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1. 发明授权

US5741984A Method and apparatus for sample collection by a token 失效
标题翻译：用于通过令牌进行采样的方法和装置
公开(公告)号：US5741984A
公开(公告)日：1998-04-21
申请号：US734234
申请日：1996-10-21
申请人： Ludmila Danylewych-May , Frank J. Kuja , John Henry Davies
发明人： Ludmila Danylewych-May , Frank J. Kuja , John Henry Davies
IPC分类号： A61B10/00 , G01N1/00 , G01N1/02 , G01N1/22 , G01N1/34 , G01N35/00 , G01N1/04
CPC分类号： G01N1/02 , A61B10/0096 , A61B2010/0009 , G01N1/2214 , G01N1/405 , G01N2001/007 , G01N2001/022 , G01N2001/028 , G01N2035/00089
摘要： An apparatus for the collection of a chemical sample from the fingers of an individual for subsequent analytical analysis comprises a token having a base and a substrate on the base. The substrate defines an area such that when the token is removed from a token dispenser the fingers of the individual come into contact with the substrate. Sufficient force must be applied by the fingers of the individual to the substrate when the token is removed from the token dispenser that a chemical sample is transferred from the fingers of the individual to the substrate. The token is then presented for analysis. The substrate may be polytetrafluoroethylene or cotton. A token handler for use in association with the token and an analyzer is also disclosed. Additionally, a method of using the token to obtain a chemical sample from the fingers of an individual is disclosed.
摘要翻译：用于从个体的手指收集化学样品用于随后的分析分析的装置包括在基底上具有基底和基底的令牌。衬底限定了一个区域，使得当令牌从令牌分配器移除时，个体的指状物与衬底接触。当令牌从令牌分配器移除时，必须将个体的手指施加足够的力，使化学样品从个体的手指转移到基底。然后提供令牌进行分析。基材可以是聚四氟乙烯或棉。还公开了与令牌和分析器相关联使用的令牌处理程序。此外，公开了一种使用令牌从个体的手指获取化学样品的方法。

2. 发明授权

US5552600A Pressure stabilized ion mobility spectrometer 失效
标题翻译：压力稳定的离子迁移谱仪
公开(公告)号：US5552600A
公开(公告)日：1996-09-03
申请号：US477321
申请日：1995-06-07
申请人： John H. Davies , Ronald A. Jackson , Frank J. Kuja
发明人： John H. Davies , Ronald A. Jackson , Frank J. Kuja
IPC分类号： G01N27/64 , G01N33/22 , B01D59/44 , H01J49/40
CPC分类号： G01N27/622 , G01N33/22
摘要： The gas pressure in an ion mobility spectrometer is controlled to maintain near-constant pressure in the drift region by adjusting gas flows in response to a pressure transducer output. The pressure in the system may be referenced to ambient pressure. The increase in pressure stability achieved permits the expected drift times of target analytes to be determined much more accurately than otherwise, and thereby allows more specific detection parameters to be used. This in turn results in a significantly improved false alarm rate for the device.
摘要翻译：控制离子迁移谱仪中的气体压力，通过响应于压力传感器输出调节气体流量来控制漂移区域中的接近恒定的压力。系统中的压力可以参考环境压力。实现的压力稳定性的增加允许目标分析物的预期漂移时间比其它方式更准确地确定，从而允许使用更具体的检测参数。这又导致设备的误报率显着提高。

3. 发明授权

US5405781A Ion mobility spectrometer apparatus and method, incorporating air drying 失效
标题翻译：离子迁移光谱仪装置和方法，结合风干
公开(公告)号：US5405781A
公开(公告)日：1995-04-11
申请号：US124064
申请日：1993-09-21
申请人： John H. Davies , Frank J. Kuja , Sydney T. Wiles
发明人： John H. Davies , Frank J. Kuja , Sydney T. Wiles
IPC分类号： G01N27/64 , G01N33/00 , G01N33/22 , G01N35/08
CPC分类号： G01N27/622 , G01N33/0057 , Y10S436/807 , Y10T436/117497 , Y10T436/25125
摘要： An ion mobility spectrometer for detecting substances such as narcotics and explosives, has inlets for a sample gas and a drift gas. The gas can be ambient air, bottled air, or another gas source. To ensure accuracy and prevent drifting of analyte peaks, the air is dried. A two stage dryer is provided comprising a first dryer, preferably a dryer which chills the air and removes water by condensation. This removes the bulk of the water. The second dryer includes a suitable absorbent, and reduces the water content to around 1-10 .mu.g/L, i.e. a level which will not substantially affect the performance of the IMS apparatus. The first dryer substantially reduces the load on the second dryer, and enables an extended period of use before the absorbent material in the second dryer either needs to be replaced or regenerated. The increased stability of calibrant and analyte peak positions allows detection windows to be narrowed, resulting in significantly lower false alarm rates.
摘要翻译：用于检测物质如麻醉剂和爆炸物的离子迁移谱仪具有用于样品气体和漂移气体的入口。气体可以是环境空气，瓶装空气或另一种气体源。为了确保分析物峰的准确性和防止漂移，空气被干燥。提供两级干燥器，其包括第一干燥器，优选干燥器，其冷却空气并通过冷凝除去水。这样可以消除大部分的水分。第二干燥机包括合适的吸收剂，并且将水含量降低至约1-10μg/ L，即不会显着影响IMS装置的性能的水平。第一干燥器基本上减少了第二干燥器上的负荷，并且在第二干燥器内的吸收材料需要更换或再生之前能够延长使用时间。校准物和分析物峰位置的增加的稳定性允许检测窗口变窄，导致明显更低的误报率。

4. 发明授权

US5425263A Method for inspecting an article for concealed substances 失效
标题翻译：用于检查隐藏物品的物品的方法
公开(公告)号：US5425263A
公开(公告)日：1995-06-20
申请号：US69477
申请日：1993-06-01
申请人： John H. Davies , Frank J. Kuja
发明人： John H. Davies , Frank J. Kuja
IPC分类号： G01N1/02 , G01N1/22 , G01N35/00 , G01V9/00 , G01N25/14
CPC分类号： G01N1/2214 , G01V9/007 , G01N2001/024 , G01N2001/2223 , G01N35/00009
摘要： There is provided an assembly for preferentially separating and collecting particles that are gathered from the surface of an article such as an item of baggage. The assembly features an impactor and a suction anvil that is displaceable from a collection medium. The anvil is displaceable from the collection medium so that the medium may be removed and analyzed for traces of substances such as explosives or narcotics. There is also provided, in combination with the assembly, a vacuum head and conduit for gathering the particles and a suction unit for creating the suction force. The collection medium containing collected particles is moved from the impactor to an analyzer by a stage movement device. The analyzer includes an analysis unit, such as an Ion Mobility Spectrometer, and a displaceable heater anvil.
摘要翻译：提供了用于优先分离和收集从诸如行李物品的物品的表面收集的颗粒的组件。该组件具有可从收集介质移位的冲击器和吸砧。砧座可以从收集介质中移位，以便可以移除介质并分析痕量物质如爆炸物或麻醉剂。还提供了与组件结合的用于聚集颗粒的真空头和导管以及用于产生吸力的抽吸单元。含有收集颗粒的收集介质通过载物台移动装置从冲击器移动到分析器。分析仪包括分析单元，例如离子迁移率光谱仪和可置换的加热器砧座。

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