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    Pressure regulation and flow control valve with combination needle and check valves
    51.
    发明授权
    Pressure regulation and flow control valve with combination needle and check valves 失效
    压力调节和流量控制阀，组合针头和止回阀

    公开(公告)号：US4177840A

    公开(公告)日：1979-12-11

    申请号：US865390

    申请日：1977-12-29

    Applicant: James A. Neff ,  Richard A. Fagerlie

    Inventor： James A. Neff ,  Richard A. Fagerlie

    IPC: F15B13/02 ,  F15B11/04 ,  F15B13/042

    CPC classification number: F15B13/02 ,  Y10T137/7801 ,  Y10T137/87563

    Abstract: A combination pressure regulating and flow control valve which includes a valve body and cover means having an upstream port and a downstream port, and a fluid flow passage interconnecting said ports. An adjustable pressure regulator valve means is operatively mounted in said fluid flow passage. A check valve means is operatively mounted in parallel with said adjustable pressure regulator valve means, and it is operative to check the flow of fluid through said fluid flow passage when fluid is flowing through said fluid flow passage from the upstream port to the downstream port, and force it through the regulator valve means, and to allow flow of fluid through the check valve means when fluid is exhausted into said downstream port and out the upstream pressure port. A double acting, adjustable fluid flow control valve means is operatively mounted in said fluid flow passage which can provide either a meter in action or a meter out action in one direction with a free flow action in the other direction to the flow of fluid through said passage. The double acting, adjustable fluid flow control valve can also provide free flow action condition in both directions without any metering action. An adjustable quick exhaust valve means is included for quickly exhausting the downstream pressure through a second parallel fluid flow passage simultaneously with the exhaust of fluid flow through the first named passage and check valve means. The adjustable fluid flow control means includes a pair of needle valves that may be operatively mounted on a single valve stem, or on a pair of individual valve stems whereby both a meter in action and a meter out action can be provided without any free flow action.

    Abstract translation: 一种组合压力调节和流量控制阀，其包括阀体和具有上游端口和下游端口的盖装置以及互连所述端口的流体流动通道。 可调节的压力调节阀装置可操作地安装在所述流体流动通道中。 止回阀装置与所述可调压力调节阀装置并联地可操作地安装，并且当流体从上游端口流到下游端口流体流过所述流体流动通道时，止回阀装置可操作地检查通过所述流体流动通道的流体流动， 并且迫使其通过调节阀装置，并且当流体排出到所述下游端口并流出上游压力端口时，允许流体流过止回阀装置。 双作用可调节的流体流量控制阀装置可操作地安装在所述流体流动通道中，该流动流动通道可以在一个方向上提供流量计或流出力，而在另一个方向上具有自由流动作用， 通道。 双作用可调节流体流量控制阀还可以在两个方向上提供自由流动作用状态，而无需任何计量动作。 包括一个可调节的快速排气阀装置，用于通过第二平行的流体流动通道与下游压力同时排出通过第一个命名通道和止回阀装置的流体流动排出。 可调节的流体流量控制装置包括一对针阀，其可以可操作地安装在单个阀杆上或一对单独的阀杆上，由此可以在没有任何自由流动作用的情况下提供流量计和流出动作 。

    Hydraulic valve
    52.
    发明授权
    Hydraulic valve 失效
    液压阀

    公开(公告)号：US4076210A

    公开(公告)日：1978-02-28

    申请号：US553735

    申请日：1975-02-27

    Applicant: Harry Spielvogel

    Inventor： Harry Spielvogel

    IPC: F16K31/12 ,  F15B11/04 ,  F16K1/52 ,  F16K3/32 ,  F16K31/122 ,  F16K51/00

    CPC classification number: F16K1/52 ,  F16K3/32

    Abstract: A hydraulic valve has a valve member whose travel is limited at one end by an abutment. The abutment is part of a hydraulic piston-cylinder arrangement, and when the piston-cylinder arrangement is pressurized and the valve member is moved to the end of its travel, the abutment is held in a first position where the valve is only open to a small extent. If the piston-cylinder arrangement is then pressure-relieved, the force moving the valve member against the abutment displaces the abutment so that the valve can open further.

    Abstract translation: 液压阀具有阀构件，该阀构件的行程在一端被邻接限制。 基台是液压活塞 - 气缸装置的一部分，并且当活塞 - 气缸装置被加压并且阀构件移动到其行程的末端时，邻接件被保持在第一位置， 很小的程度 如果活塞 - 气缸装置然后被压力释放，则使阀构件抵靠抵接件移动的力使该邻接件移位，使得该阀可进一步打开。

    Device for controlling the boom elevation of a side crane
    53.
    发明授权
    Device for controlling the boom elevation of a side crane 失效
    用于控制侧起重机的吊臂高度的装置

    公开(公告)号：US3990583A

    公开(公告)日：1976-11-09

    申请号：US451158

    申请日：1974-03-14

    Applicant: Kazumori Nishida ,  Toshinori Kawahashi

    Inventor： Kazumori Nishida ,  Toshinori Kawahashi

    IPC: F15B11/04 ,  B66C13/18 ,  B66C23/36 ,  B66C23/82 ,  B66C23/56 ,  F15B13/042 ,  F15B13/06

    CPC classification number: B66C13/18 ,  Y10T137/87177

    Abstract: A device for elevating the boom of a side crane has a double acting valve provided in a hydraulic circuit so as to permit natural lowering of the boom of the side crane under its own weight as well as forcible raising and lowering hydraulically, and also so as to maintain the boom without need of further fluid supply from a pump in its forcibly lowered or lifted state for a long period of time through the trapping of hydraulic fluid within the boom cylinders on both the lifting and lowering sides thereof.

    Abstract translation: 用于升降侧起重机的起重臂的装置具有设置在液压回路中的双作用阀，以便能够在其自重下自动降低侧起重机的起重臂，并且液压地强制升降。 以保持动臂，而不需要通过在动臂缸的升降两侧捕获动力缸中的液压流体，而不需要长时间从强制下降或提升状态的泵进一步供给液体。

    Fluid motor control circuit with overspeed limiting means
    58.
    发明授权
    Fluid motor control circuit with overspeed limiting means 失效
    具有超限制装置的流体电动机控制电路

    公开(公告)号：US3750690A

    公开(公告)日：1973-08-07

    申请号：US3750690D

    申请日：1971-12-13

    Applicant: CATERPILLAR TRACTOR CO

    Inventor： BUBULA T ,  LOHBAUER K

    IPC: F16K11/07 ,  F15B11/02 ,  F15B11/05 ,  F16K31/12 ,  F15B11/04

    CPC classification number: F16H61/4061 ,  F15B11/05 ,  F15B2211/30525 ,  F15B2211/31558 ,  F15B2211/329 ,  F15B2211/353 ,  F15B2211/75 ,  Y10T137/2554 ,  Y10T137/8671

    Abstract: Pressurized fluid is supplied to a reversible fluid motor through a motor control valve which may be shifted to direct fluid to either port of the motor while communicating the other motor port with an individual exhaust passage for that port thereby providing for motor operation in either direction. A separate overspeed inhibiting vlave is disposed in each of the two exhaust passages and each responds to a pressure decrease in the fluid entering the motor by reducing the flow passage for fluid exhausting from the motor thereby maintaining a constant speed determined by the setting of the motor control valve. Disposition of the overspeed valves in the motor control valve exhaust passages rather than between the motor control valve and the motor avoids any need for a bypass check valve at each overspeed valve.

    Abstract translation: 加压流体通过马达控制阀提供给可逆流体马达，该马达控制阀可以移动以将流体引导到马达的任一端口，同时将另一个马达端口与用于该端口的单独的排气通道连通，从而提供沿任一方向的马达运行。 在两个排气通道中的每一个中设置单独的超速抑制阀，并且通过减小用于从马达排出的流体的流动通道来响应进入马达的流体的压力降低，从而保持由马达的设定确定的恒定速度 控制阀。 在马达控制阀排气通道中而不是马达控制阀和马达之间的超速阀的配置避免了在每个超速阀处需要旁路止回阀。

    Load balancer with safety control
    59.
    发明授权
    Load balancer with safety control 失效
    负载平衡与安全控制

    公开(公告)号：US3747886A

    公开(公告)日：1973-07-24

    申请号：US3747886D

    申请日：1971-09-20

    Applicant: CONCO INC

    Inventor： CARLSON A ,  WATSON R

    IPC: F15B11/04 ,  B66C23/00 ,  B66F19/00 ,  F15B13/10 ,  F15B20/00 ,  B66D1/00

    CPC classification number: B66C23/005 ,  Y10S414/13

    Abstract: A load balancer having a load support arm with a power cylinder having a piston operably connected to the arm with a control circuit including a pilot operated valve for directing pressure fluid to the cylinder to maintain a constant pressure on the cylinder piston in all positions of the load support arm with means for limiting the rate of movement of said load support arm in the event that either the load is lost or there is a loss of fluid pressure acting on said piston when there is a load on the load support arm.

    Abstract translation: 一种负载平衡器，其具有负载支撑臂，动力缸具有可操作地连接到该臂的活塞，该活塞具有控制电路，该控制电路包括用于将压力流体引导至气缸的先导操作阀，以在气缸活塞的所有位置中保持恒定的压力 负载支撑臂具有用于在负载损失或在负载支撑臂上存在负载时作用在所述活塞上的流体压力损失的情况下限制所述负载支撑臂的运动速度的装置。

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