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    Fluid ejection and circulation
    1.
    发明授权
    Fluid ejection and circulation 有权

    公开(公告)号：US11667130B2

    公开(公告)日：2023-06-06

    申请号：US17416434

    申请日：2019-04-30

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Paul Mark Haines ,  Angela W. Bakkom ,  Anjan Prabhat Pattathil

    IPC: B41J2/18 ,  B41J2/175

    CPC classification number: B41J2/18 ,  B41J2/17513 ,  B41J2/17556 ,  B41J2/17563

    Abstract: A fluid ejection and circulation apparatus may include a fluid ejection device, a filter to filter fluid supplied to the fluid ejection device and a pressure regulator. The pressure regulator may include a fluid chamber having a fluid port and a first port extending from the fluid chamber to the filter. The pressure regulator may further include a valve to open and close the fluid port and a compliant chamber within the fluid chamber. The compliant chamber is to undergo different inflation levels in response to fluid chamber pressure. The valve is to open and close the fluid port in response to changes in an inflation level of the compliant chamber. The fluid chamber comprises a second port cooperating with the first port to form a circulation path through the fluid chamber that is directed away from the filter.

    FLUID CARTRIDGE
    2.
    发明申请
    FLUID CARTRIDGE 审中-公开

    公开(公告)号：US20200009874A1

    公开(公告)日：2020-01-09

    申请号：US16483289

    申请日：2017-02-10

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Paul Mark Haines ,  Aik Liang Roy Teh ,  Suriyaprakash Saravanan ,  Anjan Prabhat Pattathil

    IPC: B41J2/175

    Abstract: The subject matter discloses a fluid cartridge comprising a container to hold a predetermined volume of fluid, and a lid for closing the container. The lid comprises a valve-recess and an inlet valve in the valve-recess to transfer a volume of a replacement fluid in the container for replacing depleted volume of fluid in the container. A rocker valve is pivoted in the valve-recess to cover the inlet valve during a regulation phase. The rocker valve is to open the inlet valve during an actuation phase to allow the replacement fluid to enter the container. A spring element is movably disposed on the rocker valve to control actuation of the rocker valve for opening and closing the inlet valve. The spring element slides across the rocker valve, from a regulation zone of the rocker valve to an actuation zone of the rocker valve, to open the inlet valve.

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