Limit switch with direct opening action

    公开(公告)号:US06518528B2

    公开(公告)日:2003-02-11

    申请号:US09832785

    申请日:2001-04-11

    CPC classification number: H01H3/16 H01H3/001

    Abstract: A switch comprises a first and second contacts, a plunger, a toggle bar, and a spanner. A preferred trip lever arrangement is used in which a trip lever transfers an actuating force from the plunger to the toggle bar, and the toggle bar is caused to move farther than the plunger to provide a short trip point. Swing arms that are acted upon through a series of rigid body force transfers allow an operator to manually force welded contacts to be broken in the event that the contacts become welded to a spanner or other components of the switch assembly.

    X-ray tube providing variable imaging spot size
    2.
    发明授权
    X-ray tube providing variable imaging spot size 失效
    X射线管提供可变成像光斑尺寸

    公开(公告)号:US06236713B1

    公开(公告)日:2001-05-22

    申请号:US09179805

    申请日:1998-10-27

    CPC classification number: H01J35/06 H01J3/12 H01J35/14

    Abstract: A variable spot size x-ray tube comprises a cathode having an electron emitting surface providing an electron beam that travels essentially along the tube axis of symmetry to an anode. The anode, spaced from the cathode, includes a target, the front surface of which is disposed at an oblique angle with respect to the axis of symmetry. The potential of the anode is generally positive with respect to that of the cathode. The cathode is heated to a temperature at which electrons are emitted by the thermionic emission process. Current from the cathode can be controlled by varying the cathode temperature if the cathode is operated in the temperature limited region. The incident electron beam forms a spot on the target surface whereupon x-rays are produced in response to impingement of the electron beam on the target. The x-rays propagate outwardly from the target spot through a vacuum window to form a beam of x-radiation outside the x-ray tube. An aperture grid is disposed between the cathode and the anode, and has a central aperture permitting the electron beam to pass therethrough. The aperture grid further has a variable voltage applied to it which may be positive, negative, or equal to the potential of the cathode. The voltage on the control grid is used to control the diameter of the electron beam which impinges upon the target. Specifically, the electron beam diameter varies in correspondence with the variable aperture grid voltage, and selective variation of the electron beam diameter results in a corresponding variation in size of the x-ray imaging spot.

    Abstract translation: 可变点尺寸x射线管包括具有电子发射表面的阴极,该电子发射表面提供基本上沿着管对称轴线向阳极行进的电子束。 与阴极间隔开的阳极包括靶,其前表面相对于对称轴线倾斜设置。 阳极的电位通常相对于阴极的电位为正。 将阴极加热到通过热离子发射过程发射电子的温度。 如果阴极在温度限制区域中运行,则可以通过改变阴极温度来控制来自阴极的电流。 入射的电子束在目标表面上形成一个点,因此响应于电子束撞击靶而产生X射线。 x射线从靶点向外传播通过真空窗口,以在x射线管外部形成x辐射束。 孔栅格设置在阴极和阳极之间,并且具有允许电子束通过的中心孔。 孔径栅格还具有施加到其上的可变电压,其可以是正的,负的或等于阴极的电位。 控制网格上的电压用于控制撞击目标的电子束的直径。 具体地,电子束直径与可变孔径栅极电压相对应地变化,并且电子束直径的选择性变化导致x射线成像光斑的尺寸的相应变化。

    Molecular sieve type gas separation systems
    3.
    发明授权
    Molecular sieve type gas separation systems 失效
    分子筛型气体分离系统

    公开(公告)号:US4594080A

    公开(公告)日:1986-06-10

    申请号:US702738

    申请日:1985-02-19

    Abstract: The concentration of a constituent gas in a product gas delivered by a molecular sieve type gas separation system 10 is controlled by a flueric partial pressure sensor 15 connected to a spill-valve 16 which is conduitly connected to a product gas delivery duct 13. The flueric partial pressure sensor 15 compares a reference bleed of supply gas with a sample bleed of product gas and outputs signals to control the spill-valve in spilling product gas from the delivery duct 13 so that the rate of flow of gas through adsorption beds 11 of the system 10 is controlled to provide product gas having a required concentration of the constituent gas.

    Abstract translation: 由分子筛式气体分离系统10输送的产物气体中的构成气体的浓度由连接到与产物气体输送管道13导管连接的溢流阀16的氟分压传感器15控制。 分压传感器15比较供应气体的参考泄漏与产品气体的样品泄漏,并输出信号,以控制溢出阀从输送管道13溢出产物气体,使得气体通过吸附床11的流量 控制系统10以提供具有组成气体所需浓度的产物气体。

    Device and method for the measurement of the thickness of a wet coating
    4.
    发明授权
    Device and method for the measurement of the thickness of a wet coating 失效
    用于测量湿涂层厚度的装置和方法

    公开(公告)号:US4377037A

    公开(公告)日:1983-03-22

    申请号:US235031

    申请日:1981-02-17

    Inventor: James C. Taylor

    CPC classification number: G01B5/066

    Abstract: A device and method for the measurement of the thickness of a wet coating, such as paint, on a substrate, the device comprising a frame with two legs having ends which may be pressed through the wet coating onto the substrate. A probe is mounted in the frame and is adjustable towards and away from the frame. An indicating scale is provided to show the position of the probe. The probe has a transparent or translucent tip so that the point at which contact is made with the wet coating may be observed. The method employs a calibration step by setting the device on an uncoated surface of the same shape as the coated surface, thereby avoiding errors due to wear of the device and curvature of the surface.

    Abstract translation: 一种用于测量衬底上的湿涂层(例如涂料)的厚度的装置和方法,该装置包括具有两个腿的框架,其具有可以通过湿涂层压到衬底上的端部。 探头安装在框架中,可以朝向和远离框架调节。 提供指示刻度以显示探头的位置。 探针具有透明或半透明的尖端,使得可以观察到与湿涂层接触的点。 该方法采用校准步骤,将装置设置在与涂覆表面相同形状的未涂覆表面上,从而避免由于装置磨损和表面曲率引起的误差。

    Mailer with return envelope
    5.
    发明授权
    Mailer with return envelope 失效
    具有退货信封的邮递员

    公开(公告)号:US4896823A

    公开(公告)日:1990-01-30

    申请号:US230032

    申请日:1988-08-09

    Inventor: James C. Taylor

    CPC classification number: B42D5/026

    Abstract: The C-fold mailer includes first, second and third panels foldable about transversely extending foldlines to form a mailer with return envelope. Adhesive is applied to one face of the sheet along opposite side margins. The second and third panels are folded and adhesively secured along three margins and the first panel is adhesively secured along the outside face of the third panel. By arranging the lines of adhesive relative to perforated lines along the sides and one end of the mailer, registering sides and end portions of the mailer may be removed while retaining the return envelope adhesively secured along three sides. An integral flap is provided whereby a portion of the first panel may be used as a remittance slip. The slip may be inserted into the return envelope, and the flap folded to seal the return envelope.

    Rheometer
    6.
    发明授权
    Rheometer 失效
    流变仪

    公开(公告)号:US4763512A

    公开(公告)日:1988-08-16

    申请号:US923317

    申请日:1986-10-14

    Inventor: James C. Taylor

    CPC classification number: G01N11/00 G01N11/16

    Abstract: A rheometer for measuring viscoelasticity with a complex rigidity function comprises a tube for holding the fluid, means for oscillating the tube in the direction of its axis, detector means for detecting the position of the sample of fluid, and an analyzer for relating the movement of the fluid sample to the movement of the drive to derive viscosity characteristics.

    Abstract translation: 用于测量具有复杂刚性功能的粘弹性的流变仪包括用于保持流体的管,用于在其轴线方向上振荡管的装置,用于检测流体样本的位置的检测器装置,以及用于将流体的运动 流体样品到驱动器的运动以得到粘度特性。

    Hearing aid with permanently adjusted frequency response
    8.
    发明授权
    Hearing aid with permanently adjusted frequency response 失效
    助听器具有永久调整的频率响应

    公开(公告)号:US5406633A

    公开(公告)日:1995-04-11

    申请号:US970628

    申请日:1992-11-03

    CPC classification number: H04R3/04 H04R25/356 H03H11/0422 H04R25/502 H04R25/70

    Abstract: A hearing aid is permanently adjusted to match prescribed amplification characteristics at predetermined frequencies. A single channel filter (24) includes three identical filter stages (60, 62, and 64) that are optionally cascaded in series. Each of the filter stages (60, 62, and 64) exhibits a frequency response curve having a first corner frequency (36) below which the magnitude of the response curve approaches a predetermined minimum value, a second corner frequency (38) above which the magnitude of the response curve approaches a maximum value, and a predetermined gain in magnitude between the minimum and maximum values.

    Abstract translation: 永久地调整助听器以匹配预定频率下的规定的放大特​​性。 单通道过滤器(24)包括可选地串联级联的三个相同的过滤器级(60,62和64)。 每个滤波器级(60,62和64)表现出具有第一转角频率(36)的频率响应曲线,低于该频率响应曲线的响应曲线的幅度接近预定的最小值,第二转角频率(38) 响应曲线的大小接近最大值,并且在最小值和最大值之间的幅度上的预定增益。

    Aid to hearing speech in a noisy environment
    9.
    发明授权
    Aid to hearing speech in a noisy environment 失效
    帮助在嘈杂的环境中听到演讲

    公开(公告)号:US5285502A

    公开(公告)日:1994-02-08

    申请号:US861301

    申请日:1992-03-31

    CPC classification number: H04R25/502 H04R2225/43

    Abstract: A signal processing circuit is incorporated into an audio reproducing device for suppressing noise while preserving distinctive features of speech. A noise detecting circuit includes a low pass filtering circuit (12) and a level detector (14). An output signal (C) from the detecting circuit controls a variable high pass filtering circuit (20) to attenuate a range of low frequencies of an input signal (A) proportional to the detected level of noise. The variable high pass filtering circuit exhibits a family of variable response curves (22, 24, and 26) that vary in slope below a common cut-off frequency (28) that is below a range of frequencies that convey a majority of second formant transitions between consonants and vowels.

    Abstract translation: 信号处理电路被并入到用于抑制噪声的音频再现装置中,同时保持语音的独特特征。 噪声检测电路包括低通滤波电路(12)和电平检测器(14)。 来自检测电路的输出信号(C)控制可变高通滤波电路(20),以衰减与检测到的噪声电平成比例的输入信号(A)的低频范围。 可变高通滤波电路表现出一系列可变响应曲线(22,24和26),其在低于传达大多数第二共振峰跃迁的频率范围之下的公共截止频率(28)下倾斜变化, 在辅音和元音之间。

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