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    Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump
    1.
    发明授权
    Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump 有权
    用于检测泵中气体的存在并防止气体从泵泵送的方法和系统

    公开(公告)号：US06302653B1

    公开(公告)日：2001-10-16

    申请号：US09357615

    申请日：1999-07-20

    申请人： Robert J. Bryant ,  Lawrence B. Gray ,  Geoff P. Spencer

    发明人： Robert J. Bryant ,  Lawrence B. Gray ,  Geoff P. Spencer

    IPC分类号： F04B908

    CPC分类号： F04B51/00 ,  F04B2205/503

    摘要： A method and system are disclosed for detecting the presence of a gas in a pump chamber of a pumping system. The methods, and systems employing the methods, involve isolating a pump chamber from its surroundings, for example by closing an inlet and outlet valve on lines to and from the chamber, and determining the volume of the pump chamber with a force applied to a moveable or flexible surface of the pump chamber. The volume of the pump chamber is then redetermined in a similar fashion but with a second, different level of force applied to the surface of the pump chamber. The volumes thus determined can then be compared to detect the presence of a gas in the pump chamber.

    摘要翻译： 公开了一种用于检测在泵送系统的泵室中存在气体的方法和系统。 采用这些方法的方法和系统涉及将泵室与其周围隔离，例如通过在通向和离开室的管线上关闭入口和出口阀，并且以施加到可移动的方式确定泵室的体积 或泵室的柔性表面。 然后以类似的方式重新确定泵室的体积，但是具有施加到泵室表面的第二不同水平的力。 然后可以比较如此确定的容积以检测泵室中的气体的存在。

    Systems for determining the volume of a volumetric chamber and pumping a fluid with a pump chamber
    5.
    发明授权
    Systems for determining the volume of a volumetric chamber and pumping a fluid with a pump chamber 有权
    用于确定容积室的体积并用泵室泵送流体的系统

    公开(公告)号：US06485263B1

    公开(公告)日：2002-11-26

    申请号：US09357678

    申请日：1999-07-20

    申请人： Robert J. Bryant ,  Larry B. Gray ,  Geoff P. Spencer

    发明人： Robert J. Bryant ,  Larry B. Gray ,  Geoff P. Spencer

    IPC分类号： F04B908

    CPC分类号： F04B51/00 ,  F04B43/0081 ,  F04B43/067 ,  Y10T137/0396

    摘要： Reusable pump drive systems are disclosed that utilize pressurized fluids for creating a force on a flexible or moveable surface of a pump chamber of a pumping cartridge. One such system includes a variable sized orifice valve included as part of a fluid supply system, which valve is able to selectively control a fluid pressure applied to the surface of a pump chamber. Other such systems include a switch valve, which is configured to select a first or second fluid supply source within the system for applying a desired pressure to the surface of a pump chamber.

    摘要翻译： 公开了可重复使用的泵驱动系统，其利用加压流体在泵筒的泵室的柔性或可移动表面上产生力。 一个这样的系统包括作为流体供应系统的一部分包括的可变尺寸的孔口阀，该阀能够选择性地控制施加到泵室的表面的流体压力。 其它这样的系统包括开关阀，其被配置为选择系统内的第一或第二流体供应源以将期望的压力施加到泵室的表面。