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7 条记录 (耗时 0.02 秒)

    Fluorocarbon coating method
    1.
    发明授权
    Fluorocarbon coating method 失效
    氟碳涂层法

    公开(公告)号：US4961966A

    公开(公告)日：1990-10-09

    申请号：US477390

    申请日：1990-02-09

    申请人： Robert K. Stevens ,  Charles Stone

    发明人： Robert K. Stevens ,  Charles Stone

    IPC分类号： G01N1/22

    CPC分类号： G01N1/2208 ,  G01N2001/2223

    摘要： An inlet apparatus for gas-aerosol sampling comprises an elutriator column and an impactor member. The elutriator column comprises an inlet and an impact accelerator jet outlet, and the inner surface of the column is provided with a coating of polytetrafluoroethylene-containing polymer. The impactor member includes a housing which surrounds the impact accelerator jet outlet and an impactor surface arranged within the housing and opposite the impact accelerator jet outlet. The inner surface of the housing is also provided with a polytetrafluoroethylene-containing polymer coating.

    摘要翻译： 用于气溶胶取样的入口装置包括洗脱塔和冲击器构件。 洗脱塔包括入口和冲击加速器喷射出口，并且柱的内表面设置有含聚四氟乙烯的聚合物的涂层。 冲击器构件包括围绕冲击加速器喷射出口的壳体和布置在壳体内并与冲击加速器喷射出口相对的冲击器表面。 壳体的内表面还设有含聚四氟乙烯的聚合物涂层。

    Inlet apparatus for gas-aerosol sampling
    2.
    发明授权
    Inlet apparatus for gas-aerosol sampling 失效
    用于气溶胶取样的进气装置

    公开(公告)号：US4902318A

    公开(公告)日：1990-02-20

    申请号：US201242

    申请日：1988-05-25

    申请人： Robert K. Stevens ,  Charles Stone

    发明人： Robert K. Stevens ,  Charles Stone

    IPC分类号： G01N1/22

    CPC分类号： G01N1/2208 ,  G01N2001/2223

    摘要： An inlet apparatus for gas-aerosol sampling comprises an elutriator column and an impactor member. The elutriator column comprises an inlet and an impact accelerator jet outlet, and the inner surface of the column is provided with a coating of polytetrafluoroethylene-containing polymer. The impactor member includes a housing which surrounds the impact accelerator jet outlet and an impactor surface arranged within the housing and opposite the impact accelerator jet outlet. The inner surface of the housing is also provided with a polytetrafluoroethylene-containing polymer coating.

    摘要翻译： 用于气溶胶取样的入口装置包括洗脱塔和冲击器构件。 洗脱塔包括入口和冲击加速器喷射出口，并且柱的内表面设置有含聚四氟乙烯的聚合物的涂层。 冲击器构件包括围绕冲击加速器喷射出口的壳体和布置在壳体内并与冲击加速器喷射出口相对的冲击器表面。 壳体的内表面还设有含聚四氟乙烯的聚合物涂层。

    Flow meter with magnetoresistive sensors and method of measuring flow
    4.
    发明授权
    Flow meter with magnetoresistive sensors and method of measuring flow 有权
    具有磁阻传感器的流量计和测量流量的方法

    公开(公告)号：US07130750B1

    公开(公告)日：2006-10-31

    申请号：US11086049

    申请日：2005-03-22

    申请人： Robert K. Stevens ,  Jonathan Ray McClain ,  Richard Little

    发明人： Robert K. Stevens ,  Jonathan Ray McClain ,  Richard Little

    IPC分类号： G01F1/24

    CPC分类号： G01F1/24

    摘要： A variable area flow meter has a magnet carried by a piston which is moved to a position representing fluid flow. An array of magnetoresistive bridge sensors adjacent the path of magnet movement senses the magnet position. The bridges are unbalanced by the magnet field. The analog unbalance signals are read and processed in digital form to develop a flow signal. The flow meter circuits are powered from a 4–20 MA current loop or a remote power supply. Each bridge sensor is powered only when the bridge unbalance signal is being read, to minimize the power requirement.

    摘要翻译： 可变面积流量计具有由活塞承载的磁体，其被移动到表示流体流动的位置。 邻近磁铁移动路径的磁阻桥传感器阵列检测磁体位置。 桥梁由磁场不平衡。 以数字形式读取和处理模拟不平衡信号以形成流量信号。 流量计电路由4-20MA电流回路或远程电源供电。 每个桥式传感器仅在桥梁不平衡信号被读取时供电，以最大限度地降低功率需求。

    Sonic flow meter and method
    5.
    发明授权
    Sonic flow meter and method 有权
    声波流量计及方法

    公开(公告)号：US08019559B1

    公开(公告)日：2011-09-13

    申请号：US11807819

    申请日：2007-05-30

    申请人： Robert K. Stevens ,  Richard L. Little ,  William W. Roeber

    发明人： Robert K. Stevens ,  Richard L. Little ,  William W. Roeber

    IPC分类号： G01F1/66 ,  G06F17/40

    CPC分类号： G01F1/663 ,  G01F1/662 ,  G01F1/667 ,  G01F1/74 ,  G01F25/003

    摘要： A flow meter and method for measuring flow in liquids which may have entrained bubbles or foreign matter. The meter performs alternate transit time and Doppler measurements. The transit time measurements are used to calculate flow so long as they are successful. If the transit time measurements are not successful, the Doppler measurements are used.

    摘要翻译： 一种用于测量液体中流动的流量计和方法，其可能携带气泡或异物。 仪表执行交替运行时间和多普勒测量。 运输时间测量用于计算流量，只要它们成功。 如果通行时间测量不成功，则使用多普勒测量。

    Quantitative organic vapor-particle sampler
    6.
    发明授权
    Quantitative organic vapor-particle sampler 失效
    定量有机蒸气颗粒取样器

    公开(公告)号：US06780818B2

    公开(公告)日：2004-08-24

    申请号：US09832755

    申请日：2001-04-10

    申请人： Lara Gundel ,  Joan M. Daisey ,  Robert K. Stevens

    发明人： Lara Gundel ,  Joan M. Daisey ,  Robert K. Stevens

    IPC分类号： B01J2026

    CPC分类号： G01N1/40 ,  B01J20/26 ,  G01N1/2214 ,  G01N2001/4061 ,  Y10T29/49885

    摘要： The present invention concerns a quantitative organic vapor-particle sampler which can efficiently sample both semi-volatile organic gases and particulate components through the use of a unique sorbent resin coating and process. The sampler of the present invention comprises in its broadest aspect a tubular device having an inlet at one end through which organic vapor/particles are introduced, an outlet at the other end through which gases exit, at least one annular denuder interposed there between which is coated on the inside surface of the annulus with a specially prepared resin absorbent, which selectively absorbs organic vapors contained in the gases introduced into the inlet, and a filter which traps and collects particles. The invention further concerns a semi-volatile organic reversible gas sorbent for use in an integrated diffusion vapor-particle sampler comprising macroreticular resin agglomerates of randomly packed microspheres with the continuous porous structure of particles ranging in size between 0.05-10 &mgr;m.

    摘要翻译： 本发明涉及通过使用独特的吸附树脂涂层和方法可以有效地对半挥发性有机气体和颗粒组分进行采样的定量有机蒸气颗粒采样器。本发明的采样器在其最宽的方面包括管状装置 在其一端具有入口，通过该入口有机蒸汽/颗粒被引入，另一端的出口通过气体离开，至少一个环形分子插入其间，其中环状空隙涂覆在环的内表面上，并具有特别制备的树脂吸收剂 ，其选择性地吸收引入入口的气体中包含的有机蒸气，以及捕集和收集颗粒的过滤器。本发明还涉及用于包含大网络树脂附聚物的集成扩散蒸气颗粒取样器的半挥发性有机可逆气体吸附剂 的随机包装的微球与连续的多孔结构的颗粒 尺寸在0.05-10毫米之间。