公开(公告)号：US4320691A

公开(公告)日：1982-03-23

申请号：US143996

申请日：1979-11-16

Applicant: Orcenith D. McWilliams

Inventor： Orcenith D. McWilliams

IPC: F15B13/042

CPC classification number: F15B13/042 ,  Y10T137/86606 ,  Y10T137/87201

Abstract: A hydraulic system (9) includes a hydraulic motor (10), a main control valve (17) for controlling said motor (10), a make-up valve (78,79) operatively associated with said main control valve (17) and a vent line (93,94,95,99) for selectively venting said make-up valve (78,79). In such hydraulic systems, and in particular, in prior art hydraulic systems used to raise and lower a load, there is always the possibility that should hydraulic pressure not be maintained in the vent line the make-up valve could come open and the load could unexpectedly move. Such a situation could occur with, for example, air trapped in said vent line and the simultaneous failure of a pump of the system. The present invention solves this problem by providing pressure maintaining arrangement (200) in fluid communication with said vent line (93,94,95,99). The pressure maintaining arrangement (200) insures that any air trapped in the vent line (93,94,95,99) will be compressed to maintain the pressure in the vent line (93,94,95,99) at a predetermined level. Thus, should the hydraulic pump (13,26) be inoperative, a load will not unexpectedly move due to the compression of air trapped in said vent line (93,94,95,99).

Abstract translation: 液压系统（9）包括液压马达（10），用于控制所述马达（10）的主控制阀（17），与所述主控制阀（17）可操作地连接的补充阀（78,79）和 用于选择性地排气所述化妆阀（78,79）的排气管（93,94,95,99）。 在这种液压系统中，特别是在用于升高和降低负载的现有技术的液压系统中，始终存在如下可能性：在排气管线中不能保持液压压力，补充阀可能会打开，并且负载可能 意外地移动 这种情况可能发生在例如在所述通气管线中捕获的空气和系统的泵的同时故障。 本发明通过提供与所述通气管线（93,94,95,99）流体连通的压力保持装置（200）来解决这个问题。 压力保持装置（200）确保在通气管线（93,94,95,99）中捕获的任何空气将被压缩，以将通气管线（93,94,95,99）中的压力保持在预定水平。 因此，如果液压泵（13,26）不工作，则由于压缩在所述通风管线中的空气（93,94,95,99），负载不会意外地移动。

公开(公告)号：US4102250A

公开(公告)日：1978-07-25

申请号：US714448

申请日：1976-08-16

Applicant: Lawrence F. Schexnayder

Inventor： Lawrence F. Schexnayder

IPC: F15B11/08 ,  F15B13/01 ,  F15B11/00 ,  F15B13/00

CPC classification number: F15B13/01 ,  Y10T137/87201 ,  Y10T137/87861

Abstract: A load check and bypass valve includes a check valve providing fluid flow from an inlet-outlet port to a motor port while blocking reverse flow therethrough and a bypass valve resiliently biased to a closed position for blocking fluid flow through a bypass connecting the motor port with the inlet-outlet port. The bypass valve has an opened position permitting fluid flow therethrough and is movable to its opened position by a selectively controllable actuating device. A first force exerting device is provided for exerting a force on the bypass valve urging it towards its opened position and is connected to the motor port by a first passage. A second force exerting device is provided for exerting a force on the bypass valve urging it towards its closed position and is connected to the motor port through a second passage. A check valve is disposed in the second passage providing fluid flow therethrough from the motor port to the second force exerting device while blocking reverse fluid flow therethrough. An orifice communicates with the second passage between the check valve and the second force exerting device.

Abstract translation: 负载检查和旁通阀包括止回阀，其提供从入口 - 出口到马达端口的流体流动，同时阻止反向流动，以及弹性地偏压到关闭位置的旁路阀，以阻止流体流过连接马达端口的旁路， 入口 - 出口。 旁通阀具有允许流体流过其中的打开位置，并且可通过可选择性控制的致动装置移动到其打开位置。 提供第一施力装置，用于在旁路阀上施加力以将其推向其打开位置，并通过第一通道连接到马达端口。 提供第二施力装置，用于在旁路阀上施加力以将其推向其关闭位置，并且通过第二通道连接到马达端口。 止回阀设置在第二通道中，提供从马达端口到第二施力装置的流体流动，同时阻止反向流体流过其中。 孔与止回阀和第二施力装置之间的第二通道连通。

公开(公告)号：USRE29481E

公开(公告)日：1977-11-29

申请号：US649416

申请日：1976-01-15

Applicant: Donald Alexander Larner

Inventor： Donald Alexander Larner

IPC: F15B13/042 ,  F16K11/02

CPC classification number: F15B13/042 ,  F16K11/022 ,  Y10T137/87201 ,  Y10T137/87209

Abstract: In order to provide a multi-way directional fluid flow control valve arrangement which provides good control while being relatively cheap to manufacture, I use simple main valves all of which have parallel axes and all lie in a common plane, enabling me to form the main valves in a cheap manufacturing operation; the pilot valve however is more complex and has at least four connections, but because the pilot valve is smaller, this extra complexity does not make the whole valve arrangement more expensive.

公开(公告)号：US4037617A

公开(公告)日：1977-07-26

申请号：US637502

申请日：1975-12-04

Applicant: Fernando Perales

Inventor： Fernando Perales

IPC: B60T11/32 ,  G05D11/00

CPC classification number: B60T11/326 ,  G05D11/00 ,  Y10T137/2655 ,  Y10T137/7843 ,  Y10T137/87201 ,  Y10T137/87893 ,  Y10T137/87917

Abstract: Multiway pneumatic valve comprising supply inlet and a plurality of separate outlets connected to the inlet by separate circuits.Third and fourth circuits are respectively in series with first and second circuits. Calibrated diaphragms are exposed at their periphery to the supply pressure and in their central portion to the pressure in the tank which they control. If a tank fails, the corresponding diaphragm isolates this tank. Flaps each comprising a loose strip isolate the whole tank system in the case of a supply failure.The valve can be applied to any gas distribution problem and more particularly to pneumatic brake circuits.

Abstract translation: 多通道气动阀包括供应入口和通过分开的电路连接到入口的多个单独出口。

公开(公告)号：US3996964A

公开(公告)日：1976-12-14

申请号：US490623

申请日：1974-07-22

Applicant: Howard L. McCombs

Inventor： Howard L. McCombs

IPC: F04D27/02 ,  F16K11/20

CPC classification number: F04D27/023 ,  F04D27/0223 ,  Y10T137/2557 ,  Y10T137/86485 ,  Y10T137/86582 ,  Y10T137/86606 ,  Y10T137/86654 ,  Y10T137/86895 ,  Y10T137/86919 ,  Y10T137/87201 ,  Y10T137/87772 ,  Y10T137/87845 ,  Y10T137/87893

Abstract: Control apparatus for programmed control of a plurality of gas turbine engine compressor air bleed valves in response to a plurality of control input signals representing engine operating conditions including variable conditions related to engine power output. The control inputs are sensed and/or computed and scheduled to provide accurate and reliable control over a plurality of compressor air bleed valves by means including a hydraulic programmer with a three dimensional compressor rise scheduling cam and adjustable hydraulic timers.

公开(公告)号：US3996840A

公开(公告)日：1976-12-14

申请号：US491112

申请日：1974-07-23

Applicant: Masayuki Futamata ,  Hidenori Sato

Inventor： Masayuki Futamata ,  Hidenori Sato

IPC: F15B11/08 ,  F15B11/00 ,  F15B13/042 ,  F04B21/00

CPC classification number: F15B11/00 ,  F15B13/042 ,  F15B2211/30575 ,  F15B2211/31576 ,  F15B2211/329 ,  Y10T137/87201

Abstract: A control circuit for an actuator having an operation valve for selectively distributing hydraulic oil from a pump to plural actuators which has a plurality of conduits, a plurality of pilot-operated valves for controlling the flow direction of oil to the actuator side or the tank side, and a pilot spool valve, whereby the operating force of the operation valve can be greatly reduced in simple operation.

Abstract translation: 一种用于致动器的控制电路，其具有用于将液压油从泵选择性地分配到具有多个管道的多个致动器的操作阀，用于控制到致动器侧或罐侧的油流动方向的多个先导阀 和先导滑阀，由此能够在简单的操作中大大降低操作阀的操作力。

公开(公告)号：US3972267A

公开(公告)日：1976-08-03

申请号：US555656

申请日：1975-03-05

Applicant: Willard J. Haak ,  Howard A. Marsden ,  James R. Sturges

Inventor： Willard J. Haak ,  Howard A. Marsden ,  James R. Sturges

IPC: F15B11/04 ,  B66F3/24 ,  F15B13/01 ,  F15B13/04 ,  F15B15/18 ,  F15B11/08 ,  F15B13/042

CPC classification number: F15B13/01 ,  F15B13/0402 ,  Y10T137/7782 ,  Y10T137/87201 ,  Y10T137/87225

Abstract: An overrunning load control for a hydraulic jack includes a pair of variable orifice means in series, with the degree of metering of one of such orifices being determined by fluid pressure in the end of the hydraulic jack resisting the load. The degree of metering of the other variable orifice may be selectively chosen, through actuation of a relatively low pressure hydraulic pilot system.

Abstract translation: 用于液压千斤顶的超越负载控制包括一对串联的可变孔口装置，其中一个孔口的计量程度由抵抗负载的液压千斤顶末端的流体压力决定。 可以通过致动相对低压的液压导向系统来选择性地选择另一个可变孔口的计量度。

公开(公告)号：US3925980A

公开(公告)日：1975-12-16

申请号：US49062474

申请日：1974-07-22

Applicant: BENDIX CORP

Inventor： MCCOMBS HOWARD L

IPC: F02C9/18 ,  F02C9/52 ,  F04D27/02 ,  F02C9/14

CPC classification number: F02C9/52 ,  F02C9/18 ,  F04D27/0223 ,  F04D27/023 ,  Y10T137/86485 ,  Y10T137/86606 ,  Y10T137/86895 ,  Y10T137/86919 ,  Y10T137/87201

Abstract: Control apparatus for programmed control of a plurality of gas turbine engine compressor air bleed valves in response to a plurality of control input signals representing engine operating conditions including variable conditions related to engine power output. The control inputs are sensed and/or computed and scheduled to provide accurate and reliable control over a plurality of compressor air bleed valves by means including a hydraulic programmer with a three dimensional compressor rise scheduling can and adjustable hydraulic timers.

Abstract translation: 控制装置，用于响应于多个控制输入信号来编程控制多个燃气涡轮发动机压缩机排气阀，所述多个控制输入信号表示包括与发动机功率输出有关的可变条件的发动机运行状态。 控制输入​​被感测和/或计算和调度以通过包括具有三维压缩机升程调度罐和可调节液压定时器的液压编程器的装置来提供对多个压缩机排气阀的精确和可靠的控制。

公开(公告)号：USB351883I5

公开(公告)日：1975-01-28

申请号：US35188373

申请日：1973-04-17

IPC: B24C7/00

CPC classification number: B24C7/0046 ,  Y10T137/87201

公开(公告)号：US3851664A

公开(公告)日：1974-12-03

申请号：US30561772

申请日：1972-11-10

Applicant: ZADOW H ,  ZADOW H

Inventor： ZADOW H ,  ZADOW H

IPC: F15B13/04 ,  F16K11/10 ,  F16K31/12

CPC classification number: F16K11/10 ,  F15B13/0402 ,  Y10T137/86895 ,  Y10T137/87201

Abstract: A valve assembly comprising at least two valves each having a chamber provided with inlet and outlet ports. Each chamber accommodates a movable plate-like valve member to control flow through the ports. Control means, which may be in the form of a movable rod engageable with the valve member, controls the position of the valve member.

Abstract translation: 一种阀组件，其包括至少两个阀，每个阀具有设置有入口和出口的室。 每个室容纳可移动的板状阀构件以控制通过端口的流量。 控制装置可以是可与阀构件接合的活动杆的形式，控制阀构件的位置。