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23 条记录 (耗时 0.026 秒)

    Oscillatory motion based measurement method and sensor for measuring wall shear stress due to fluid flow
    1.
    发明授权
    Oscillatory motion based measurement method and sensor for measuring wall shear stress due to fluid flow 失效
    基于振荡运动的测量方法和用于测量由于流体流动导致的壁剪切应力的传感器

    公开(公告)号：US07418876B2

    公开(公告)日：2008-09-02

    申请号：US10557999

    申请日：2004-05-20

    申请人： William D. Armstrong ,  Jonathan Naughton ,  William R. Lindberg

    发明人： William D. Armstrong ,  Jonathan Naughton ,  William R. Lindberg

    IPC分类号： G01N3/24

    CPC分类号： G01N3/24 ,  G01N13/02 ,  G01N2013/0216 ,  G01N2203/0005 ,  G01N2203/0025

    摘要： A shear stress sensor for measuring fluid wall shear stress on a test surface is provided. The wall shear stress sensor is comprised of an active sensing surface and a sensor body. An elastic mechanism mounted between the active sensing surface and the sensor body allows movement between the active sensing surface and the sensor body. A driving mechanism forces the shear stress sensor to oscillate. A measuring mechanism measures displacement of the active sensing surface relative to the sensor body. The sensor may be operated under periodic excitation where changes in the nature of the fluid properties or the fluid flow over the sensor measurably changes the amplitude or phase of the motion of the active sensing surface, or changes the force and power required from a control system in order to maintain constant motion. The device may be operated under non-periodic excitation where changes in the nature of the fluid properties or the fluid flow over the sensor change the transient motion of the active sensor surface or change the force and power required from a control system to maintain a specified transient motion of the active sensor surface.

    摘要翻译： 提供了一种用于测量测试表面上的流体壁剪切应力的剪切应力传感器。 壁剪切应力传感器由主动感测表面和传感器体构成。 安装在主动感测表面和传感器主体之间的弹性机构允许主动感测表面和传感器主体之间的移动。 驱动机构迫使剪切应力传感器振荡。 测量机构测量主动感测表面相对于传感器主体的位移。 传感器可以在周期性激励下操作，其中流体特性的性质或传感器上的流体流动的变化可测量地改变主动感测表面的运动的幅度或相位，或者改变控制系统所需的力和功率 以保持恒定运动。 该装置可以在非周期性激励下操作，其中流体性质的性质或者传感器上的流体流动的变化改变了主动传感器表面的瞬态运动，或改变了从控制系统所需的力和功率，以维持指定的 有源传感器表面的瞬态运动。

    Mixing system
    4.
    发明授权
    Mixing system 有权
    混合系统

    公开(公告)号：US07441652B2

    公开(公告)日：2008-10-28

    申请号：US11131121

    申请日：2005-05-17

    申请人： William D. Armstrong ,  Richard B. Sisken

    发明人： William D. Armstrong ,  Richard B. Sisken

    IPC分类号： B65D25/08 ,  B01F13/00 ,  B01F15/02

    CPC分类号： B01F13/04 ,  B01F11/0005 ,  B01F13/002 ,  B01F15/00506 ,  B01F15/00512 ,  B01F2215/0029

    摘要： A mixing system and method for forming bone cement by mixing liquid monomer methyl methacrylate (MMA) with a powder component comprising polymethyl methacrylate (PMMA). A container of MMA is received in a bag. The MMA is emptied from the container into the bag, and a syringe is connected to the bag in substantially leak-free manner to receive the MMA from the bag. The syringe is disconnected from the bag and thereafter connected to a receptacle housing the powder component. The MMA is then transferred into the receptacle in substantially leak-free manner.

    摘要翻译： 一种用于通过将液体单体甲基丙烯酸甲酯（MMA）与包含聚甲基丙烯酸甲酯（PMMA）的粉末组分混合来形成骨水泥的混合系统和方法。 MMA的容器被收纳在袋子中。 MMA从容器中排空到袋子中，并且注射器以基本上无泄漏的方式连接到袋子上以从袋子接收MMA。 注射器与袋分离，然后连接到容纳粉末成分的容器中。 然后将MMA以基本无泄漏的方式转移到容器中。

    Process for the oxidation of ethylene to ethylene oxide
    5.
    发明授权
    Process for the oxidation of ethylene to ethylene oxide 失效
    乙烯氧化成环氧乙烷的方法

    公开(公告)号：US4841080A

    公开(公告)日：1989-06-20

    申请号：US156212

    申请日：1988-02-16

    申请人： William D. Armstrong

    发明人： William D. Armstrong

    IPC分类号： B01J23/66 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  C07D301/10

    CPC分类号： C07D301/10 ,  B01J23/66 ,  B01J35/0026 ,  B01J35/023 ,  B01J35/1009 ,  B01J37/0205

    摘要： A supported silver catalyst for the oxidation of ethylene with molecular oxygen to ethylene oxide is made by depositing silver on a support capable of selectively adsorbing alkali metals, activating the silver under conditions chosen to provide the optimum selectivity of ethylene oxide and thereafter depositing an amount of an alkali metal sufficient to increase selectivity of the silver catalyst above its alkali-free state. The catalyst most preferably employs a ceramic support having a surface area of 0.3-0.8 m.sup.2 /gm. The amount of alkali metal on the finished catalyst is most preferably 50-300 ppm by weight. The catalyst may also include additional promoters, such as the alkaline earth metals, preferably barium.

    摘要翻译： 通过在能够选择性吸附碱金属的载体上沉积银，在选择的条件下活化银以提供环氧乙烷的最佳选择性，然后沉积一定量的 足以使银催化剂的选择性高于其无碱状态的碱金属。 催化剂最优选使用表面积为0.3-0.8m 2 / gm的陶瓷载体。 成品催化剂上的碱金属的量最优选为50-300重量ppm。 催化剂还可以包括另外的助催化剂，例如碱土金属，优选钡。

    Process for preparing a silver catalyst
    6.
    发明授权
    Process for preparing a silver catalyst 失效
    制备银催化剂的方法

    公开(公告)号：US4342667A

    公开(公告)日：1982-08-03

    申请号：US023575

    申请日：1979-03-26

    申请人： William D. Armstrong ,  Charles N. Winnick

    发明人： William D. Armstrong ,  Charles N. Winnick

    IPC分类号： B01J23/66 ,  C07D301/10 ,  B01J23/04 ,  B01J23/50

    CPC分类号： B01J23/66 ,  C07D301/10 ,  Y02P20/52

    摘要： A supported silver catalyst for oxidation of ethylene to ethylene oxide is prepared by impregnation of the support, activation, and solvent washing, with each step being carried out at a relatively low temperature. Silver so deposited has an average particle diameter of about 0.5-0.7 microns and is capable of being promoted by post-deposition of alkali metals such as cesium, rubidium, and potassium.

    摘要翻译： 通过浸渍载体，活化和溶剂洗涤来制备用于将乙烯氧化成环氧乙烷的负载型银催化剂，其中每个步骤在相对低的温度下进行。 如此沉积的银具有约0.5-0.7微米的平均粒径，并且能够通过后沉积诸如铯，铷和钾的碱金属来促进。

    Tamper-indicating closure with resilient locking projections
    7.
    发明授权
    Tamper-indicating closure with resilient locking projections 失效
    防弹指示封闭带弹性锁定突起

    公开(公告)号：US06729488B2

    公开(公告)日：2004-05-04

    申请号：US09971470

    申请日：2001-10-05

    申请人： Drew H. McNary ,  William D. Armstrong

    发明人： Drew H. McNary ,  William D. Armstrong

    IPC分类号： B65D4134

    CPC分类号： B65D41/3423 ,  B29C45/262 ,  B29C45/4407 ,  B29L2031/565 ,  Y10S425/058

    摘要： A method for manufacturing a tamper-indicating closure having a plurality of resilient flexible projections bent upwardly and radially inwardly at a predetermined radius of curvature. The first step in the method includes providing a mold assembly comprising a female mold portion for forming the outer surface of the closure and a male mold portion for forming the closure's inner surface and its plurality of projections. The male and female mold portions are arranged for relative movement toward and away from each other between a mold open position and a mold closed position. When in the mold closed position, the male and female mold portions define a mold cavity in which the tamper-indicating closure is molded. The next steps in the method are to move the male and female mold portions into the mold closed position; to provide a mold material into the mold cavity; and, to maintained the mold portions in the mold closed position for a predetermined time period until the tamper-indicating closure is formed with its projections disposed at their predetermined radius of curvature. Next, the male mold portion is removed from the molded closure, whereby the projections temporarily bend from their predetermined radius of curvature to a second position. The closure includes a plurality of strain relief recesses corresponding to the number of projections, each strain relief recess being located radially outwardly from each projection. Each recess, in combination with the predetermined radius of curvature, acting to limit the extent of deformation of the corresponding projection during removal of the male mold portion so the projection can elastically return to substantially its “as molded” configuration.

    摘要翻译： 一种用于制造具有多个以预定曲率半径向上且径向向内弯曲的多个弹性柔性凸起的防拆指示盖的方法。 该方法的第一步包括提供一种模具组件，其包括用于形成封闭件的外表面的阴模部分和用于形成封闭件的内表面的凸模部分及其多个突起。 阳模和阴模部分布置成在模具打开位置和模具关闭位置之间相对移动并相互移动。 当在模具关闭位置时，阳模和阴模部分限定了模具腔，模具中的防拆封闭件被模制。 该方法中的下一步是将阳模和阴模移动到模具关闭位置; 将模具材料提供到模腔中; 并且将模具部分保持在模具闭合位置预定的时间段，直到形成防拆指示闭合件，其突出部设置在其预定的曲率半径处。 接下来，将阳模部分从模制封闭件中取出，由此突起从其预定的曲率半径暂时弯曲到第二位置。 封闭件包括多个与突起数量对应的应变消除凹槽，每个应变消除凹槽位于每个突起的径向外侧。 每个凹部与预定的曲率半径结合起来，用于在移除阳模部分期间限制相应突起的变形程度，使得突起可以弹性地返回到基本上其“模制”构造。

    Self-powered fastener system
    8.
    发明授权
    Self-powered fastener system 失效

    公开(公告)号：US5544800A

    公开(公告)日：1996-08-13

    申请号：US450883

    申请日：1995-05-26

    申请人： William D. Armstrong

    发明人： William D. Armstrong

    IPC分类号： B25C1/02 ,  B25C1/08 ,  B25C1/16 ,  B25C1/10

    CPC分类号： B25C1/082 ,  B25C1/16 ,  Y10S411/923

    摘要： A zero stand-off tool and system for driving a powered fastener into a target work surface. A tool is provided having a reciprocable firing pin for detonating a power charge in a powered fastener supported within the tool. An exhaust gas chamber is provided in the tool for reducing noise. A powered fastener is provided having a receptacle end in which a nitrocellulose composition charge is mounted. The receptacle end has a cylindrical portion and a conical portion. The cooperation of the target work surface, the pointed end of the fastener, the fastener support portion of the tool, the firing pin and the shape of the receptacle end of the fastener serve to detonate the power charge and drive the fastener into the work surface.

    Concrete screw
    9.
    发明授权
    Concrete screw 失效
    混凝土螺丝

    公开(公告)号：US4842467A

    公开(公告)日：1989-06-27

    申请号：US118055

    申请日：1987-11-09

    申请人： William D. Armstrong

    发明人： William D. Armstrong

    IPC分类号： F16B25/00 ,  F16B35/04

    CPC分类号： F16B25/0026 ,  F16B25/0052 ,  F16B35/048

    摘要： A self-tapping screw for use on concrete and masonry structures is disclosed. The screw has a helically threaded shank of uniform diameter. The crest diameter of the helical thread on the shank has a taper which increases gradually from the tip or entering end of the shank for a predetermined distance along the shank and then has a uniform diameter over the remaining portion of the helical thread. The helical threads have a spacing of 5-8 threads per inch for screw sizes in the range of 1/2 to 3/16 inch. Thread cutting notches are formed in the threads over at least the tapered portion thereof. The screw is hardened to a Rockwell "C" hardness of 48 or greater.

    摘要翻译： 公开了一种用于混凝土和砖石结构的自攻螺钉。 螺钉具有均匀直径的螺旋螺纹柄。 柄上的螺旋螺纹的顶部直径具有锥形，该锥形从柄的尖端或入口端逐渐增加，沿着柄部预定距离，然后在螺旋形螺纹的剩余部分上具有均匀的直径。 螺旋螺纹的间距为每英寸5-8螺纹，螺钉尺寸范围为1/2至3/16英寸。 螺纹切口在至少其锥形部分上形成在螺纹中。 螺钉硬化至洛氏“C”硬度为48或更大。