公开(公告)号：US06727492B1

公开(公告)日：2004-04-27

申请号：US09759729

申请日：2001-01-12

申请人： Jun Ye ,  John L. Hall

发明人： Jun Ye ,  John L. Hall

IPC分类号： G01J104

CPC分类号： G01J3/42 ,  G01N21/39

摘要： An ac technique for cavity ringdown spectroscopy permits 1×10−10 absorption sensitivity with microwatt light power. Two cavity modes are provided temporally out of phase such that when one mode is decaying, the other mode is rising. When one of the modes probes intra-cavity absorption of a sample gas, heterodyne detection between the two modes reveals dynamic time constants associated with the cavity and the cavity plus intra-cavity absorption. The system and method provides a quick comparison between on-resonance and off-resonance modes and enables sensitivities that approach the shot-noise limit.

摘要翻译： 空穴沉降光谱的交流技术允许使用微瓦光功率获得1×10 -10的吸收灵敏度。 两个空腔模式在时间上相位提供，使得当一个模式衰减时，另一个模式正在上升。 当其中一种模式探测样品气体的腔内吸收时，两种模式之间的外差检测显示与腔和腔加腔内吸收相关的动态时间常数。 该系统和方法提供了一个快速比较的共振和非共振模式，并使敏感度接近射击噪声极限。

公开(公告)号：US5746988A

公开(公告)日：1998-05-05

申请号：US562508

申请日：1995-11-24

申请人： John L. Hall

发明人： John L. Hall

IPC分类号： A61G12/00 ,  A61L11/00 ,  B09B3/00 ,  A61L2/00

CPC分类号： A61L11/00

摘要： Infectious wastes from hospitals or other sources are sterilized in a chamber which is pivotable between a waste loading orientation, a sterilizing orientation and a waste dumping orientation. The chamber is attached to a framework by first and second pairs of pivot arms which are coupled to the sides of the chamber at spaced apart locations. An actuator swings the first arms upward to bring the chamber to the loading orientation and swings the arms downward to turn the chamber to the dumping orientation. The pivot arm arrangement causes the chamber as a whole to lower as it turns towards the loading orientation and to rise as it turns towards the dumping orientation. This reduces the amount of lifting of materials that is required during loading operations while also providing adequate clearance under the chamber for dumping operations. In one form, the chamber is translatable horizontally between a waste sterilizing location at which a chamber sealing door is situated and a loading and dumping location situated over a waste compactor intake compartment. A plurality of the chambers may be in side-by-side relationship and be loaded, operated and dumped at different times thereby enabling a continuous inflow of waste material.

摘要翻译： 来自医院或其他来源的传染性废物在可在废物装载方向，消毒方向和废物倾倒方向之间枢转的室中灭菌。 腔室通过第一和第二对枢转臂连接到框架，所述枢转臂在间隔开的位置联接到腔室的侧面。 执行器向上摆动第一臂以使腔室处于装载方向并向下摆动臂以将腔室转向倾倒方向。 枢转臂装置使得室整体在朝着装载方向转动时降低，并且随着朝向倾卸方向转动而升高。 这减少了在装载操作期间所需的材料的提升量，同时在室下提供足够的间隙用于倾倒操作。 在一种形式中，室可以在室密封门所在的废物消毒位置和位于废物压实机进气室之间的装载和倾倒位置之间水平地平移。 多个室可以并排关系，并且在不同时间被装载，操作和倾倒，从而能够连续地流入废料。

公开(公告)号：US5218426A

公开(公告)日：1993-06-08

申请号：US723950

申请日：1991-07-01

申请人： John L. Hall ,  Peter J. Martin ,  Mark L. Eickhoff ,  Michael P. Winters

发明人： John L. Hall ,  Peter J. Martin ,  Mark L. Eickhoff ,  Michael P. Winters

IPC分类号： G01J9/02 ,  G01N21/41 ,  G01N21/45

CPC分类号： G01N21/45 ,  G01J2009/0257 ,  G01N2021/4106

摘要： A highly accurate in-situ determination of the refractivity of an ambient atmosphere is disclosed, which determination is utilizable to enhance the accuracy of a quantity measurement. The system includes use of a refractometer exposed to an ambient atmosphere and having light directed thereto to form an optical interference fringe pattern having a dependence upon the refractivity of the ambient atmosphere. The fringe pattern is measured as a function of angle either by sequentially scanning a collimated input beam in angle while collecting and detecting the transmitted light, or by imaging (onto a multi-element detector) the angular exit space of the interferometer illuminated with a diverging input beam. The electrical output of the detector is processed to provide an output indicative of the index of refraction of the ambient atmosphere. The determined index of refraction is utilizable to enhance the accuracy of a quantity measurement, such as, for example, the distance measurement provided by a Fabry-Perot or displacement-measuring Michelson interferometer.

摘要翻译： 公开了对环境大气的折射率的高精度原位测定，该确定可用于提高量测量的精度。 该系统包括使用暴露于环境大气中的折射计，并且具有指向其的光以形成具有依赖于环境大气的折射率的光学干涉条纹图案。 通过在收集和检测透射光的同时顺序地扫描准直的输入光束，或者通过成像（在多元件检测器上）成像（以多元件检测器）照射的干涉仪的角出射空间，将条纹图案作为角度测量， 输入光束。 处理检测器的电输出以提供指示环境大气的折射率的输出。 确定的折射率可用于提高量测量的精度，例如由法布里 - 珀罗或位移测量迈克尔逊干涉仪提供的距离测量。

公开(公告)号：US4237948A

公开(公告)日：1980-12-09

申请号：US960553

申请日：1978-11-14

申请人： Ernest Jones ,  John L. Hall

发明人： Ernest Jones ,  John L. Hall

IPC分类号： B21H3/02 ,  B23G7/00 ,  F16B39/30

CPC分类号： B21H3/025 ,  F16B39/30

摘要： An externally screw threaded member of the self-locking, prevailing torque type has a series of convolutions of a standard thread form, and a locking series of convolutions of the same thread pitch as the standard series but of wider section and with incomplete thread crests. When the member is mated with an internal thread of standard form complementary to the standard series, the locking series of convolutions have an interference fit with the internal thread. In consequence of the interference fit one or both flank portions of each convolution of the locking series are caused to be swaged to some extent towards the crest region.

摘要翻译： 自锁主流扭矩型的外螺纹部件具有标准螺纹形式的一系列卷绕，以及与标准系列相同螺纹螺距的锁定系列，但是具有更宽的部分和不完整的螺纹牙顶。 当与标准系列互补的标准形式的内螺纹配合构件时，锁定系列的卷绕件与内螺纹具有过盈配合。 由于过盈配合，锁定系列的每个卷绕的一个或两个侧面部分被引导到一定程度上朝向顶部区域锻造。

公开(公告)号：USD245662S

公开(公告)日：1977-09-06

申请号：US638335

申请日：1975-12-08

申请人： John L. Hall

设计人： John L. Hall

公开(公告)号：US5772133A

公开(公告)日：1998-06-30

申请号：US537518

申请日：1995-10-02

申请人： John L. Hall

发明人： John L. Hall

IPC分类号： B02C23/12 ,  B02C18/22 ,  B02C18/40

CPC分类号： B02C23/12 ,  B02C19/0075 ,  Y10S241/606

摘要： A revolving trommel situated adjacent to a shredder has an annular screen which intercepts oversized or elongated fragments in the outflow from the shredder for return to the shredder. A first fragment guide directs the shredder outflow into the trommel and vanes in the trommel lift the oversized fragments to another fragment guide which extends out of the trommel to the shredder intake. In the preferred form, the trommel rests upon and is turned by a motor driven flexible continuous belt which carries fragments that pass through the screen upward to an elevated discharge chute. The apparatus is particularly useful for fragmentizing sterilized medical wastes.

摘要翻译： 位于切碎机附近的旋转筛选器具有环形筛网，其拦截来自粉碎机的流出物中的过大或细长碎片以返回到粉碎机。 第一个碎片指南将切碎机流出物引导到转筛机中，并且转盘中的叶片将过大的碎片提升到另一个碎片导向器，其延伸出转筛到切碎机入口。 在优选的形式中，转筛依靠并由电动机驱动的柔性连续带转动，所述带将碎片通过筛网向上运送到升高的排放槽。 该装置对于消毒的医疗废物的碎裂特别有用。

公开(公告)号：US4856009A

公开(公告)日：1989-08-08

申请号：US59076

申请日：1987-06-08

申请人： John L. Hall ,  Miao Zhu

发明人： John L. Hall ,  Miao Zhu

IPC分类号： G01S17/36 ,  H01S3/139

CPC分类号： G01S17/36 ,  H01S3/1392

摘要： The disclosure is directed to a method and apparatus for precisely controlling the frequency of a laser, and for precise control of distance. In a disclosed embodiment, a laser beam is split, modulated to obtain a frequency differential, and coupled to an interferometer which is designed to produce two processed beams having intensities that vary at the same ac frequency, but at a phase difference that is indicative of the laser frequency. The processed beams are converted to ac electrical signals which are coupled to phase control circuitry. The phase control circuitry determines the phase between the electrical signals and produces a control signal for controlling the laser frequency. Phase offset increments are introduced in the phase detection process, these phase offset increments resulting in controlled changes in the laser frequency. The laser frequency can be computed and read out as a function of the phase offset increments. In another embodiment, the control signal is used to accurately control a distance.

摘要翻译： 本公开涉及一种用于精确控制激光器频率并精确控制距离的方法和装置。 在所公开的实施例中，激光束被分离，调制以获得频率差，并耦合到干涉仪，干涉仪被设计成产生两个经处理的光束，其具有在相同交流频率处变化的强度，但是指示相位差 激光频率。 经处理的光束被转换成耦合到相位控制电路的交流电信号。 相位控制电路确定电信号之间的相位，并产生用于控制激光频率的控制信号。 在相位检测过程中引入相位偏移增量，这些相位偏移增量导致激光频率的受控变化。 激光频率可以作为相位偏移增量的函数计算和读出。 在另一个实施例中，控制信号用于精确地控制距离。

公开(公告)号：US4700150A

公开(公告)日：1987-10-13

申请号：US745309

申请日：1985-06-14

申请人： John L. Hall ,  Theodor W. Hansch

发明人： John L. Hall ,  Theodor W. Hansch

IPC分类号： G02F1/03 ,  G02F1/11 ,  H01S3/00 ,  H01S3/13

CPC分类号： G02F1/03 ,  G02F1/113 ,  H01S3/005

摘要： An external laser frequency stabilizer combines an acousto-optic frequency shifter and a fast electro-optic phase modulator. A compensating electronic delay line in a crossover network provides a near-ideal transducer response while keeping the voltage across the electro-optic crystal away from the amplifier limits.

摘要翻译： 外部激光频率稳定器结合了声光移频器和快速电光相位调制器。 交叉网络中的补偿电子延迟线提供近似理想的换能器响应，同时保持电光晶体两端的电压远离放大器限制。

公开(公告)号：US4476678A

公开(公告)日：1984-10-16

申请号：US229149

申请日：1981-01-28

申请人： John L. Hall

发明人： John L. Hall

IPC分类号： B66B13/26 ,  E05F15/00 ,  F15B15/00 ,  F15B15/26 ,  F16K31/122

CPC分类号： B66B13/26 ,  E05F15/41 ,  E05F15/565 ,  E05F15/72 ,  E05Y2900/104 ,  E05Y2900/51 ,  E05Y2900/531

摘要： The control mechanism is for pneumatic apparatus of the kind comprising a piston-and-cylinder motor coupled between two relatively-movable parts (such as door-leaves) for driving them, when energized, to a predetermined relative position. A pilot valve is actuated when required to switch the apparatus to an emergency mode by isolating the motor from its power source and discharging it into an emergency reservoir having a volume large compared with the maximum volume of gas in the motor. While the pilot valve is actuated, the relatively-movable parts are urged towards their predetermined relative positions by a force small compared with the normal operating force. The pilot valve may be arranged to operate operation of an emergency release bolt, on obstruction detected by a detector valve (in which case a timing reservoir provides time delay before full power is restored), on power failure, or as required.

摘要翻译： 该控制机构用于气动装置，该气动装置包括一个联动在两个可相对移动的部件（如门扇）之间的活塞和汽缸电机，用于在通电时将其驱动到预定的相对位置。 当需要时，通过将电动机与其电源隔离并将其排放到与电动机中的最大气体体积相比体积大的紧急储存器中，当需要将导向阀切换到紧急模式时，先导阀被致动。 当先导阀被致动时，通过与正常操作力相比较小的力将相对可移动的部件推向其预定的相对位置。 导向阀可以布置成操作紧急释放螺栓，在电源故障或根据需要时，由检测器阀检测到阻塞（在这种情况下定时储存器提供全功率恢复之前提供时间延迟）。

公开(公告)号：US4398293A

公开(公告)日：1983-08-09

申请号：US300363

申请日：1981-09-08

申请人： John L. Hall ,  Thomas M. Baer ,  Frank V. Kowalski

发明人： John L. Hall ,  Thomas M. Baer ,  Frank V. Kowalski

IPC分类号： H01S3/131 ,  H01S3/139 ,  H01S3/13

CPC分类号： H01S3/1396 ,  H01S3/131

摘要： Frequency stabilization is disclosed for a two-mode laser, such as a Zeemanaser. The emission frequency of the laser is servo-stabilized to the center of the atomic gain curve to provide a stable laser reference frequency that is independant of time and enviromental operating conditions. Stabilization in a longitudinal-field Zeeman laser is achieved by utilizing the mode-pulling effect which makes the frequency difference between the two circular polarization components have a parabolic dependence on the optical frequency of the laser. The detected intermode beat frequency from the laser is subjected to digital phase-sensitive, drift-free integration, utilizing a reversible counter, to provide a cumulative count with a rate of increase corresponding to the displacement of the average wavelength from the atomic center wavelength and an analog error-correction signal is generated therefrom which is coupled to the laser. The error-correction signal is processed and coupled to the piezoelectric crystal which controls the emission frequency of the laser for fast laser frequency correction control, and may be also processed and coupled to the heater coil on the laser for thermally providing slow frequency correctional control.

摘要翻译： 公开了针对诸如塞曼激光器的双模激光器的频率稳定化。 激光器的发射频率被伺服稳定在原子增益曲线的中心，以提供与时间和环境操作条件无关的稳定的激光参考频率。 纵向塞曼激光器的稳定性是通过利用拉模效应实现的，这使得两个圆偏振分量之间的频率差对激光的光频具有抛物线依赖性。 使用可逆计数器，来自激光器的检测到的模式间拍频率经受数字相位敏感，无漂移积分，以提供对应于平均波长从原子中心波长的位移的增加率的累积计数，以及 从其产生耦合到激光器的模拟错误校正信号。 误差校正信号被处理并耦合到压电晶体，压电晶体控制激光器的发射频率以进行快速激光频率校正控制，并且还可以处理并耦合到激光器上的加热器线圈，用于热提供慢频校正控制。