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    Fail safe compensator used in a hydraulic servo control system
    21.
    发明授权
    Fail safe compensator used in a hydraulic servo control system 失效
    液压伺服控制系统中使用的故障安全补偿器

    公开(公告)号：US4351357A

    公开(公告)日：1982-09-28

    申请号：US248611

    申请日：1981-03-27

    Applicant: Myrl E. Orme

    Inventor： Myrl E. Orme

    IPC: F15B11/08 ,  F15B1/04 ,  F15B20/00 ,  F15B21/04 ,  F15B1/02

    CPC classification number: F15B1/04 ,  F15B20/008 ,  F15B21/047 ,  F15B2201/21 ,  F15B2201/312 ,  F15B2201/411 ,  F15B2201/413 ,  Y10T137/7478

    Abstract: A compensator for use with a hydraulic control valve connected to a source of high fluid pressure provides the functions of a low pressure return line accumulator and controllable check valve. A spring loaded piston (66) in a housing (64) has a working face exposed to fluid pressure downstream of the power control unit (10). A poppet valve (80) movable in a bore (78) on the axis of the piston is spring loaded against a seat (82) in the return line (40, 42) to interrupt flow between the downstream side of the power control unit (10) and the return side of the fluid pressure source. When normal return line pressure is sensed, the piston (66) moves against its spring (68) to permit the housing (64) to be substantially filled with fluid. Further increases in fluid pressure cause the piston (66) to contact and open the poppet (80) and permit flow to the return side (42) of the fluid pressure source. A working area (92) is formed on a part of the poppet (80) to the outside of the seat which area is exposed to the fluid pressure downstream of the power control unit (10). Should the piston (66) stick or seize in the housing (64), the fluid pressure acting against this working area (92) would increase to some value significantly above the normal pressure at which point it becomes sufficient to open the poppet (80), thus preventing the power control unit (10) from jamming or becoming hydraulically locked in position.

    Abstract translation: 与连接到高流体源的液压控制阀一起使用的补偿器提供低压回油管路蓄能器和可控止回阀的功能。 在壳体（64）中的弹簧加载活塞（66）具有暴露于动力控制单元（10）下游的流体压力的工作面。 可在活塞轴线上的孔（78）中移动的提升阀（80）弹簧加载在返回管线（40,42）中的座（82）上，以中断在动力控制单元（ 10）和流体压力源的返回侧。 当检测到正常的返回管路压力时，活塞（66）抵靠其弹簧（68）移动，以允许壳体（64）基本上充满流体。 流体压力的进一步增加导致活塞（66）接触并打开提升阀（80）并允许流动到流体压力源的返回侧（42）。 在提升阀（80）的一部分上形成工作区域（92），该区域暴露在动力控制单元（10）下游的流体压力下。 如果活塞（66）在壳体（64）中粘住或卡住，则作用在该工作区域（92）上的流体压力将增加到显着高于正常压力的一些值，在该点处，足以打开提升阀（80） ，从而防止动力控制单元（10）卡住或变为液压锁定就位。

    Hydropneumatic pressure reservoir assembly
    22.
    发明授权
    Hydropneumatic pressure reservoir assembly 失效
    液压气压储罐总成

    公开(公告)号：US4271869A

    公开(公告)日：1981-06-09

    申请号：US37126

    申请日：1979-05-08

    Applicant: Johann Weidl ,  Gunter Heyer ,  Wilhelm Wecker ,  Gerhard Weippert ,  Paul Spichala

    Inventor： Johann Weidl ,  Gunter Heyer ,  Wilhelm Wecker ,  Gerhard Weippert ,  Paul Spichala

    IPC: F15B1/08 ,  F15B1/10 ,  F16F9/096 ,  F16L55/04

    CPC classification number: F15B1/106 ,  F16F9/096 ,  F15B2201/205 ,  F15B2201/312 ,  F15B2201/3152 ,  F15B2201/32 ,  F15B2201/4155 ,  F15B2201/43

    Abstract: A hydropneumatic assembly particularly for use as a pressure reservoir in a shock absorber includes a housing with a diaphragm operatively mounted within the housing to define therein a liquid chamber on one side of the diaphragm and a gas chamber on the opposite side thereof. The liquid chamber is defined between an inner wall of the housing and the diaphragm and the diaphragm is arranged to be pressed against the inner wall under the influence of gas pressure within the gas chamber. Damping liquid for a shock absorber flows into and out of the liquid chamber to an opening provided in the inner wall of the housing and, by a special feature of the assembly, ducts are defined between the inner wall of the housing and the diaphragm, with the ducts being directed to extend toward the opening through which liquid flows into and out of the liquid chamber.

    Abstract translation: 特别用作减震器中的压力储存器的液压气动组件包括壳体，其具有可操作地安装在壳体内的隔膜，以在隔膜的一侧上限定液体室和在其相对侧上的气体室。 液体室限定在壳体的内壁和隔膜之间，并且隔膜被布置成在气体室内的气体压力的影响下被压靠在内壁上。 用于减震器的阻尼液体流入和流出液体室到设置在壳体的内壁中的开口，并且通过组件的特殊特征，在壳体的内壁和隔膜之间限定管道， 导管被引导朝向液体流入和流出液体室的开口延伸。

    Gas charged accumulator with failure indicator
    23.
    发明授权
    Gas charged accumulator with failure indicator 失效
    带有故障指示器的充气蓄电池

    公开(公告)号：US4207563A

    公开(公告)日：1980-06-10

    申请号：US913646

    申请日：1978-06-08

    Applicant: Thomas R. Soupal

    Inventor： Thomas R. Soupal

    IPC: F15B1/08 ,  F15B1/24 ,  G08B21/00 ,  F16K37/00

    CPC classification number: F15B1/24 ,  F15B1/08 ,  F15B2201/205 ,  F15B2201/21 ,  F15B2201/312 ,  F15B2201/41 ,  F15B2201/4155 ,  F15B2201/515 ,  Y10T137/8326

    Abstract: A gas charged accumulator includes a gas chamber and a hydraulic reservoir on opposite sides of a movable member. A fill passage for pressurizing the gas chamber includes a movable operating device for operating an indicator when the accumulator is substantially discharged. Gas flows directly past the indicator operating device when the gas chamber is pressurized through the fill passage. A normally closed switch assembly is mounted in the fill opening outwardly of the indicator operating device subsequent to pressurization of the gas chamber. The indicator operating device holds the switch assembly in an open position when the accumulator is charged and provides closing of the switch when the accumulator is substantially discharged.

    Abstract translation: 充气蓄能器包括气体室和位于可移动构件的相对侧上的液压容器。 用于对气室进行加压的填充通道包括用于在蓄能器基本上排出时操作指示器的可移动操作装置。 当气室通过填充通道加压时，气体直接流过指示器操作装置。 在气体室的加压之后，常闭开关组件安装在指示器操作装置的外部的填充开口中。 当蓄能器充电时，指示器操作装置将开关组件保持在打开位置，并且当蓄能器基本上释放时提供关闭开关。

    Fluid reservoir device with fill means, level indicator means and pressure relief means
    25.
    发明授权
    Fluid reservoir device with fill means, level indicator means and pressure relief means 失效
    具有填充装置的液体储存装置，液位指示装置和减压装置

    公开(公告)号：US4000758A

    公开(公告)日：1977-01-04

    申请号：US516727

    申请日：1974-10-21

    Applicant: Daniel T. Meisenheimer, Jr.

    Inventor： Daniel T. Meisenheimer, Jr.

    IPC: B64C27/51 ,  F15B1/04 ,  F15B1/24 ,  F16L55/04

    CPC classification number: B64C27/51 ,  F15B1/04 ,  F15B1/24 ,  F16L55/04 ,  F15B2201/21 ,  F15B2201/312 ,  F15B2201/32 ,  F15B2201/411 ,  Y10T137/777

    Abstract: A fluid reservoir device for use in conjunction with fluid-filled systems, such as helicopter blade dampers, comprises a cylindrical chamber wall closed across its bottom by a mounting shank having a fluid inlet opening formed therethrough. A first piston is slideably mounted within the cylindrical chamber wall and spring biased downwardly therein, and a second piston is slideably mounted in the first piston, and is spring biased downwardly therein, the combined work surfaces of the first and second pistons closing the cylindrical chamber wall wherein a chamber is defined having a volume which varies according to the positions of the first and second pistons. The chamber is filled by moving the first piston (and the second piston mounted therein) upwardly, and the first piston is spring biased downward to force fluid from the chamber to the fluid-filled system as required. If additional fluid is forced from the fluid-filled system into the chamber, it is accommodated by driving the second piston upwardly to increase the volume of the chamber. Fluid escape means comprises a fluid escape passage normally blocked by a spring biased piston which lifts under excessive pressure to bleed fluid from the chamber, thereby relieving the excessive pressure condition.

    Abstract translation: 用于与诸如直升机叶片阻尼器的流体填充系统一起使用的流体储存装置包括通过其底部封闭的圆柱形室壁，该安装柄具有通过其形成的流体入口。 第一活塞可滑动地安装在圆柱形腔室壁内，弹簧向下偏压，第二活塞可滑动地安装在第一活塞中，弹簧向下偏压，第一和第二活塞的组合工作表面封闭圆柱形腔室 壁，其中限定具有根据第一和第二活塞的位置而变化的体积的室。 通过向上移动第一活塞（和安装在其中的第二活塞）来填充腔室，并且第一活塞被向下弹簧偏压，以迫使流体从腔室到流体填充系统的需要。 如果从流体填充系统迫使另外的流体进入腔室，则通过向上驱动第二活塞以增加腔室的容积来容纳其中的流体。 流体逃逸装置包括通常被弹簧偏压的活塞阻塞的流体逸出通道，其在过大的压力下提升以从腔室排出流体，从而缓解过大的压力状况。

    Accumulator with combination guide and seal ring
    26.
    发明授权
    Accumulator with combination guide and seal ring 失效
    具有组合指导和密封圈的累加器

    公开(公告)号：US3863677A

    公开(公告)日：1975-02-04

    申请号：US35379573

    申请日：1973-04-23

    Applicant: PARKER HANNIFIN CORP

    Inventor： TARSHA MANUEL A

    IPC: F15B1/08 ,  F15B1/24 ,  F16J10/04 ,  F16J15/06 ,  F16L55/04

    CPC classification number: F16J15/064 ,  F15B1/24 ,  F15B2201/205 ,  F15B2201/312 ,  F15B2201/411 ,  F15B2201/4155 ,  F16J10/04 ,  F16L55/04

    Abstract: A piston type accumulator with a combination guide and seal ring mounted on the piston so that the ring slidably contacts the internal cylindrical wall of the accumulator to guide movement of the piston and so that it seals against one end of the accumulator when the piston is at such end to preclude leakage of fluid from one side of the piston to the other in case the regular seal for the piston is ineffective.

    Abstract translation: 一种活塞式蓄能器，其具有安装在活塞上的组合引导和密封环，使得环可滑动地接触蓄能器的内圆柱形壁以引导活塞的运动，并且当活塞处于活塞时，其与蓄能器的一端密封 这样一来，在活塞的常规密封件无效的情况下，排除了活塞从活塞的一侧向另一侧的泄漏。

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