then interrupted by diaphragm shutter valves, whereupon a cross-flow of carrier gas stream is blown parallel past the faces of the screen to dislodge the accumulated particles and carry them to a particle or vapor detector, such as an ion mobility spectrometer. The screen may be heated, such as by passing an electrical current there through, to promote desorption of particles therefrom during the flow of the carrier gas. Various types of screens are disclosed. The apparatus and method of the invention may find particular utility in the fields of narcotics, explosives detection and chemical agents.
摘要翻译：预浓缩颗粒和蒸汽的装置和方法。预浓缩器装置允许检测主气流中高度稀释量的颗粒，例如环境空气流。携带有空气中的颗粒的主要气流通过透过性筛网。当屏幕作为一种选择性粒子滤波器时，颗粒聚集在屏幕上。主气流的流动然后被隔膜快门阀中断，由此载气流的交叉流平行于屏幕的表面吹出以排出积聚的颗粒并将其携带到颗粒或蒸气检测器，例如离子迁移谱仪。屏幕可以被加热，例如通过其中的电流通过，以在载气流动期间促进颗粒从其中的解吸附。公开了各种类型的屏幕。本发明的装置和方法可以在麻醉剂，爆炸物检测和化学试剂领域中特别有用。

2. 发明授权

US5854431A Particle preconcentrator 失效
公开(公告)号：US5854431A
公开(公告)日：1998-12-29
申请号：US988542
申请日：1997-12-10
申请人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
发明人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
IPC分类号： G01N1/00 , G01N1/22 , G01N1/28 , G01N1/40
CPC分类号： G01N1/40 , G01N1/2273 , G01N1/2205 , G01N1/4077 , G01N2001/022
摘要： An apparatus and method for preconcentrating particles and vapors. The preconcentrator apparatus permits detection of highly diluted amounts of particles in a main gas stream, such as a stream of ambient air. A main gas stream having airborne particles entrained therein is passed through a pervious screen. The particles accumulate upon the screen, as the screen acts as a sort of selective particle filter. The flow of the main gas stream is then interrupted by diaphragm shutter valves, whereupon a cross-flow of carrier gas stream is blown parallel past the faces of the screen to dislodge the accumulated particles and carry them to a particle or vapor detector, such as an ion mobility spectrometer. The screen may be heated, such as by passing an electrical current there through, to promote desorption of particles therefrom during the flow of the carrier gas. Various types of screens are disclosed. The apparatus and method of the invention may find particular utility in the fields of narcotics, explosives detection and chemical agents.

3. 再颁专利

USRE38797E1 Particle preconcentrator 有权
标题翻译：粒子预浓缩器
公开(公告)号：USRE38797E1
公开(公告)日：2005-09-20
申请号：US10189093
申请日：2002-07-03
申请人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
发明人： Kevin L. Linker , Frank J. Conrad , Chad A. Custer , Charles L. Rhykerd, Jr.
IPC分类号： G01N1/00 , G01N1/22 , G01N1/28 , G01N1/40
CPC分类号： G01N1/40 , G01N1/2205 , G01N1/2273 , G01N1/4077 , G01N2001/022
摘要： An apparatus and method for preconcentrating particles and vapors. The preconcentrator apparatus permits detection of highly diluted amounts of particles in a main gas stream, such as a stream of ambient air. A main gas stream having airborne particles entrained therein is passed through a pervious screen. The particles accumulate upon the screen, as the screen acts as a sort of selective particle filter. The flow of the main gas stream is then interrupted by diaphragm shutter valves, whereupon a cross-flow of carrier gas stream is blown parallel past the faces of the screen to dislodge the accumulated particles and carry them to a particle or vapor detector, such as an ion mobility spectrometer. The screen may be heated, such as by passing an electrical current there through, to promote desorption of particles therefrom during the flow of the carrier gas. Various types of screens are disclosed. The apparatus and method of the invention may find particular utility in the fields of narcotics, explosives detection and chemical agents.
摘要翻译：预浓缩颗粒和蒸汽的装置和方法。预浓缩器装置允许检测主气流中高度稀释量的颗粒，例如环境空气流。携带有空气中的颗粒的主要气流通过透过性筛网。当屏幕作为一种选择性粒子滤波器时，颗粒聚集在屏幕上。主气流的流动然后被隔膜快门阀中断，由此载气流的交叉流平行于屏幕的表面吹出以排出积聚的颗粒并将其携带到颗粒或蒸气检测器，例如离子迁移谱仪。屏幕可以被加热，例如通过其中的电流通过，以在载气流动期间促进颗粒从其中的解吸附。公开了各种类型的屏幕。本发明的装置和方法可以在麻醉剂，爆炸物检测和化学试剂领域中特别有用。

4. 发明授权

US06523393B1 Human portable preconcentrator system 有权
标题翻译：人类便携式预收敛系统
公开(公告)号：US06523393B1
公开(公告)日：2003-02-25
申请号：US09339349
申请日：1999-06-23
申请人： Kevin L. Linker , Francis A. Bouchier , David W. Hannum , Charles L. Rhykerd, Jr.
发明人： Kevin L. Linker , Francis A. Bouchier , David W. Hannum , Charles L. Rhykerd, Jr.
IPC分类号： B01D5944
CPC分类号： G01N1/24 , G01N1/40 , G01N1/405 , G01N21/76 , G01N2001/022 , G01N2015/0662
摘要： A preconcentrator system and apparatus suited to human portable use wherein sample potentially containing a target chemical substance is drawn into a chamber and through a pervious screen. The screen is adapted to capture target chemicals and then, upon heating, to release those chemicals into the chamber. Chemicals captured and then released in this fashion are then carried to a portable chemical detection device such as a portable ion mobility spectrometer. In the preferred embodiment, the means for drawing sample into the chamber comprises a reversible fan which, when operated in reverse direction, creates a backpressure that facilitates evolution of captured target chemicals into the chamber when the screen is heated.
摘要翻译：一种适用于人体便携式使用的预浓缩器系统和装置，其中潜在地含有目标化学物质的样品被吸入室中并通过透过屏。屏幕适用于捕获目标化学物质，然后在加热时将这些化学物质释放到室内。然后以这种方式捕获然后释放的化学品被携带到诸如便携式离子迁移谱仪的便携式化学检测装置。在优选实施例中，用于将样品抽入腔室的装置包括可逆风扇，其在相反方向操作时产生背压，其有利于当加热筛网时捕获的目标化学物质进入腔室。

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