VARIABLE OUTPUT LIQUID CHROMATOGRAPHY PUMP DRIVE

    公开(公告)号:US20200088220A1

    公开(公告)日:2020-03-19

    申请号:US16573311

    申请日:2019-09-17

    Abstract: Disclosed is a liquid chromatography solvent pump including a motor, a first piston, a second piston, and a variable output drive system coupling the motor to at least one of the first piston and the second piston. The variable output drive system includes a gearbox configured to provide a non-equal ratio between an input from the motor and an output delivered to at least one of the first piston and the second piston. The first piston and the second piston are configured to deliver a flow of solvent in a liquid chromatography system.

    Spring-energized check valve
    25.
    发明授权

    公开(公告)号:US10465808B2

    公开(公告)日:2019-11-05

    申请号:US16323637

    申请日:2017-08-07

    Abstract: A check valve includes a first valve body having a chamber in which second and third valve bodies are located. The check valve also includes a spring-energized seal disposed in the chamber. The spring-energized seal includes a compliant seal body having an annular shape and a resilient member, such as a cantered spring or O-ring, disposed in a pocket of the seal body. The resilient member applies a force to portions of the seal body to prevent the passage of fluid from a valve inlet port to a valve outlet port unless the differential fluid exceeds the cracking pressure of the check valve.

    Establishing fluidic connections between chromatography components

    公开(公告)号:US12222339B2

    公开(公告)日:2025-02-11

    申请号:US18491132

    申请日:2023-10-20

    Abstract: A clamp assembly includes a rail extending along the length and configured to receive a first fluidic assembly, and a carriage movably attachable to the rail such that the carriage moves along the rail, the carriage configured to receive a second fluidic assembly, the carriage including an actuator and a stop mechanism. The stop mechanism is configured to selectively prevent and allow movement of the carriage relative to the rail. The stop mechanism is configured to be independently operable from the actuator assembly, and the actuator is configured: to move a chromatography column received by the clamp assembly relative to the rail to create a first fluid tight seal between the chromatography column and the first fluidic assembly, and move the second fluidic assembly relative to the carriage body to create a second fluid tight seal between the second fluidic assembly and the chromatography column.

    Chromatography column positioning assemblies

    公开(公告)号:US12181453B2

    公开(公告)日:2024-12-31

    申请号:US17512864

    申请日:2021-10-28

    Abstract: The exemplary embodiments provide chromatography column positioning assemblies that can ensure that the distance between face seals or other sealing surfaces/mechanisms at the respective ends of a liquid chromatography column is a desired distance (i.e., the length of the liquid chromatography column). The exemplary embodiments can adjust the separation between the face seals to accommodate different length liquid chromatography columns. For example, a chromatography column positioning assembly of an exemplary embodiment can set the distance between face seals to accommodate a 25 mm column, a 50 mm column or a 100 mm column.

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