Off-Axis Silicon Carbide Substrates
    14.
    发明申请
    Off-Axis Silicon Carbide Substrates 有权
    离轴碳化硅基板

    公开(公告)号:US20110220915A1

    公开(公告)日:2011-09-15

    申请号:US12966753

    申请日:2010-12-13

    Abstract: A method of epitaxial growth of a material on a crystalline substrate includes selecting a substrate having a crystal plane that includes a plurality of terraces with step risers that join adjacent terraces. Each terrace of the plurality or terraces presents a lattice constant that substantially matches a lattice constant of the material, and each step riser presents a step height and offset that is consistent with portions of the material nucleating on adjacent terraces being in substantial crystalline match at the step riser. The method also includes preparing a substrate by exposing the crystal plane; and epitaxially growing the material on the substrate such that the portions of the material nucleating on adjacent terraces merge into a single crystal lattice without defects at the step risers.

    Abstract translation: 在晶体衬底上外延生长材料的方法包括:选择具有晶面的衬底,所述晶体平面包括多个梯田,其具有连接相邻梯田的台阶梯。 多个或梯田中的每个平台呈现基本匹配材料的晶格常数的晶格常数,并且每个梯级提升层具有台阶高度和偏移,其与在相邻台阶上成核的材料的部分一致, 一步提升。 该方法还包括通过暴露晶面制备衬底; 并且在衬底上外延生长材料,使得在相邻梯田上成核的材料部分合并成单层晶格,而在台阶立管上没有缺陷。

    Nut runner for removing and installing reactor pressure vessel head
closure nuts
    16.
    发明授权
    Nut runner for removing and installing reactor pressure vessel head closure nuts 失效
    用于拆卸和安装反应堆压力容器头部闭合螺母的螺母扳手

    公开(公告)号:US5692418A

    公开(公告)日:1997-12-02

    申请号:US449440

    申请日:1995-05-24

    CPC classification number: B25B23/0078 B23P19/06 B25B21/00 B25B21/002

    Abstract: A nut runner tool is used to engage, turn, capture and lift the RPV head closure nuts from the RPV studs. The tool is also used to capture, lift and transport the nuts from the storage tray to the RPV head closure studs. The nut runner system enables a single operator to remove and install head closure nuts quickly and safely. The nut runner is powered by a remotely operated air driver. The reaction torque is transferred safely through the tool into the top of the closure stud. The air driver unthreads the nut, then a nut holding device is actuated, and the nut and tool are lifted from the top of the stud with a hoist attached to a trolley. The nut and tool are moved radially from the stud location to the storage position in the nut rack. When positioned over the storage location, the lowering of the nut into the rack is performed by the hoist, eliminating the need to manhandle the nuts into and out of the storage rack. After lowering the nut into the nut rack, the nut holding device is released and the nut runner is moved to the next location. The reverse of this process reinstalls the nuts.

    Abstract translation: 螺母扳手工具用于从RPV螺柱上接合,转动,捕获和提起RPV头部闭合螺母。 该工具还用于捕获,提起并将螺母从存储托盘运输到RPV头盖螺栓。 螺母扳手系统使单个操作员可以快速,安全地拆卸和安装头部闭合螺母。 螺母扳手由远程操作的空气驱动器供电。 反作用扭矩通过工具安全地传递到闭合螺柱的顶部。 空气驱动器拧紧螺母,然后启动螺母固定装置,螺母和工具从安装在手推车上的起重机从螺柱的顶部提升。 螺母和工具从螺柱位置径向移动到螺母架中的存储位置。 当定位在存储位置上时,通过提升机将螺母下降到机架中,从而不需要将螺母处理和卸出存储架。 将螺母放入螺母架后,松开螺母固定装置,将螺母扳手移至下一个位置。 这个过程的相反重新安装了坚果。

    Latch apparatus and method
    19.
    发明授权
    Latch apparatus and method 失效
    锁定装置和方法

    公开(公告)号:US07363788B2

    公开(公告)日:2008-04-29

    申请号:US10935746

    申请日:2004-09-07

    Abstract: A latch assembly having at least one control element having a first path of motion in which a ratchet is moved to an unlatched position and a second path of motion in which the ratchet is not so moved, the path of motion taken by the control element dependent upon whether an engagement element is engaged with the control element or disengaged therefrom. Preferably, the control element moves the ratchet by contact with a pawl which itself can be engaged with the ratchet. In a preferred embodiment of the present invention, the control element can be partially or fully actuated through its second path of motion while still being engagable with its engagement element. If already partially or fully actuated through its second path of motion, the engagement element is preferably movable into contact with the control element and can move the control element to its first path of motion. The latch assembly can have a second control element also having first and second paths of motion determined at least partially upon whether an engagement element is engaged with the second control element or disengaged therefrom. The second control element can be connected to the first engagement element to move the first engagement element into and out of engagement with the first control element when the second control element is actuated in its engaged state.

    Abstract translation: 具有至少一个控制元件的闩锁组件具有第一运动路径,其中棘轮移动到未锁定位置,第二运动路径中棘轮不被移动,控制元件依赖的运动路径 接合元件是否与控制元件接合或脱离接合元件。 优选地,控制元件通过与本身可与棘轮接合的棘爪接触而移动棘轮。 在本发明的优选实施例中,控制元件可以通过其第二运动路径部分地或完全地致动,同时仍然可以与其接合元件接合。 如果已经通过其第二运动路径部分地或完全地致动,则接合元件优选地可移动地与控制元件接触并且可以将控制元件移动到其第一运动路径。 闩锁组件可以具有第二控制元件,该第二控制元件还具有至少部分地基于接合元件是否与第二控制元件接合或与其脱离接合而确定的第一和第二运动路径。 当第二控制元件在其接合状态下被致动时,第二控制元件可以连接到第一接合元件以将第一接合元件移动到与第一控制元件接合和脱离接合。

    Precision clamping device with digitally programmable load
    20.
    发明授权
    Precision clamping device with digitally programmable load 失效
    具有数字可编程负载的精密夹紧装置

    公开(公告)号:US5810340A

    公开(公告)日:1998-09-22

    申请号:US711698

    申请日:1996-09-06

    CPC classification number: B25B5/163 B25B5/06 B25B5/061 B25B5/16

    Abstract: A linear actuator is used to push a spring-loaded ram. The loading force of the spring against a stationary workpiece is calibrated with the displacement of the ram once the load exceeds the spring preset value. At a preset loading position, an electrical contact opens, indicating that the spring load has reached or exceeded the preset value. A mechanical stop, acting in conjunction with the stall characteristics of the linear actuator, prevents the operating range from being exceeded. This device has applications where precise standoff from a surface, the application of a precise force to that surface, and a controlled rate of the application of the force is needed.

    Abstract translation: 线性致动器用于推动弹簧加载的压头。 一旦载荷超过弹簧预设值,弹簧抵靠固定工件的载荷就会被校准。 在预设的加载位置,电气触点打开,表明弹簧负载已达到或超过预设值。 与线性致动器的失速特性一起作用的机械止动件防止超出工作范围。 该装置具有从表面精确隔离,向该表面施加精确力的应用以及需要施加力的受控速率的应用。

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