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11 条记录 (耗时 0.016 秒)

    Active check valve having a moving magnet actuator
    2.
    发明授权
    Active check valve having a moving magnet actuator 有权

    公开(公告)号：US11821530B2

    公开(公告)日：2023-11-21

    申请号：US17569744

    申请日：2022-01-06

    申请人： Waters Technologies Corporation

    发明人： Sean Eric Anderson ,  Wade P. Leveille

    IPC分类号： F16K31/06 ,  F16K15/18

    CPC分类号： F16K15/1843 ,  F16K31/0665

    摘要： Described is an active check valve that uses electro-magnetic actuation for operation. The valve includes a plunger assembly having a magnet in a sealed internal volume. The plunger assembly further includes a plunger tip that extends from either a plunger assembly housing or a sealing member. Although the plunger assembly is disposed in the solvent flow, the magnet is not exposed to the solvent. When the valve is actuated, the plunger tip moves the sealing member to open or close the valve. Optionally, an arming force may be applied to the sealing member in advance of opening or closing to reduce the subsequent additional force necessary to move the sealing member during opening or closing, thereby improving the accuracy of the solvent composition in liquid chromatography system applications.

    PERISTALTIC PUMP HAVING TEMPERATURE-COMPENSATED VOLUMETRIC DELIVERY
    3.
    发明申请
    PERISTALTIC PUMP HAVING TEMPERATURE-COMPENSATED VOLUMETRIC DELIVERY 有权

    公开(公告)号：US20230028806A1

    公开(公告)日：2023-01-26

    申请号：US17865960

    申请日：2022-07-15

    申请人： Waters Technologies Corporation

    发明人： Timothy M. Raymond ,  Sean Eric Anderson

    IPC分类号： F04B43/00 ,  F04B43/12 ,  F04B49/20 ,  F04B49/06

    摘要： Described is a method for regulating a volume of liquid delivered by a peristaltic pump and a peristaltic pump system that can be used to perform the method. The method includes sensing an ambient temperature of the peristaltic pump. The peristaltic pump includes a pump motor. At least one of a motor speed and a motor operation duration is determined from the sensed temperature, a selected volume of liquid to be delivered and a predetermined correspondence of the motor speed to ambient temperature. The pump motor is operated at the determined motor speed or for the determined motor operation duration to deliver the selected volume of liquid from the peristaltic pump.

    ACTIVE CHECK VALVE HAVING A MOVING MAGNET ACTUATOR
    4.
    发明申请
    ACTIVE CHECK VALVE HAVING A MOVING MAGNET ACTUATOR 有权

    公开(公告)号：US20220221074A1

    公开(公告)日：2022-07-14

    申请号：US17569744

    申请日：2022-01-06

    申请人： Waters Technologies Corporation

    发明人： Sean Eric Anderson ,  Wade P. Leveille

    IPC分类号： F16K15/18 ,  F16K31/06

    摘要： Described is an active check valve that uses electro-magnetic actuation for operation. The valve includes a plunger assembly having a magnet in a sealed internal volume. The plunger assembly further includes a plunger tip that extends from either a plunger assembly housing or a sealing member. Although the plunger assembly is disposed in the solvent flow, the magnet is not exposed to the solvent. When the valve is actuated, the plunger tip moves the sealing member to open or close the valve. Optionally, an arming force may be applied to the sealing member in advance of opening or closing to reduce the subsequent additional force necessary to move the sealing member during opening or closing, thereby improving the accuracy of the solvent composition in liquid chromatography system applications.

    Continuous flow mixer
    7.
    发明授权
    Continuous flow mixer 有权

    公开(公告)号：US11821882B2

    公开(公告)日：2023-11-21

    申请号：US17481998

    申请日：2021-09-22

    申请人： Waters Technologies Corporation

    发明人： Sean Eric Anderson ,  Peter MacKinnon

    IPC分类号： G01N30/34 ,  G01N30/32

    CPC分类号： G01N30/34 ,  G01N30/32 ,  G01N2030/326 ,  G01N2030/347

    摘要： A continuous flow mixer for use in a chromatography system includes a first channel structure located between a mixer inlet and a mixer outlet. The first channel structure includes a first inlet branch, a second inlet branch, a plurality of outlet branches including at least a first outlet branch and a second outlet branch, a first plurality of branches splitting from the first inlet branch, each branch of the first plurality of branches connected to a different of the plurality of outlet branches, and a second plurality of branches splitting from the second inlet branch, each branch of the second plurality of branches connected to a different of the plurality of outlet branches. At least two branches of the first and second plurality of branches that are connected to the first outlet branch are offset in fluid residence time through the at least two branches.