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    Hydro-pneumatic system with pressure limiting valve
    5.
    发明授权
    Hydro-pneumatic system with pressure limiting valve 有权
    液压气动系统带限压阀

    公开(公告)号：US08689823B2

    公开(公告)日：2014-04-08

    申请号：US12446611

    申请日：2007-10-25

    申请人： Frantz D. Stanford ,  Bruce E. Knuth ,  Kay Lap Gilbert Chan

    发明人： Frantz D. Stanford ,  Bruce E. Knuth ,  Kay Lap Gilbert Chan

    IPC分类号： F16K31/12 ,  F16K31/36 ,  F04B35/00 ,  F04B35/02

    CPC分类号： F15B11/072 ,  F15B2211/20507 ,  F15B2211/20538 ,  F15B2211/216 ,  F15B2211/26 ,  F15B2211/6051 ,  F16K31/1221 ,  Y10T137/7796 ,  Y10T137/7804 ,  Y10T137/7922

    摘要： A hydro-pneumatic system has an air powered motor driving a hydraulic pump with a pressure limiting valve that turns off air flow to the air motor when a hydraulic pressure output by the pump at a sense port of the valve reaches a certain limit. A valve element of the valve has spring, hydraulic and pneumatic sections, with an unbalanced area of the hydraulic section in a sealed pressure chamber of a cartridge that is part of the valve housing. The pneumatic section extends out one end of the cartridge to fill a bore between the air inlet and outlet ports when the pneumatic section is extended, and allow air to pass when it is retracted.

    摘要翻译： 液压气动系统具有驱动液压泵的空气动力马达，该液压泵具有压力限制阀，当在阀的感应端口处的泵输出的液压压力达到一定限度时，该压力限制阀将空气流向空气马达。 阀的阀元件具有弹簧，液压和气动部分，在作为阀壳体的一部分的盒的密封压力室中具有液压部分的不平衡区域。 当气动部分延伸时，气动部分延伸出筒的一端以填充空气入口和出口之间的孔，并允许空气在其缩回时通过。

    AIR DRIVEN HYDRAULIC PUMP
    6.
    发明申请
    AIR DRIVEN HYDRAULIC PUMP 有权
    空气驱动液压泵

    公开(公告)号：US20100215521A1

    公开(公告)日：2010-08-26

    申请号：US12515221

    申请日：2007-11-21

    申请人： Bruce E. Knuth ,  Kay Lap Gilbert Chan ,  Theo H. H. Den Ridder ,  Frantz D. Stanford ,  Roger R. Pili

    发明人： Bruce E. Knuth ,  Kay Lap Gilbert Chan ,  Theo H. H. Den Ridder ,  Frantz D. Stanford ,  Roger R. Pili

    IPC分类号： F04B17/00

    CPC分类号： F04B23/06 ,  F04B17/00

    摘要： A rotary air motor driven hydraulic pump has separate pressure and return actuators and first and second stage eccentric driven pistons 180 degrees out of phase and driven by the motor through a gear reduction unit. The pressure and return actuators are on/off/proportional valves and the pump has two pressure relief valves with one adjustable from outside of the pump for a user to set a pressure limit of the pump. Above a certain output pressure limit, a bypass valve shunts flow in excess of that needed to precharge the second stage compression chamber from the first stage piston to an elastic reservoir from which the hydraulic fluid pumped by the pump is drawn. To make the pump stall at a certain output pressure, a pressure limiting valve can be used that cuts off the air supply to the pump at the desired output pressure.

    摘要翻译： 旋转气动马达驱动的液压泵具有单独的压力和返回致动器以及180度异相的第一和第二级偏心驱动活塞，并且由马达通过齿轮减速单元驱动。 压力和返回致动器是开/关/比例阀，泵具有两个压力释放阀，一个可从泵的外部调节，用于使用者设定泵的压力极限。 在一定的输出压力极限之上，旁路阀将流过超过将第二级压缩室预先从第一级活塞预充气到由泵泵送的液压流体的弹性容器所需的流量。 为了使泵在一定的输出压力下停止，可以使用限压阀，以期望的输出压力切断泵的空气供应。

    Air driven hydraulic pump
    7.
    发明授权
    Air driven hydraulic pump 有权
    气动液压泵

    公开(公告)号：US08496449B2

    公开(公告)日：2013-07-30

    申请号：US12515221

    申请日：2007-11-21

    申请人： Bruce E. Knuth ,  Kay Lap Gilbert Chan ,  Theo H. H. Den Ridder ,  Frantz D. Stanford ,  Roger R. Pili

    发明人： Bruce E. Knuth ,  Kay Lap Gilbert Chan ,  Theo H. H. Den Ridder ,  Frantz D. Stanford ,  Roger R. Pili

    IPC分类号： F04B35/00

    CPC分类号： F04B23/06 ,  F04B17/00

    摘要： A rotary air motor driven hydraulic pump has separate pressure and return actuators and first and second stage eccentric driven pistons 180 degrees out of phase and driven by the motor through a gear reduction unit. The pressure and return actuators are on/off/proportional valves and the pump has two pressure relief valves with one adjustable from outside of the pump for a user to set a pressure limit of the pump. Above a certain output pressure limit, a bypass valve shunts flow in excess of that needed to precharge the second stage compression chamber from the first stage piston to an elastic reservoir from which the hydraulic fluid pumped by the pump is drawn. To make the pump stall at a certain output pressure, a pressure limiting valve can be used that cuts off the air supply to the pump at the desired output pressure.

    摘要翻译： 旋转气动马达驱动的液压泵具有单独的压力和返回致动器以及180度异相的第一和第二级偏心驱动活塞，并且由马达通过齿轮减速单元驱动。 压力和返回致动器是开/关/比例阀，泵具有两个压力释放阀，一个可从泵的外部调节，用于使用者设定泵的压力极限。 在一定的输出压力极限之上，旁路阀将流过超过将第二级压缩室预先从第一级活塞预充气到由泵泵送的液压流体的弹性容器所需的流量。 为了使泵在一定的输出压力下停止，可以使用限压阀，以期望的输出压力切断泵的空气供应。