Fluid seal apparatus and method for dynamically controlling sealing-fluid pressure
    1.
    发明授权
    Fluid seal apparatus and method for dynamically controlling sealing-fluid pressure 有权
    用于动态控制密封流体压力的流体密封装置和方法

    公开(公告)号:US06298833B1

    公开(公告)日:2001-10-09

    申请号:US09545391

    申请日:2000-04-07

    IPC分类号: F02B4300

    摘要: A dynamic fluid sealing system for a fuel injection valve employs sealing-fluid to separate a gaseous fuel and a second fluid in the fuel injection valve, thereby preventing leakage of the gaseous fuel into the second fluid. A pressure-balancing system, which includes a pressure-balancing device, reduces the pressure differential between the sealing-fluid and the gaseous fuel used in the injection valve. At the same time, the pressure balancing system dynamically balances the sealing-fluid pressure such that the sealing-fluid pressure is equal to or slightly greater than the pressure of the gaseous fuel within the injection valve. The pressure differential between the gaseous fuel and the sealing-fluid may be maintained throughout the operating range of engine speeds, engine loads, and fuel cut-off conditions so as to prevent leakage of compressible gaseous fuel into the second fluid. The reduced pressure differential between the gaseous fuel and the sealing-fluid also reduces leakage of sealing-fluid into the gaseous fuel.

    摘要翻译: 用于燃料喷射阀的动态流体密封系统使用密封流体来分离燃料喷射阀中的气体燃料和第二流体,从而防止气体燃料泄漏到第二流体中。 包括压力平衡装置的压力平衡系统降低了密封流体和喷射阀中使用的气体燃料之间的压力差。 同时,压力平衡系统动态平衡密封流体压力,使得密封流体压力等于或略大于喷射阀内的气体燃料的压力。 气体燃料和密封流体之间的压差可以在发动机转速,发动机负荷和燃料切断条件的整个运行范围内保持,以防止可压缩的气体燃料泄漏到第二流体中。 气体燃料和密封流体之间的减小的压力差也减少了密封流体进入气体燃料的泄漏。

    Integrated GaAs active devices with improved optical coupling to dielectric waveguides

    公开(公告)号:US11719883B1

    公开(公告)日:2023-08-08

    申请号:US17675328

    申请日:2022-02-18

    IPC分类号: G02B6/122 G02B6/30

    CPC分类号: G02B6/1228 G02B6/305

    摘要: A device includes three elements fabricated on a common substrate. The first element includes an active waveguide structure having at least three sub-layers supporting a first optical mode. The second element has a passive waveguide structure supporting a second optical mode, and the third element, butt-coupled to the first element, has an intermediate waveguide structure supporting intermediate optical modes. One sub-layer in the active waveguide structure includes an n-contact layer, another sub-layer includes a p-contact layer, and a third sub-layer includes an active region. A tapered waveguide structure in at least one of the second and third elements facilitates efficient adiabatic transformation between the second optical mode and an intermediate optical mode. No adiabatic transformation occurs between that intermediate optical mode and the first optical mode. Mutual alignments of the three elements are defined using lithographic alignment marks that facilitate precise alignment between layers formed fabrication of the elements.

    WAVELENGTH-CONTROLLED TUNABLE CHIP-SCALE LASER

    公开(公告)号:US20230072680A1

    公开(公告)日:2023-03-09

    申请号:US17468953

    申请日:2021-09-08

    IPC分类号: H01S5/0687 H01S5/026

    摘要: A device comprises three elements, realized as photonic integrated circuits. The first element comprises a tunable semiconductor laser emitting light at a laser output wavelength. The second element comprises a wavelength selective element, coupled to the first element. The third element comprises N photodetectors where N>=2, coupled to the second element. Light coupled into the second element from the first element is de-multiplexed by the wavelength selective element such that a ratio of light power coupled from the second element into one of the N photodetectors to light power coupled from the second element into another one of the N photodetectors is a function of the laser output wavelength. The responses of the N photodetectors facilitate at least one of measurement and control of the laser output wavelength.

    LOW NOISE LASERS WITH RESONATOR FILTERS

    公开(公告)号:US20220200228A1

    公开(公告)日:2022-06-23

    申请号:US17128154

    申请日:2020-12-20

    申请人: Minh Tran

    发明人: Minh Tran

    摘要: A device comprises three elements. The first element, comprising an optical gain structure and a laser cavity mirror structure, couples light to the second element, comprising a phase tuner. The second element couples phase tuned light to the third element. The third element, comprising an optical resonator with first and second coupler/splitter structures, provides a primary optical output from the second coupler/splitter structure. Light coupled into the optical resonator through the first coupler/splitter structure and then coupled out of the optical resonator though the first coupler/splitter structure is injected back into the optical gain structure through the second element. Light coupled out of the optical resonator through the second coupler/splitter structure is provided as the primary optical output. Characteristic of the coupler/splitter structures and the optical resonator are selected such that the light injected back into the optical gain structure reduces linewidth, and noise in primary optical output is suppressed.

    BONE ANCHOR INSERTION DEVICE
    7.
    发明申请
    BONE ANCHOR INSERTION DEVICE 有权
    骨锚固装置

    公开(公告)号:US20110028997A1

    公开(公告)日:2011-02-03

    申请号:US12904534

    申请日:2010-10-14

    IPC分类号: A61B17/04

    摘要: A bone anchor insertion device comprises a handle, a nosepiece connected to a distal end of the handle, a bone anchor connected to the nosepiece, and an actuator disposed on the handle for deploying the bone anchor, which suture is also fixed to a portion of soft tissue to be attached to a portion of bone. A suture ratchet or tensioning mechanism is disposed in the handle for tensioning suture which is associated with the bone anchor. This mechanism permits precise tensioning, while also permitting one-handed operation, thereby allowing the practitioner to use his or her other hand for other activities, such as camera operation or the like.

    摘要翻译: 骨锚插入装置包括手柄,连接到手柄的远端的鼻梁,连接到鼻梁的骨锚和设置在手柄上用于展开骨锚的致动器,该缝合线也固定到 软组织附着于一部分骨。 缝合棘轮或张紧机构设置在手柄中,用于张紧与骨锚相关联的缝合线。 该机构允许精确的张紧,同时也允许单手操作,从而允许从业者将他或她的另一只手用于诸如相机操作等的其他活动。

    TISSUE EXCISION DEVICES AND METHODS
    10.
    发明申请
    TISSUE EXCISION DEVICES AND METHODS 审中-公开
    组织实验装置和方法

    公开(公告)号:US20070162061A1

    公开(公告)日:2007-07-12

    申请号:US11556213

    申请日:2006-11-03

    IPC分类号: A61B17/32

    摘要: A device for percutaneously excising tissue. In an embodiment, the device comprises an elongate body including a first member having a distal cutting end and a second member that slidingly engages the first member. In addition, the second member includes a tissue capture chamber having an opening facing the first member. Further, the first member is moveable relative to the second member between an opened position and a closed position, wherein the first member is disposed across the tissue capture chamber of the second member when the first member is in the closed position.

    摘要翻译: 用于经皮切除组织的装置。 在一个实施例中,该装置包括细长主体,其包括具有远端切割端的第一构件和滑动地接合第一构件的第二构件。 此外,第二构件包括具有面向第一构件的开口的组织捕获室。 此外,第一构件可相对于第二构件在打开位置和关闭位置之间移动,其中当第一构件处于关闭位置时,第一构件跨越第二构件的组织捕获室设置。