Solenoid-operated pressure control valve
    71.
    发明授权
    Solenoid-operated pressure control valve 失效
    电磁式压力控制阀

    公开(公告)号:US4838313A

    公开(公告)日:1989-06-13

    申请号:US198405

    申请日:1988-05-25

    IPC分类号: G05D16/20

    CPC分类号: G05D16/2013 Y10T137/86622

    摘要: In a solenoid-operated pressure control valve having a pressure modulating section and a magnetic section, the pressure modulating section includes a valve sleeve having an application port, an output port, a feedback port having throttle passage, and a drain port, and a spool being movable in the valve sleeve; and the magnetic section includes a coil assembly and a rod. According to the above structure a force developed from the magnetic section, a force developed by a spring and an output pressure feedback force are applied and balanced, so that an application pressure is so modulated that the application pressure is taken out as an output pressure corresponding to input electric level to the magnetic section. Furthermore, the spool is made to have at least two lands neighboring on each other and to have different diameters, a feedback port which is directly connected to the area between the different diameters is made on the valve sleeve, and the output pressure is so feedbacked that its volume corresponds to the difference of diameters by applying the pressure from the output port.

    摘要翻译: 在具有压力调节部和磁性部的电磁式压力控制阀中,压力调节部包括具有施加口,输出口,具有节流通路的反馈口和排出口的阀套, 可在阀套中移动; 并且磁性部分包括线圈组件和杆。 根据上述结构,从磁性部分产生的力,由弹簧产生的力和输出压力反馈力被施加和平衡,使得施加压力被调节,使得施加压力被取出作为对应的输出压力 以向磁性部分输入电平。 此外,阀芯被制成具有彼此相邻并且具有不同直径的至少两个平台,在阀套上形成直接连接到不同直径之间的区域的反馈端口,并且输出压力被反馈 其体积通过施加来自输出端口的压力而对应于直径差异。

    Method and apparatus for inspecting printed circuit board
    72.
    发明授权
    Method and apparatus for inspecting printed circuit board 失效
    检查印刷电路板的方法和装置

    公开(公告)号:US4758782A

    公开(公告)日:1988-07-19

    申请号:US905922

    申请日:1986-09-10

    申请人: Kouji Kobayashi

    发明人: Kouji Kobayashi

    摘要: Method and apparatus for inspecting a printed circuit board wherein scanned image data are digitized and analyzed according to a feature extraction method and a mutual comparison method. The result of both of the analysis methods is combined with predetermined conditions to control output devices including a CRT display or a marking device. The two complementary methods compensate each others drawbacks so that the reliability of inspection can be improved.

    摘要翻译: 根据特征提取方法和相互比较方法对扫描图像数据进行数字化和分析的印刷电路板的检查方法和装置。 两种分析方法的结果与预定条件相结合,以控制包括CRT显示器或标记装置的输出装置。 这两种互补方法相互补偿的缺点,从而可以提高检查的可靠性。

    Thrust cylindrical roller bearing
    79.
    发明授权
    Thrust cylindrical roller bearing 有权
    推力圆柱滚子轴承

    公开(公告)号:US07736066B2

    公开(公告)日:2010-06-15

    申请号:US11817725

    申请日:2006-03-02

    IPC分类号: F16C33/46

    摘要: A diameter dimension of a chamfer 11 which is formed on axial end faces of a cylindrical roller 8 which is retained in each pocket 7 of a cage 2 whose axial positioning is realized by a roller guide at a portion which lies closer to an outside diameter side thereof is made such that a central flat surface 9 which lies on an inside diameter side of the chamfer 11 is not exposed from an external surface of an outside diameter side flat plate portion 14. Then, a difference between a minimum value ΔB of an amount by which the cylindrical roller 8 projects from the external surface of the outside diameter side flat plate portion 14 and a dimension W11 of the chamfer 11 with respect to a diameter direction thereof is made smaller than a thickness T2 of the cage 2.

    摘要翻译: 形成在圆柱滚子8的轴向端面上的倒角11的直径尺寸,圆柱滚子8保持在保持架2的每个凹部7中,轴承定位通过滚子引导件在靠近外径侧的部分 使得位于倒角11的内径侧的中央平面9不从外径侧平板部14的外表面露出。然后,最小值Dgr; B之间的差 圆筒滚子8从外径侧平板部14的外表面突出的量和倒角11相对于其直径方向的尺寸W11小于保持架2的厚度T2。