Polymeric gel system and use in hydrocarbon recovery
    3.
    发明授权
    Polymeric gel system and use in hydrocarbon recovery 失效
    聚合物凝胶体系,用于烃回收

    公开(公告)号:US07575057B2

    公开(公告)日:2009-08-18

    申请号:US12033098

    申请日:2008-02-19

    IPC分类号: E21B43/26 E21B43/16

    摘要: Coacervate gels having excellent shear viscosities and other properties are made with anionic or cationic polymers, a smaller amount of a surfactant having a charge opposite that of the polymer, and a hydrophobic alcohol. The Zeta Potential of the gel is maintained at an absolute value of at least 20. Optional gel promoting additives include betaines and amine oxides. A preferred gel comprises poly diallyl dimethyl ammonium chloride, a lesser amount of sodium lauryl sulfonate, and lauryl alcohol. The gels are particularly useful in well drilling fluids and well fracturing fluids.

    摘要翻译: 具有优异剪切粘度和其它性能的凝聚凝胶由阴离子或阳离子聚合物制成,较少量的具有与聚合物相反电荷的表面活性剂和疏水性醇。 凝胶的ζ电位保持在至少为20的绝对值。任选的促凝添加剂包括甜菜碱和氧化胺。 优选的凝胶包括聚二烯丙基二甲基氯化铵,较少量的月桂基磺酸钠和月桂醇。 凝胶在钻井液和井压裂液中特别有用。

    POLYMERIC GEL SYSTEM AND USE IN HYDROCARBON RECOVERY
    4.
    发明申请
    POLYMERIC GEL SYSTEM AND USE IN HYDROCARBON RECOVERY 失效
    聚合凝胶体系和在油气回收中的应用

    公开(公告)号:US20080202749A1

    公开(公告)日:2008-08-28

    申请号:US12033098

    申请日:2008-02-19

    IPC分类号: E21B43/267

    摘要: Coacervate gels having excellent shear viscosities and other properties are made with anionic or cationic polymers, a smaller amount of a surfactant having a charge opposite that of the polymer, and a hydrophobic alcohol. The Zeta Potential of the gel is maintained at an absolute value of at least 20. Optional gel promoting additives include betaines and amine oxides. A preferred gel comprises poly diallyl dimethyl ammonium chloride, a lesser amount of sodium lauryl sulfonate, and lauryl alcohol. The gels are particularly useful in well drilling fluids and well fracturing fluids.

    摘要翻译: 具有优异剪切粘度和其它性能的凝聚凝胶由阴离子或阳离子聚合物制成,较少量的具有与聚合物相反电荷的表面活性剂和疏水性醇。 凝胶的ζ电位保持在至少为20的绝对值。任选的促凝添加剂包括甜菜碱和氧化胺。 优选的凝胶包括聚二烯丙基二甲基氯化铵,较少量的月桂基磺酸钠和月桂醇。 凝胶在钻井液和井压裂液中特别有用。

    Modular joint barrier retainer assembly and method
    7.
    发明授权
    Modular joint barrier retainer assembly and method 有权
    模块式接头挡板组件及方法

    公开(公告)号:US09428904B2

    公开(公告)日:2016-08-30

    申请号:US14474632

    申请日:2014-09-02

    IPC分类号: E04B1/68 E04B1/74 E04B1/94

    摘要: A modular joint barrier retainer assembly, including: a barrier including one or more material layers; a retainer strip coupled to the barrier; and an anchor flange selectively coupled to the retainer strip at a first end of the anchor flange, wherein a second end of the anchor flange is configured to be selectively coupled to one or more of an expansion joint cover and a building substrate. The barrier is selectively disposed within an expansion joint or other gap of a building. The retainer strip is coupled to the barrier via one or more mechanical fasteners that are disposed through the one or more material layers and secured to the retainer strip. The anchor flange includes a hook portion that selectively engages a lip portion of the retainer strip. The anchor flange is selectively secured to the retainer strip via one or more mechanical fasteners.

    摘要翻译: 一种模块化关节屏障保持器组件,包括:包括一个或多个材料层的屏障; 连接到屏障的保持条; 以及在所述锚定凸缘的第一端处选择性地联接到所述保持器条的锚定凸缘,其中所述锚定凸缘的第二端被配置为选择性地联接到膨胀接头盖和建筑衬底中的一个或多个。 屏障选择性地设置在建筑物的膨胀节或其他间隙内。 保持器条经由一个或多个机械紧固件联接到阻挡件,该机械紧固件设置成穿过一个或多个材料层并固定到保持器条。 锚定凸缘包括选择性地接合保持器条的唇部的钩部。 锚定凸缘经由一个或多个机械紧固件选择性地固定到保持器条。

    Active braking electrical surgical instrument and method for braking such an instrument
    9.
    发明授权
    Active braking electrical surgical instrument and method for braking such an instrument 有权
    主动制动电气手术器械及其制作方法

    公开(公告)号:US08627993B2

    公开(公告)日:2014-01-14

    申请号:US12612525

    申请日:2009-11-04

    IPC分类号: A61B17/03

    摘要: An electrically powered surgical instrument includes a surgical end effector having a surgical procedure effecting actuation assembly. A handle is coupled with the end effector. An electric motor is disposed within a shell of the handle and has power terminals and a drive train actuating the assembly when the motor is supplied with power. A break-before-make power supply switch at the handle selectively controls supply of power to the motor. A post-termination braking circuit electrically short-circuits the power terminals when the switch does not supply power to the motor. A method for post-termination braking of an electrical motor utilizes the permanent magnetic field of the motor to counteract an inertia-induced over-stroke characteristic of the motor, drive train, and/or actuation assembly after powered operation by short-circuiting the still-spinning motor to create an electrically generated magnetic field in opposition to the permanent magnetic field upon ceasing supply of power to the motor.

    摘要翻译: 电动外科器械包括具有影响致动组件的手术过程的手术末端执行器。 手柄与末端执行器相连。 电动机设置在手柄的壳体内,并且当电动机被供电时具有动力端子和驱动组件的驱动系统。 手柄上的断开电源开关可选择性地控制电机的电源供应。 当开关不向电机供电时,终端后制动电路使电源端子电短路。 一种用于电动马达的终端后制动的方法利用电动机的永久磁场,通过使静止电动机短路来抵消动力操作之后电动机,传动系和/或致动组件的惯性引起的超行程特性 在停止向电动机供电时产生与永久磁场相对的电产生的磁场。

    Surgical stapling and cutting device and method for using the device
    10.
    发明授权
    Surgical stapling and cutting device and method for using the device 有权
    手术装订和切割装置及其使用方法

    公开(公告)号:US08579176B2

    公开(公告)日:2013-11-12

    申请号:US11491626

    申请日:2006-07-24

    IPC分类号: A61B17/068

    摘要: A medical device includes a control handle having an articulation joint actuator, a surgical end effector, and a passive articulating joint connecting the end effector to the control handle. The articulation joint actuator, when unactuated, holds the passive articulation joint and, thereby, the end effector, in a substantially fixed articulation position, and, when actuated, releases the passive articulation joint into a freely articulating state to permit free articulation of the end effector with respect to the control handle dependent upon external forces acting upon the end effector. A method for operating the end effector includes retaining the passive articulation joint in a stable position with an articulation lock and actuating a release of the articulation lock to unlock the passive articulation joint and, thereby, permit articulating motion of the end effector through the passive articulation joint dependent upon the external forces acting upon the end effector.

    摘要翻译: 医疗装置包括具有关节运动关节致动器,手术末端执行器和将末端执行器连接到控制手柄的被动关节运动关节的控制手柄。 关节运动关节致动器在未致动时将被动铰接接头以及由此的端部执行器保持在基本上固定的关节位置,并且当被致动时,被动铰接接头释放到自由铰接状态,以允许端部自由铰接 相对于控制手柄的效应器取决于作用在末端执行器上的外力。 用于操作末端执行器的方法包括将被动关节关节保持在具有关节运动锁定的稳定位置,并且致动释放关节运动锁以解锁被动关节运动关节,从而允许末端执行器通过被动关节运动 关节取决于作用在末端执行器上的外力。