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    Peristaltic pump with roller pinch valve control
    51.
    发明申请
    Peristaltic pump with roller pinch valve control 有权
    蠕动泵带滚子夹紧阀控制

    公开(公告)号：US20050019185A1

    公开(公告)日：2005-01-27

    申请号：US10627459

    申请日：2003-07-25

    Applicant: David Otis

    Inventor： David Otis

    IPC: F04B43/12 ,  F04B43/08

    CPC classification number: F04B43/1292 ,  F04B43/1253 ,  F04B2201/1208

    Abstract: A pump having a rotary portion which compels the movement of a fluid by peristaltic compression of resilient tubing containing the fluid includes a roller assembly having at least one roller mounted in the rotary portion of the pump for contact with the resilient tubing. The roller has a range of rotation in contact with the tubing during pump operation. A roller control mechanism is adapted and constructed to stop the roller at a single, predetermined location on the tubing when the pump operation is stopped.

    Abstract translation: 一种具有旋转部分的泵，其通过蠕动压缩包含流体的弹性管的蠕动压缩来驱动流体的运动，包括具有安装在泵的旋转部分中的至少一个辊的辊组件，用于与弹性管接触。 在泵运行期间，辊具有与管道接触的旋转范围。 滚子控制机构被适配和构造成当泵操作停止时将滚子停在管道上的单个预定位置。

    Volumetric pump with bi-directional piston seal
    52.
    发明授权
    Volumetric pump with bi-directional piston seal 失效
    带双向活塞密封的容量泵

    公开(公告)号：US5931647A

    公开(公告)日：1999-08-03

    申请号：US786936

    申请日：1997-01-23

    Applicant: Stephen C. Jacobsen ,  Clark C. Davis

    Inventor： Stephen C. Jacobsen ,  Clark C. Davis

    IPC: F04B17/04 ,  A61M1/10 ,  A61M5/142 ,  F04B3/00 ,  F04B7/00 ,  F04B9/02 ,  F04B9/04 ,  F04B17/00 ,  F04B17/03 ,  F04B49/12 ,  F04B53/02 ,  F04B53/14 ,  F04B53/16 ,  F16K41/12 ,  H01F7/02 ,  F04B35/04

    CPC classification number: A61M5/142 ,  F04B17/00 ,  F04B17/03 ,  F04B49/12 ,  F04B53/02 ,  F04B53/164 ,  F04B7/0015 ,  F04B9/02 ,  F04B9/045 ,  F16K41/12 ,  F04B2201/1208 ,  F04B2205/05 ,  F05C2225/04

    Abstract: A volumetric pump for administering intravenous fluids to a patient comprises a housing having an elongate cavity therein with an open and a closed end. A resilient sheet of material having two branched portions which form a centrally-located aperture is disposed over the open end of the housing. A pump shaft is slidably disposed through the aperture such that one branched portion toward the cavity and the other branched portion extends away from the housing such that a sphincter seal is formed about the shaft. An inlet conduit leading from a fluid source such as an IV bag passes through the housing into the cavity near one end thereof, and an outlet conduit leading to a fluid sink such as a patient passes through the housing from the cavity near the other end thereof. The shaft is driven back and forth in reciprocating motion, inwardly and outwardly of the cavity, to alternately produce a positive pressure forcing fluid out of the outlet conduit to the fluid sink, and a negative pressure forcing fluid from the fluid source through the inlet conduit.

    Abstract translation: 用于向患者施用静脉内流体的体积泵包括其中具有开口和封闭端的细长腔的壳体。 具有形成中心定位的孔的具有两个分支部分的弹性片材布置在壳体的开口端上。 泵轴可滑动地设置穿过孔，使得朝向空腔的一个分支部分和另一分支部分远离壳体延伸，使得围绕轴形成括约肌密封。 从诸如IV袋的流体源引出的入口导管在其一端附近通过壳体进入空腔，并且通向诸如患者的流体槽的出口导管从其另一端附近的空腔穿过壳体 。 轴以往复运动，向内和向外的空腔来回往复运动，以交替地产生正向压力，迫使流体从出口导管流到流体槽，以及负压迫使流体从流体源通过入口导管 。

    Volumetric pump and value
    57.
    发明授权
    Volumetric pump and value 失效
    体积泵和值

    公开(公告)号：US5556263A

    公开(公告)日：1996-09-17

    申请号：US469473

    申请日：1995-06-06

    Applicant: Stephen C. Jacobsen ,  Clark C. Davis

    Inventor： Stephen C. Jacobsen ,  Clark C. Davis

    IPC: F04B17/04 ,  A61M5/142 ,  F04B3/00 ,  F04B7/00 ,  F04B9/02 ,  F04B9/04 ,  F04B17/00 ,  F04B17/03 ,  F04B49/12 ,  F04B53/02 ,  F04B53/16 ,  F16K41/12 ,  H01F7/02

    CPC classification number: A61M5/142 ,  F04B17/00 ,  F04B17/03 ,  F04B49/12 ,  F04B53/02 ,  F04B53/164 ,  F04B7/0015 ,  F04B9/02 ,  F04B9/045 ,  F16K41/12 ,  F04B2201/1208 ,  F04B2205/05 ,  F05C2225/04 ,  Y10T137/791 ,  Y10T137/86228 ,  Y10T137/86799 ,  Y10T137/86879 ,  Y10T137/87708

    Abstract: A volumetric pump and fluid control valve system for controlling the flow of fluid which comprises a housing containing an interior cavity, an elongated valve shaft is disposed inside the cavity, and an elongate drive shaft of smaller diameter than the valve shaft connected to one end of the valve shaft. The drive shaft passes through a passage formed in the housing to extend from the cavity to the exterior. A resilient sheet of material having an aperture is disposed in the housing on the exterior side of the passage and the drive shaft passes through the aperture to form a sphincter seal. The drive shaft can be used to move the valve shaft back and forth in a reciprocating motion producing positive and negative pressures causing fluid to flow or merely to stabilize the valve shaft in position. The valve shaft includes two flanges which are spaced apart from one another. The flanges extend at least partially around the circumference of the valve shaft. The drive shaft is disposed in the cavity above the valve shaft and substantially parallel thereto. A tab extends downwardly from the piston sufficiently far to abut either of the flanges when the piston is moved longitudinally a sufficient distance.

    Abstract translation: 一种用于控制流体流量的体积泵和流体控制阀系统，其包括容纳内腔的壳体，细长阀轴设置在腔体内部，以及细长的驱动轴，其直径小于连接到 阀轴。 驱动轴通过形成在壳体中的通道，以从空腔延伸到外部。 具有孔的弹性片材料在通道的外侧设置在壳体中，并且驱动轴穿过孔以形成括约肌密封。 驱动轴可用于以往复运动来回移动阀轴，产生正压和负压，导致流体流动或仅将阀轴稳定在适当位置。 阀轴包括彼此间隔开的两个凸缘。 凸缘至少部分地围绕阀轴的圆周延伸。 驱动轴设置在阀轴上方的空腔中并与其基本平行。 当活塞纵向移动足够的距离时，突片从活塞向下延伸足够远以抵靠任何一个凸缘。

    Pumping apparatus for delivering liquid at high pressure
    59.
    发明授权
    Pumping apparatus for delivering liquid at high pressure 失效
    用于在高压下输送液体的泵送装置

    公开(公告)号：US4883409A

    公开(公告)日：1989-11-28

    申请号：US246479

    申请日：1988-09-19

    Applicant: Fred Strohmeier ,  Klaus Witt

    Inventor： Fred Strohmeier ,  Klaus Witt

    IPC: G01N30/32 ,  F04B11/00 ,  F04B13/00 ,  F04B23/06 ,  F04B49/06 ,  F04B49/08 ,  F04B49/12 ,  F04B49/20 ,  F04C11/00 ,  G01N30/34

    CPC classification number: F04B49/20 ,  F04B11/00 ,  F04B11/0058 ,  F04B11/0075 ,  F04B49/065 ,  F04B49/12 ,  F04B2201/1208 ,  F04B2205/05 ,  F04B2207/041 ,  G01N2030/322 ,  G01N2030/324 ,  G01N2030/326 ,  G01N30/34

    Abstract: A pumping apparatus for delivering liquid at a high pressure, in particular for use in liquid chromatography, comprises two pistons (10, 20) which reciprocate in pump chambers (7,18), respectively. The output of the first pump chamber (7) is connected via a valve (13) to the input of the second pump chamber (18). The pistons are driven by linear drives (30,31), e.g., ball-screw spindles. The stroke volume displaced by the piston (10) is freely adjustable by corresponding control of the angle by which the shaft of the drive motor (36) is rotated during a stroke cycle. The control circuitry is operative to reduce the stroke volume when the flow rate which can be selected by user at the user interface (42) is reduced, thus leading to reduced pulsations in the outflow of the pumping apparatus. The pumping apparatus can also be used for generating solvent gradients when a mixing valve (2) connected to different solvent containers (A,B,C,D) is coupled to the input of the pumping apparatus (FIG. 1).

    Abstract translation: 用于在高压下输送液体，特别是用于液相色谱的泵送装置包括分别在泵室（7,18）中往复运动的两个活塞（10,20）。 第一泵室（7）的输出通过阀（13）连接到第二泵室（18）的输入端。 活塞由线性驱动器（30,31）驱动，例如滚珠丝杠。 由活塞（10）移动的冲程体积可以通过相应地控制驱动马达（36）的轴在行程循环期间旋转的角度来自由地调节。 当用户界面（42）可以选择的流量减小时，控制电路可以减小行程体积，从而导致泵送装置的流出中的脉动减小。 当连接到不同溶剂容器（A，B，C，D）的混合阀（2）连接到泵送装置（图1）的输入端时，泵送装置也可用于产生溶剂梯度。

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