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    HYDRAULIC CHANGEOVER VALVE
    1.
    发明申请
    HYDRAULIC CHANGEOVER VALVE 审中-公开

    公开(公告)号：US20180328499A1

    公开(公告)日：2018-11-15

    申请号：US15976095

    申请日：2018-05-10

    Applicant: Graco Minnesota Inc.

    Inventor： Dustin A. Tichy ,  Stephen L. Van Krevelen ,  Suresha Saragur Nijaguna

    IPC: F16K11/02 ,  F16N25/00

    CPC classification number: F16K11/02 ,  F16N7/385 ,  F16N25/00 ,  F16N2280/00

    Abstract: A changeover valve for a single line parallel lubrication system includes a base housing, a first housing, and a second housing, which are distinct and separable units arranged to provide direct fluid communication between base housing, first housing, and second housing fluid channels. The base housing includes a plurality of fluid channels. The first and second housings each include a spool mounted in a cylindrical bore and hydraulically displaceable between ends of the cylindrical bore and a plurality of fluid channels fluidly connected to the cylindrical bore. The first and second housings are configured to mate with the base housing in a fluid seal. At least one of the base housing, first housing, and second housing includes and a relief valve in fluid communication with one or more of the plurality of base housing, first housing, and second housing fluid channels.

    Hydraulic changeover valve
    3.
    发明授权
    Hydraulic changeover valve 有权

    公开(公告)号：US10788132B2

    公开(公告)日：2020-09-29

    申请号：US15976095

    申请日：2018-05-10

    Applicant: Graco Minnesota Inc.

    Inventor： Dustin A. Tichy ,  Stephen L. Van Krevelen ,  Suresha Saragur Nijaguna

    IPC: F16K11/02 ,  F16N25/00 ,  F16N7/38

    Abstract: A changeover valve for a single line parallel lubrication system includes a base housing, a first housing, and a second housing, which are distinct and separable units arranged to provide direct fluid communication between base housing, first housing, and second housing fluid channels. The base housing includes a plurality of fluid channels. The first and second housings each include a spool mounted in a cylindrical bore and hydraulically displaceable between ends of the cylindrical bore and a plurality of fluid channels fluidly connected to the cylindrical bore. The first and second housings are configured to mate with the base housing in a fluid seal. At least one of the base housing, first housing, and second housing includes and a relief valve in fluid communication with one or more of the plurality of base housing, first housing, and second housing fluid channels.

    CONTINUOUS RESERVOIR LEVEL MONITORING
    6.
    发明申请
    CONTINUOUS RESERVOIR LEVEL MONITORING 审中-公开

    公开(公告)号：US20190024547A1

    公开(公告)日：2019-01-24

    申请号：US16070671

    申请日：2017-01-18

    Applicant: Graco Minnesota, Inc.

    Inventor： Brandon T. Gustafson ,  Suresha Saragur Nijaguna ,  Chad G. Igo

    IPC: F01M11/12 ,  F04B49/06 ,  F04B53/18 ,  F16N29/02 ,  F04B39/02

    Abstract: The lubricant level within a reservoir is difficult to monitor, leading to the reservoir being refilled more often than necessary to ensure that the reservoir always contains lubricant. A lubricant level sensing system is connected to and monitors various aspects of the pump assembly that draws lubricant from the reservoir. The pump assembly displaces a known volume of lubricant with each pump stroke. A lubricant-level estimator calculates an estimated lubricant level remaining in the reservoir based on a stroke-count value as sensed from the pump assembly and on a reference value stored in a memory. The estimated lubricant level provides the lubricant remaining and the rate of usage such that maintenance can be scheduled ahead of time to prevent the reservoir running dry.

    DUAL PARALLEL OUTLET CHECK VALVE
    7.
    发明申请
    DUAL PARALLEL OUTLET CHECK VALVE 审中-公开
    双平行出口检查阀

    公开(公告)号：US20160312953A1

    公开(公告)日：2016-10-27

    申请号：US15136297

    申请日：2016-04-22

    Applicant: Graco Minnesota Inc.

    Inventor： John C. Holman ,  Ryan David Kennedy ,  Suresha Saragur Nijaguna

    IPC: F16N23/00 ,  F16N13/02 ,  F16K15/04

    CPC classification number: F16N13/02 ,  F16N7/385 ,  F16N11/04 ,  F16N13/16

    Abstract: A dual parallel outlet check valve includes a first one-way valve and a second one-way valve. The first one-way valve and the second one-way valve are normally closed valves. Both the first one-way valve and the second one-way valve are disposed in a valve housing, and the first one-way valve is disposed adjacent to and runs parallel with the second one-way valve. The first one-way valve allows lubricant to flow downstream from a fluid chamber to build a downstream pressure, thereby causing lubricant applicators to dispense lubricant. The second one-way valve allows lubricant to flow upstream back into the fluid chamber, thereby allowing the downstream pressure to drop and the lubricant applicators to reset.

    Abstract translation: 双平行出口止回阀包括第一单向阀和第二单向阀。 第一单向阀和第二单向阀是常闭阀。 第一单向阀和第二单向阀均设置在阀壳体中，并且第一单向阀设置成与第二单向阀相邻并平行。 第一单向阀允许润滑剂从流体室的下游流动以形成下游压力，从而使润滑剂施加器分配润滑剂。 第二单向阀允许润滑剂上游流动到流体室中，从而允许下游压力下降并且润滑剂施加器复位。

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