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    • 12. 发明申请
    • Landing gear strut damper, and gear with independent struts comprising same
    • 起落架支柱阻尼器和具有独立支柱的齿轮组成
    • US20060163427A1
    • 2006-07-27
    • US10541948
    • 2003-12-29
    • Dominique DucosIan BennettDavid Smart
    • Dominique DucosIan BennettDavid Smart
    • B64C25/58
    • B64C25/58B64C25/60B64C2025/008B64C2025/125
    • A damper for an airplane landing gear leg comprises a main strut (11) and a rod piston (13) co-operating with the strut (11) to define a main chamber (15) and annular chamber (16) for hydraulic fluid, and presenting internally two adjacent chambers (19, 20) that are isolated from each other by a separator piston (21). The damper (10) further comprises a first secondary strut (26) telescopically slidable on the above-mentioned rod piston (13), and a second secondary strut (37) telescopically slidable on the other end of the first secondary strut (26). The two second annular chambers (31, 40) as defined in this way are respectively connected to associated control circuits thus enabling the total length of the damper to be shortened or lengthened respectively for the purpose of causing the landing gear to contract or to be extended.
    • 用于飞机起落架的减震器包括与支柱(11)配合的主支柱(11)和杆活塞(13),以限定用于液压流体的主室(15)和环形室(16),以及 在内部呈现通过分离器活塞(21)彼此隔离的两个相邻的室(19,20)。 阻尼器(10)还包括可在上述杆式活塞(13)上可伸缩滑动的第一辅助支柱(26)和在第一辅助支柱(26)的另一端可伸缩滑动的第二辅助支柱(37)。 以这种方式定义的两个第二环形腔室(31,40)分别连接到相关联的控制回路,从而能够使阻尼器的总长度分别缩短或延长,以使起落架收缩或延伸 。
    • 15. 发明授权
    • Apparatus, systems and methods for bypassing a flow control device
    • 用于旁路流量控制装置的装置,系统和方法
    • US09260938B2
    • 2016-02-16
    • US13814930
    • 2012-04-18
    • Luke William HoldermanDavid Smart
    • Luke William HoldermanDavid Smart
    • E21B34/08E21B34/06E21B34/00
    • E21B34/08E21B23/006E21B34/063E21B43/12E21B2034/007
    • A bypass assembly for use in a downhole tool comprises a chamber, a first fluid port in fluid communication with the chamber, a second fluid port in fluid communication with the chamber, a flow restrictor disposed in a first flow path between the first fluid port and the second fluid port, a piston moveable in a first direction by the application of a first fluid pressure, a biasing member, and a restraining member disposed adjacent to the piston. The biasing member biases the piston to move in a second direction opposite the first direction, and the restraining member is actuated by movement of the piston in the first direction in response to a predetermined fluid pressure. Movement of the piston in the second direction to a predetermined position configures the bypass assembly to divert fluid flow around the flow restrictor along a second flow path.
    • 用于井下工具的旁路组件包括腔室,与腔室流体连通的第一流体端口,与腔室流体连通的第二流体端口,设置在第一流体通道中的限流器,位于第一流体端口和 所述第二流体端口,通过施加第一流体压力,偏压构件和邻近所述活塞设置的限制构件在第一方向上可移动的活塞。 偏置构件偏压活塞沿与第一方向相反的第二方向移动,并且约束构件通过响应于预定流体压力沿第一方向的活塞的运动而致动。 活塞在第二方向上移动到预定位置构成旁路组件以沿着第二流动路径转移围绕限流器的流体流动。
    • 16. 发明申请
    • Apparatus, Systems and Methods for Bypassing a Flow Control Device
    • 用于绕过流量控制装置的装置,系统和方法
    • US20130277059A1
    • 2013-10-24
    • US13814930
    • 2012-04-18
    • Luke William HoldermanDavid Smart
    • Luke William HoldermanDavid Smart
    • E21B34/14
    • E21B34/08E21B23/006E21B34/063E21B43/12E21B2034/007
    • A bypass assembly for use in a downhole tool comprises a chamber, a first fluid port in fluid communication with the chamber, a second fluid port in fluid communication with the chamber, a flow restrictor disposed in a first flow path between the first fluid port and the second fluid port, a piston moveable in a first direction by the application of a first fluid pressure, a biasing member, and a restraining member disposed adjacent to the piston. The biasing member biases the piston to move in a second direction opposite the first direction, and the restraining member is actuated by movement of the piston in the first direction in response to a predetermined fluid pressure. Movement of the piston in the second direction to a predetermined position configures the bypass assembly to divert fluid flow around the flow restrictor along a second flow path.
    • 用于井下工具的旁路组件包括腔室,与腔室流体连通的第一流体端口,与腔室流体连通的第二流体端口,设置在第一流体通道中的限流器,位于第一流体端口和 所述第二流体端口,通过施加第一流体压力,偏压构件和邻近所述活塞设置的限制构件在第一方向上可移动的活塞。 偏置构件偏压活塞沿与第一方向相反的第二方向移动,并且约束构件通过响应于预定流体压力沿第一方向的活塞的运动而致动。 活塞在第二方向上移动到预定位置构成旁路组件以沿着第二流动路径转移围绕限流器的流体流动。