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    • 1. 发明授权
    • Diode laser-pumped magnetometer
    • 二极管激光泵浦磁力仪
    • US06472869B1
    • 2002-10-29
    • US09883166
    • 2001-06-18
    • Bernard L. UpschulteSteven J. DavisLudwig C. BallingJohn J. Wright
    • Bernard L. UpschulteSteven J. DavisLudwig C. BallingJohn J. Wright
    • G01V300
    • G01R33/26
    • A diode laser-pumped magnetometer includes a diode laser that emits a polarized pumping laser beam with resonant optical radiation; and a K-cell through which a magnetic field is manifested from an independent source, the K-cell containing atoms with a dipole experiencing a torque due to the magnetic field. The atoms are excited by the resonant optical radiation of the pumping laser beam and periodically emitting a response radiation as they return to ground state such that the response radiation includes photons that indicate one unit of angular momentum indicative of the torque due to the magnetic field. Finally, a photodetector serves as a means for measuring the response radiation of the K-cell to indicate thereby a measure of the magnetic field in the K-cell from the independent magnetic source.
    • 二极管激光泵浦磁力计包括发射具有共振光辐射的偏振激光激光束的二极管激光器; 以及从独立的源表现出磁场的K电池,K电池含有具有由于磁场而产生转矩的偶极子的原子。 原子被泵浦激光束的谐振光辐射激发,并且当它们返回到基态时周期性地发射响应辐射,使得响应辐射包括指示由于磁场引起的转矩的一个角度动量单位的光子。 最后,光检测器用作测量K电池的响应辐射的装置,从而指示来自独立磁源的K电池中的磁场的测量。
    • 9. 发明授权
    • Fail-safe electric actuator
    • 故障安全电动执行器
    • US4757684A
    • 1988-07-19
    • US252022
    • 1981-04-08
    • John J. Wright
    • John J. Wright
    • F16K31/04G05G15/00F15B15/12
    • F16K31/047G05G15/00Y10S60/911
    • A fail-safe electric actuator, for use with a control mechanism such as a valve, is disclosed. The actuator device eliminates the possibility of the control mechanism being locked in operative position by the interruption of electric power, by automatically and mechanically returning the control mechanism to its inopertive position as soon as current is cut off. This is accomplished by the release of a torsion spring, wound previously by the rotation of a fluid-driven vaned torque actuator in turning both the control-mechanism and the electric fail-safe actuator into operative position.
    • 公开了一种用于诸如阀门的控制机构的故障安全电动致动器。 致动器装置消除了通过电力中断将控制机构锁定在操作位置的可能性,一旦电流被切断,则通过自动和机械地将控制机构返回到其不起作用的位置。 这是通过释放扭力弹簧来实现的,扭力弹簧先前通过流体驱动的无转矩扭矩致动器的旋转而被卷绕,从而将控制机构和电气故障安全致动器转动到操作位置。