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    PASSIVE PUMPS FOR MICROFLUIDIC DEVICES
    1.
    发明申请
    PASSIVE PUMPS FOR MICROFLUIDIC DEVICES 审中-公开
    用于微流体设备的被动泵

    公开(公告)号：US20170065973A1

    公开(公告)日：2017-03-09

    申请号：US15074652

    申请日：2016-03-18

    申请人： North Carolina State University

    发明人： Brian M. Cummins ,  Frances Smith Ligler ,  Glenn Walker

    IPC分类号： B01L3/00 ,  F04F99/00

    CPC分类号： B01L3/50273 ,  B01L3/5023 ,  B01L3/502746 ,  B01L2200/027 ,  B01L2200/06 ,  B01L2200/12 ,  B01L2300/069 ,  B01L2300/0816 ,  B01L2300/087 ,  B01L2300/0883 ,  B01L2300/0887 ,  B01L2300/12 ,  B01L2300/126 ,  B01L2400/0406 ,  B01L2400/0457 ,  B01L2400/084 ,  F04B19/006 ,  F04B19/16 ,  F04B37/02 ,  F04B37/04 ,  F04F99/00 ,  F05B2280/50

    摘要： Provided herein are passive microfluidic pumps. The pumps can comprise a fluid inlet, an absorbent region, a resistive region fluidly connecting the fluid inlet and the absorbent region, and an evaporation barrier enclosing the resistive region, the absorbent region, or a combination thereof. The resistive region can comprise a first porous medium, and a fluidly non-conducting boundary defining a path for fluid flow through the first porous medium from the fluid inlet to the absorbent region. The absorbent region can comprise a fluidly non-conducting boundary defining a volume of a second porous medium sized to absorb a predetermined volume of fluid imbibed from the resistive region. The resistive region and the absorbent region can be configured to establish a capillary-driven fluid front advancing from the fluid inlet through the resistive region to the absorbent region when the fluid inlet is contacted with fluid.

    摘要翻译： 本文提供的是无源微流体泵。 泵可以包括流体入口，吸收区域，流体连接流体入口和吸收区域的电阻区域，以及包围电阻区域，吸收区域或其组合的蒸发屏障。 电阻区域可以包括第一多孔介质和流体非导电边界，其限定用于从流体入口到吸收区域的流体流过第一多孔介质的路径。 吸收区域可以包括流体非导电边界，限定一定体积的第二多孔介质体积，以吸收从电阻区域吸收的预定体积的流体。 电阻区域和吸收区域可以被配置为当流体入口与流体接触时，建立从流体入口通过电阻区域前进到毛细管驱动的流体前端到吸收区域。

    Drive head assembly for a fluid conveyor system
    2.
    发明授权
    Drive head assembly for a fluid conveyor system 有权
    用于流体输送系统的驱动头组件

    公开(公告)号：US08317012B2

    公开(公告)日：2012-11-27

    申请号：US13437593

    申请日：2012-04-02

    申请人： Jim Crafton

    发明人： Jim Crafton

    IPC分类号： E21B43/00

    CPC分类号： F04B19/16 ,  E21B43/121

    摘要： The invention disclosed provides a drive head assembly for a fluid conveyor system that propels a fluid entraining conveyor through a well bore to carry fluids to the surface. The invention is comprised of a pair of synchronized follower wheels connected to a set of counter rotating sheaves. A fluid entraining conveyor is wrapped in a “figure-8” conveyor path around the sheaves in a plurality of coaxial grooves and around a distal sheave located in the fluid in the well bore. The coaxial grooves incorporate a unique shape which in conjunction with the wrap pattern provide improved tractive qualities and thus reduce tension in the conveyor and increase the durability of the conveyor. The conveyor can run at increased speeds and with no tension on the downward portion of the conveyor resulting in higher efficiency and less down time due to breakage.

    摘要翻译： 所公开的发明提供了一种用于流体输送系统的驱动头组件，其驱动流体夹带输送机通过井眼将流体运送到表面。 本发明包括连接到一组反向旋转滑轮的一对同步的从动轮。 流体夹带输送机以多个同轴凹槽围绕滑轮缠绕在图8中的输送机路径中，并围绕位于井眼中的流体中的远侧滑轮缠绕。 同轴凹槽结合了独特的形状，其与包裹图案一起提供改进的牵引质量，从而减小输送机中的张力并增加输送机的耐久性。 输送机可以以增加的速度运行，并且在输送机的向下部分没有张力，导致更高的效率和由于断裂而减少的停机时间。

    Drive head for flexible conveyor fluid lifting system
    3.
    发明授权
    Drive head for flexible conveyor fluid lifting system 失效
    柔性输送机液压升降系统的驱动头

    公开(公告)号：US5381861A

    公开(公告)日：1995-01-17

    申请号：US192879

    申请日：1994-02-07

    申请人： James W. Crafton ,  Ronald J. Stene ,  Thomas Shilling ,  William J. Roper

    发明人： James W. Crafton ,  Ronald J. Stene ,  Thomas Shilling ,  William J. Roper

    IPC分类号： E21B19/22 ,  E21B43/12 ,  F04B19/14 ,  F04B19/16 ,  E21B43/00

    CPC分类号： E21B19/22 ,  E21B43/121 ,  F04B19/14 ,  F04B19/16

    摘要： An improved drive head for use in transporting materials has a frame for mounting near a tubing orifice, a drive wheel and second wheel rotatably mounted on the frame. Each of the wheels are adaptable to receive a fluid entraining conveyor. The drive head causes the conveyor to move through a predetermined conveyor path on which the conveyor winds about the drive wheel through at least a majority of its surface, and preferably 330.degree.. The radius of a down-conveyor conveyor track of the second wheel is preferably slightly greater than the radius of the drive wheel conveyor track. Preferably, tires are provided which are mounted on wheel hubs of the drive and second wheels, and these tires may be made of an elastomer having a higher coefficient of friction than the preferably plastic drive and second wheel hubs. The preferred embodiment includes a third wheel which is disposed on the conveyor path to be closer to the orifice than the second wheel.

    摘要翻译： 用于运输材料的改进的驱动头具有用于安装在管孔附近的框架，驱动轮和可旋转地安装在框架上的第二轮。 每个轮适合于接收流体夹带输送机。 驱动头使输送机移动通过预定的输送路径，输送机通过输送机的至少大部分表面，优选地在330°范围内绕驱动轮旋转。 优选地，第二轮的向下输送机输送机轨道的半径略大于驱动轮输送机轨道的半径。 优选地，提供安装在驱动器和第二轮的轮毂上的轮胎，并且这些轮胎可以由具有比优选的塑料驱动器和第二轮毂​​的摩擦系数高的弹性体制成。 优选实施例包括设置在输送路径上以比第二轮更靠近孔口的第三轮。