Method and apparatus for calibrating deflection in an oscilloscope
    1.
    发明授权
    Method and apparatus for calibrating deflection in an oscilloscope 失效
    用于校准示波器偏转的方法和装置

    公开(公告)号:US4677340A

    公开(公告)日:1987-06-30

    申请号:US685879

    申请日:1984-12-24

    CPC分类号: G01R35/002 G01R13/202

    摘要: The cathode-ray-tube beam deflection of an oscilloscope is automatically calibrated by photoelectrically detecting the intersection of the tube's electron beam with visible graticule lines on the tube's faceplate. An input signal is compared, at the time of intersection, with stored values representative of the graticule lines, and the deflection amplifier gain of the oscilloscope is adjusted until the graticule lines properly represent the measurement of the input signal.

    摘要翻译: 示波器的阴极射线管束偏转通过光电检测管的电子束与管的面板上的可见刻度线的交叉来自动校准。 在交叉时将输入信号与表示刻度线的存储值进行比较,并且调整示波器的偏转放大器增益,直到刻度线正确地表示输入信号的测量值。

    Device for separating solids from air
    5.
    发明授权
    Device for separating solids from air 有权
    用于从空气中分离固体的装置

    公开(公告)号:US06672461B2

    公开(公告)日:2004-01-06

    申请号:US10033286

    申请日:2001-12-26

    IPC分类号: B04C306

    CPC分类号: B65G53/60

    摘要: An air material separator may be used to separate scrap from a conveying air flow while having a relatively low weight and short height so that the separator may be positioned within today's single-story manufacturing or processing facilities. The air material separator of the invention includes a generally cylindrical inlet chamber having a spiral wall that directs the inlet flow circumferentially and downwardly. An outlet chamber is positioned below the inlet chamber and includes a conical, perforated wall that allows the conveying air flow to escape through the perforated wall. The scrap carried by the conveying air flow cannot pass through the perforated wall and moves down and out an outlet at the bottom of the conical wall. The overall height of the device is substantially less than prior art air material separators.

    摘要翻译: 空气材料分离器可以用于将废料与输送空气流分离,同时具有相对较低的重量和短的高度,使得分离器可以位于当今的单层制造或加工设施内。 本发明的空气材料分离器包括大致圆柱形的入口室,其具有螺旋壁,其引导入口流周向和向下。 出口室位于入口室下方并且包括允许输送空气流通过穿孔壁逸出的圆锥形穿孔壁。 由输送空气流携带的废料不能通过穿孔壁并向下移动并离开锥形壁底部的出口。 装置的整体高度明显小于现有技术的空气材料分离器。

    Self-centering self-aligning anti-friction rotor and screw
    6.
    发明授权
    Self-centering self-aligning anti-friction rotor and screw 失效
    自定心自调心抗磨转子和螺丝

    公开(公告)号:US4274296A

    公开(公告)日:1981-06-23

    申请号:US21626

    申请日:1979-03-19

    IPC分类号: F16H25/22 F16H25/24 F16H1/18

    摘要: A self-centering, self-aligning, anti-friction power transmission mechanism comprising a rotor cooperable with a screw to convert rotary movement to linear movement and vice versa. The rotor has one or more convolutions of rollers having their axes arranged in a helical path of the same pitch as the screw thread with their inner ends positioned to have non-scuffing, non-slipping rolling line contact with the screw thread, a result obtained by off-setting each roller axis downwardly along the helix from the line of contact by a distance such that the line of contact and the rotor axis lie in a common plane parallel to the roller axis. The screw thread is preferably of the Acme type with a sidewall taper initially slightly less than the taper of the roller ends in contact therewith whereby, in use under load, the rollers cause cold flow and work hardening of the thread sidewall thereby substantially increasing the length of the line of contact between the rollers and the screw thread.

    摘要翻译: 一种自定心自对准的抗摩擦动力传递机构,包括与螺杆配合的转子,以将旋转运动转换为线性运动,反之亦然。 转子具有一个或多个卷轴,其辊的轴线布置成与螺纹相同螺距的螺旋路径,其内端被定位成具有与螺纹的无磨损,不滑动的轧制线接触,获得的结果 通过沿着接触线沿着螺旋线向下将每个辊轴向下偏移一定距离,使得接触线和转子轴线位于平行于辊轴线的公共平面中。 螺纹最好是具有侧壁锥形的Acme型,其初始略小于与其接触的辊端的锥度,由此在使用中负载时,辊引起螺纹侧壁的冷流和加工硬化,从而基本上增加了长度 的辊和螺纹之间的接触线。