Method of nondestructive tightness testing based on gas discharge visualization
    12.
    发明授权
    Method of nondestructive tightness testing based on gas discharge visualization 失效
    基于气体放电可视化的非破坏性密封性测试方法

    公开(公告)号:US07498817B2

    公开(公告)日:2009-03-03

    申请号:US10897551

    申请日:2004-07-23

    CPC classification number: G01M3/40

    Abstract: A method of nondestructive noncontact tightness testing of inner structure of articles based on gas discharge visualization includes the steps of providing a film for imaging on a dielectric plate and an electrode, the dielectric plate disposed on the electrode, and polarizing the dielectric plate by applying a series of high voltages pulses across the dielectric to provide a preliminary polarized dielectric plate. After the polarizing step, an article to be tested which has a multi-layer casing including an outer metallic layer is arranged on the film. The article is then subjected to a high voltage pulsed electric field by applying a high voltage electrical pulse between the electrode and the outer metallic layer and the electrode, wherein the pulsed electric field is combined with an electric field associated with the preliminary polarized dielectric plate triggers a gas discharge process. An image of the film is obtained on the film of an inner structure of the article based on the gas discharge process.

    Abstract translation: 基于气体放电可视化的物品内部结构的非破坏性非接触密封性测试方法包括以下步骤:在电介质板和电极上成像的薄膜,设置在电极上的电介质板,并通过施加 一系列在电介质上的高电压脉冲以提供初步极化电介质板。 在极化步骤之后,在膜上布置具有包括外部金属层的多层壳体的待测试物品。 然后通过在电极和外部金属层和电极之间施加高电压电脉冲来对该制品进行高压脉冲电场,其中脉冲电场与与预极化电介质板触发的电场相结合 气体放电过程。 基于气体放电处理,在物品的内部结构的膜上获得膜的图像。

    Method and apparatus for measuring conductivity of powder materials using eddy currents
    13.
    发明授权
    Method and apparatus for measuring conductivity of powder materials using eddy currents 失效
    使用涡流测量粉末材料的导电率的方法和装置

    公开(公告)号:US07288941B2

    公开(公告)日:2007-10-30

    申请号:US11244796

    申请日:2005-10-06

    Abstract: A method and related apparatus for non-contact measurement of electrical conductivity of powder-like materials using eddy currents includes the steps of placing a powder to be measured in a hollow dielectric sampling container, the sampling container disposed and freely axially moving within an outer dielectric housing. An eddy-current sensor including a winding is arranged on an outside surface of the housing. Current is forced in the winding to excite the powder to generate eddy currents. The introduced active resistance is measured at the eddy-current sensor and an electrical conductivity of the powder is determined using the measured active resistance. The powder is preferably vibration compacted and the density and electrical conductivity determined at a plurality of stages during the vibration compacting step.

    Abstract translation: 用于使用涡流非接触式测量粉末状材料的电导率的方法和相关装置包括以下步骤:将测量粉末放置在空心电介质取样容器中,所述取样容器在外电介质 住房。 包括绕组的涡流传感器布置在壳体的外表面上。 电流被迫在绕组中激发粉末产生涡流。 在涡电流传感器处测量引入的有源电阻,并使用所测量的有源电阻来确定粉末的电导率。 该粉末优选地被振动压实,并且在振动压实步骤期间在多个阶段确定密度和电导率。

    System And Method For Gait Synchronized Vibratory Stimulation Of The Feet
    15.
    发明申请
    System And Method For Gait Synchronized Vibratory Stimulation Of The Feet 审中-公开
    步态同步振动刺激的系统和方法

    公开(公告)号:US20070203435A1

    公开(公告)日:2007-08-30

    申请号:US10594407

    申请日:2005-03-28

    Applicant: Peter Novak

    Inventor: Peter Novak

    Abstract: A device and method for stimulating a foot of a subject based on ambulatory feedback can impact various characteristics of the subject's gait. The device may include a pressure sensor, a switch or controller, and a vibrational stimulator. The switch or controller actuates the stimulator based on feedback from the pressure sensor. The controller can include algorithms to provide stimulation based on the pressure sensor input, as well as record data related to characteristics such as step or stride interval, step characteristics and other ambulatory-related information.

    Abstract translation: 基于动态反馈刺激受试者的脚的装置和方法可以影响受试者的步态的各种特征。 该装置可以包括压力传感器,开关或控制器以及振动刺激器。 开关或控制器根据压力传感器的反馈来启动刺激器。 控制器可以包括基于压力传感器输入提供刺激的算法,以及记录与诸如步距或步幅间隔,步进特征以及其他动态相关信息的特征相关的数据。

    Method and apparatus for cold-starting a PEM fuel cell (PEMFC), and PEM fuel cell system
    17.
    发明申请
    Method and apparatus for cold-starting a PEM fuel cell (PEMFC), and PEM fuel cell system 审中-公开
    用于冷启动PEM燃料电池(PEMFC)和PEM燃料电池系统的方法和装置

    公开(公告)号:US20050227126A1

    公开(公告)日:2005-10-13

    申请号:US11101903

    申请日:2005-04-08

    Abstract: A low temperature proton exchange membrane fuel cell (PEMFC) system can be efficiently started even when the system is at a temperature near or below freezing (0° C). The cold start procedure is accomplished through heating the fuel cell by filling an anode chamber with fuel (hydrogen or hydrogen-rich reactant gas) and generating hydrogen on a cathode. A defined amount of oxygen is supplied to the cathode chamber. The fuel cell system is locally heated up to defined temperature by the exothermic chemical reaction between hydrogen and oxygen on a cathode catalyst. Then the hydrogen generation on the cathode is canceled and oxygen is supplied to the cathode chamber in an amount sufficient to maintain the current flowing through an external load. This procedure provides plain saturation of the cathode with hydrogen and, as result, mild, safe and fast heating the fuel cell without use of additional external devices.

    Abstract translation: 即使系统处于接近或低于冰点(0℃)的温度,也可以有效地起动低温质子交换膜燃料电池(PEMFC)系统。 通过用燃料(氢或富氢反应气体)填充阳极室并在阴极上产生氢气来加热燃料电池来实现冷启动程序。 向阴极室供应限定量的氧气。 通过在阴极催化剂上的氢和氧之间的放热化学反应将燃料电池系统局部加热至定义的温度。 然后消除阴极上的氢气产生,氧气以足以保持电流流过外部负载的量向阴极室供应。 该方法提供阴极与氢气的平坦饱和,因此,温和,安全和快速地加热燃料电池而不使用额外的外部装置。

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