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    • 2. 发明申请
    • Flow sensing apparatus
    • 流量检测装置
    • US20050109698A1
    • 2005-05-26
    • US10851497
    • 2004-05-21
    • Geoff GerhardtJoseph Luongo
    • Geoff GerhardtJoseph Luongo
    • G01F1/36G01F1/68G01N30/10G01N30/30G01N30/32B01D15/08
    • G01F1/68G01F1/363G01N30/10G01N30/30G01N30/32G01N2030/324G01N2030/326G05D11/132
    • A method and apparatus for monitoring and controlling the nano-scale flow rate of fluid in the operating flow path of a HPLC system. A first flow sensor is disposed in a first flow path between a first flow-divider and a fluidic tee. A second flow sensor is disposed in a second flow path between a second flow-divider and the fluidic tee. A first recycle flow restrictor is disposed in the first recycle flow path in fluid communication with the first flow-divider. A second recycle flow restrictor is disposed in the second The permeability of each recycle flow restrictor can be selected to produce a desired flow rate with each respective flow path. The output signals of the first and second flow sensors to control output of a pump within each flow path.
    • 一种用于监测和控制HPLC系统的操作流路中的流体的纳米流量的方法和装置。 第一流量传感器设置在第一分流器和流体三通之间的第一流动路径中。 第二流量传感器设置在第二分流器和流体三通之间的第二流动路径中。 第一再循环流量限制器设置在与第一分流器流体连通的第一再循环流动路径中。 第二再循环流量限制器设置在第二循环流量限制器中。可以选择每个循环流量限制器的渗透率,以产生每个相应流动路径的期望流量。 第一和第二流量传感器的输出信号以控制每个流动路径内的泵的输出。
    • 3. 发明申请
    • Methods and apparatus for determining the presence or absence of a fluid leak
    • 用于确定流体泄漏的存在或不存在的方法和装置
    • US20050147508A1
    • 2005-07-07
    • US10645082
    • 2003-08-21
    • Joseph LuongoSteven CiavarinniRobert TacconiFrank RubinoRobert Dumas
    • Joseph LuongoSteven CiavarinniRobert TacconiFrank RubinoRobert Dumas
    • F04B17/00F04B35/04F04B51/00
    • F04B51/00F04B2205/04F04B2205/05
    • Embodiments of the present invention feature a method and apparatus for detecting defects, such as, leaks, component failure and adverse performance. One embodiment of the present apparatus for pumping fluid comprises a pumping chamber having an inlet and an outlet powered by a motor. The motor operates in pumping mode upon receiving a pumping signal. The apparatus further comprises at least one inlet valve in fluid communication with the inlet of the pumping chamber. And, the apparatus comprises a switchable valve in fluid communication with the outlet of the pumping chamber. The switchable valve has a closed position and an open position, and assumes the closed position upon receiving a close signal. A pressure measuring device is in fluid communication with the pumping chamber, between said inlet valve and switchable valve. The pressure measuring device determines a minimal pressure and first threshold pressure at a first time and a second threshold pressure at a second time. The control means calculates the slope of a line representing the difference of said first threshold pressure signal and said second threshold pressure signal over time and comparing the slope with a threshold decay value. And, the control means compares the minimal pressure to a minimal acceptable value. Deviations from such values represent a defect in the pump.
    • 本发明的实施例的特征在于用于检测诸如泄漏,部件故障和不利性能之类的缺陷的方法和装置。 用于泵送流体的本装置的一个实施例包括具有由电动机供电的入口和出口的泵送室。 电机在接收到泵送信号时以泵送模式工作。 该装置还包括与泵送室的入口流体连通的至少一个入口阀。 并且,该装置包括与泵送室的出口流体连通的可切换阀。 可切换阀具有关闭位置和打开位置,并且在接收到闭合信号时处于关闭位置。 压力测量装置与所述抽吸室在所述入口阀和可切换阀之间流体连通。 压力测量装置在第一时间确定最小压力和第一阈值压力,并且在第二时间确定第二阈值压力。 控制装置计算表示所述第一阈值压力信号和所述第二阈值压力信号随时间的差的线的斜率,并将该斜率与阈值衰减值进行比较。 而且,控制装置将最小压力与最小可接受值进行比较。 与这些值的偏差代表了泵的缺陷。
    • 5. 发明申请
    • Device Having Seal Coatings for Receiving and Discharging Fluid
    • 具有用于接收和排出流体的密封涂层的装置
    • US20080020136A1
    • 2008-01-24
    • US10598031
    • 2005-03-02
    • Theodore CiolkoszPeter KirbyMark MoellerRussell KeeneDaniel McCormickCharles MurphyJoseph LuongoDavid FriswellTheodore Dourdeville
    • Theodore CiolkoszPeter KirbyMark MoellerRussell KeeneDaniel McCormickCharles MurphyJoseph LuongoDavid FriswellTheodore Dourdeville
    • F16K25/00
    • F16K15/04F04B53/1002G01N2030/326Y10T137/791Y10T137/7911Y10T137/7912
    • Embodiments of the present invention feature devices and methods for holding fluids at high pressures. One embodiment of the present invention features a device for receiving and discharging fluids. The device comprises a first housing having at least one side wall. The side wall has an interior surface defining at least one chamber and has at least one end cap abutment surface for receiving an end cap. The device has at least one end cap having at least one first housing abutment surface. The first housing abutment surface receives the end cap abutment surface positioning the end cap on the first housing for enclosing the chamber. At least one of the first housing abutment surface and the end cap abutment surface has first seal coating. The first seal coating comprises a deformable plastic adhering to the abutment surface. The device further comprises a fluid path means for receiving and removing fluid from the chamber. And, the device comprises compression means to compress the end cap, with the end cap abutment surface received on said first housing abutment surface, towards said first housing to deform said first seal coating and seal said chamber.
    • 本发明的实施例的特征在于在高压下保持流体的装置和方法。 本发明的一个实施例的特征在于用于接收和排出流体的装置。 该装置包括具有至少一个侧壁的第一壳体。 侧壁具有限定至少一个室的内表面,并且具有用于接收端盖的至少一个端盖邻接表面。 该装置具有至少一个具有至少一个第一壳体抵靠表面的端盖。 第一壳体邻接表面接收端盖邻接表面,将端盖定位在第一壳体上以封闭室。 第一壳体邻接表面和端盖邻接表面中的至少一个具有第一密封涂层。 第一密封涂层包括粘附到邻接表面的可变形塑料。 该装置还包括用于从腔室接收和去除流体的流体路径装置。 并且,该装置包括压缩装置,其压缩端盖,端盖抵接表面容纳在所述第一壳体抵接表面上,朝向所述第一壳体以使所述第一密封涂层变形并密封所述腔室。