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    Piston engaging with valve for self-priming in fluid sprayers
    2.
    发明授权
    Piston engaging with valve for self-priming in fluid sprayers 有权

    公开(公告)号：US10422325B2

    公开(公告)日：2019-09-24

    申请号：US15704649

    申请日：2017-09-14

    Applicant: Graco Minnesota Inc.

    Inventor： Mariusz J. Luczak

    IPC: F04B7/04 ,  F04B49/03 ,  F04B1/18 ,  F04B1/14 ,  F04B53/10 ,  F04B53/06 ,  B05B9/04 ,  B05B9/08 ,  F04B1/02 ,  F04B23/02 ,  F16K15/04

    Abstract: A pump draws fluid from a reservoir and drives the fluid downstream to a spray tip where the fluid is applied to a surface. A piston is driven in a reciprocating manner to pump the fluid. A check valve is disposed downstream of the piston to regulate a flow of the fluid downstream from the piston. The pump is initially dry and is primed with fluid prior to operation. To facilitate priming, the piston is dimensioned to impact the ball and unseat a valve member of the check valve during a priming stroke, thereby ejecting any air from the pump through the check valve. With the air ejected from the pump, a vacuum is formed during a suction stroke of the piston, which draws fluid downstream from the reservoir to prime the pump.

    PISTON-VALVE ENGAGEMENT IN FLUID SPRAYERS
    5.
    发明申请
    PISTON-VALVE ENGAGEMENT IN FLUID SPRAYERS 审中-公开

    公开(公告)号：US20180071761A1

    公开(公告)日：2018-03-15

    申请号：US15704649

    申请日：2017-09-14

    Applicant: Graco Minnesota Inc.

    Inventor： Mariusz J. Luczak

    IPC: B05B9/04 ,  B05B9/08 ,  F04B1/02 ,  F04B9/04 ,  F04B23/02 ,  F04B53/10

    Abstract: A pump draws fluid from a reservoir and drives the fluid downstream to a spray tip where the fluid is applied to a surface. A piston is driven in a reciprocating manner to pump the fluid. A check valve is disposed downstream of the piston to regulate a flow of the fluid downstream from the piston. The pump is initially dry and is primed with fluid prior to operation. To facilitate priming, the piston is dimensioned to impact the ball and unseat a valve member of the check valve during a priming stroke, thereby ejecting any air from the pump through the check valve. With the air ejected from the pump, a vacuum is formed during a suction stroke of the piston, which draws fluid downstream from the reservoir to prime the pump.

    ADJUSTABLE STOP FOR CHECK VALVE
    6.
    发明申请
    ADJUSTABLE STOP FOR CHECK VALVE 有权
    可调节止回阀

    公开(公告)号：US20140369874A1

    公开(公告)日：2014-12-18

    申请号：US14370177

    申请日：2012-12-14

    Applicant: Bradley H. HINES ,  Jeromy D. HORNING ,  Mariusz J. LUCZAK ,  William M. BLANKUSH ,  Mark D. SHULTZ ,  Graco Minnesota Inc.

    Inventor： Bradley H. Hines ,  Jeromy D. Horning ,  Mariusz J. Luczak ,  William M. Blenkush ,  Mark D. Shultz

    IPC: F16K17/06 ,  F16K15/04 ,  F04B49/22 ,  F16K15/02

    CPC classification number: F16K17/06 ,  F04B7/02 ,  F04B49/22 ,  F04C15/064 ,  F16K15/025 ,  F16K15/03 ,  F16K15/044 ,  Y10T137/7837 ,  Y10T137/7878 ,  Y10T137/7906

    Abstract: A check valve comprises a housing, a fluid passage, a seat, a valve member and a stop. The fluid passage extends through the housing. The seat is disposed in the fluid passage. The valve member is positioned in the passage to engage the seat. The stop extends through the housing to engage the valve member. The stop is accessible from outside the housing to adjust a distance the valve member can travel from the seat. In one embodiment, the stop includes a variable stop feature, such as an offset pin or a cam. In another embodiment, the stop includes a pump control valve. In yet another embodiment, the housing includes markings to indicate a position of the stop. The valve member comprises a ball or a poppet in different embodiments.

    Abstract translation: 止回阀包括壳体，流体通道，座椅，阀构件和止挡件。 流体通道延伸穿过壳体。 座椅设置在流体通道中。 阀构件定位在通道中以接合座椅。 止动件延伸穿过壳体以接合阀构件。 该挡块可从壳体的外部进入，以调节阀构件能够从座椅移动的距离。 在一个实施例中，止动件包括可变止动特征，例如偏置销或凸轮。 在另一个实施例中，止动件包括泵控制阀。 在另一个实施例中，壳体包括用于指示止动件的位置的标记。 在不同的实施例中，阀构件包括球或提升阀。

    Adjustable stop for check valve
    7.
    发明授权
    Adjustable stop for check valve 有权

    公开(公告)号：US11125226B2

    公开(公告)日：2021-09-21

    申请号：US15629025

    申请日：2017-06-21

    Applicant: Graco Minnesota Inc.

    Inventor： Bradley H. Hines ,  Jeromy D. Horning ,  Mariusz J. Luczak ,  William M. Blenkush ,  Mark D. Shultz

    IPC: F04B53/10 ,  F04B49/22 ,  F04B7/02 ,  F04C15/06 ,  F16K15/03 ,  F16K15/04 ,  F16K15/02 ,  F16K17/06

    Abstract: A check valve comprises a housing, a fluid passage, a seat, a valve member and a stop. The fluid passage extends through the housing. The seat is disposed in the fluid passage. The valve member is positioned in the passage to engage the seat. The stop extends through the housing to engage the valve member. The stop is accessible from outside the housing to adjust a distance the valve member can travel from the seat. In one embodiment, the stop includes a variable stop feature, such as an offset pin or a cam. In another embodiment, the stop includes a pump control valve. In yet another embodiment, the housing includes markings to indicate a position of the stop. The valve member comprises a ball or a poppet in different embodiments.

    SOLENOID VALVE FOR A PORTABLE HYDRAULIC POWER UNIT
    8.
    发明申请
    SOLENOID VALVE FOR A PORTABLE HYDRAULIC POWER UNIT 审中-公开

    公开(公告)号：US20180313350A1

    公开(公告)日：2018-11-01

    申请号：US15965028

    申请日：2018-04-27

    Applicant: Graco Minnesota Inc.

    Inventor： Charles W. Dawson ,  Mariusz J. Luczak ,  Barry W. Mattson ,  Douglas S. Ryder ,  Bret A. Deneson ,  Christopher A. Lins

    IPC: F04B49/22 ,  F04B23/06 ,  F04B53/10 ,  F04B17/06 ,  F04B17/03

    Abstract: A portable hydraulic power unit includes a fluid tank supported on a frame, a first pump configured to draw hydraulic fluid from the tank and a second pump configured to draw hydraulic fluid from the tank. The portable hydraulic power unit further includes a two-way valve disposed on a high-flow line extending from an output of the second pump, the two-way valve movable between an open state and a closed state. The two-way valve is electrically-actuated and configured to shift to the open state based on a hydraulic fluid pressure in a combined flow line downstream of the first pump and the second pump exceeding a threshold pressure level. The two-way valve directs the output of the second pump back to the fluid tank when the two-way valve is in the open state.

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