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27 条记录 (耗时 0.029 秒)

    Ultrasonic continuous wave particle monitor
    1.
    发明授权
    Ultrasonic continuous wave particle monitor 失效
    超声波连续波粒子监测仪

    公开(公告)号：US4015464A

    公开(公告)日：1977-04-05

    申请号：US551913

    申请日：1975-02-21

    申请人： James G. Miller ,  Richard E. Clark ,  Mark S. Conradi ,  Dennis R. Dietz ,  Joseph S. Heyman

    发明人： James G. Miller ,  Richard E. Clark ,  Mark S. Conradi ,  Dennis R. Dietz ,  Joseph S. Heyman

    IPC分类号： G01N29/032 ,  G01N29/036 ,  G01N29/02 ,  G01N15/00

    CPC分类号： G01N29/032 ,  G01N29/036 ,  G01N2291/012 ,  G01N2291/015 ,  G01N2291/02416 ,  G01N2291/02433 ,  G01N2291/0421

    摘要： Apparatus for sensing particles in a fluid medium comprising an ultrasonic resonant cavity for containing a fluid medium. A first transducer on one side of the cavity continuously propagates thereacross ultrasonic compressional waves whose phase and amplitude are perturbed by the presence of particles in the fluid medium. A second transducer positioned on the opposite side of the cavity from the first transducer substantially parallel to and in registry therewith receives the ultrasonic waves and converts them to rf electric waves of the same frequency, the rf electric waves having their phases and amplitudes modulated in response to any perturbations in the ultrasonic waves. The rf waves are amplified and fedback to the first transducer thereby to establish an oscillatory circuit. An attenuator in the oscillatory circuit causes its operation to be marginally oscillatory whereby small changes in the amplitude of the rf waves caused by any perturbations in the ultrasonic waves produce relatively large changes in the amplitude thereof. A detector responsive to perturbations in the rf wave demodulates the amplified rf wave to produce signals indicative of the presence of particles in the fluid medium. Thus, enhanced sensitivity to small changes in the ultrasonic properties of the fluid medium caused by the presence of particles therein is achieved.

    摘要翻译： 用于感测流体介质中的颗粒的装置，包括用于容纳流体介质的超声谐振腔。 空腔一侧的第一个传感器连续传播超声波压缩波，其相位和幅度受流体介质中颗粒的存在扰动。 位于与第一换能器相反侧的与第一换能器相反侧的第二换能器基本上平行于并与之对准地接收超声波并将其转换成具有相同频率的rf电波，其中rf电波具有响应的调制幅度 超声波中的任何扰动。 rf波被放大并反馈到第一个换能器，从而建立振荡电路。 振荡电路中的衰减器使其操作略微振荡，从而由超声波中的任何扰动引起的rf波的振幅的小的变化产生其幅度相对较大的变化。 响应于rf波中的扰动的检测器解调放大的rf波以产生指示流体介质中颗粒存在的信号。 因此，实现了由其中存在颗粒引起的流体介质的超声波特性的小变化的增强的敏感性。

    Zeolite octane additive
    3.
    发明授权
    Zeolite octane additive 失效
    沸石辛烷值添加剂

    公开(公告)号：US5302567A

    公开(公告)日：1994-04-12

    申请号：US787170

    申请日：1991-11-04

    申请人： James G. Miller ,  Robert R. Gatte

    发明人： James G. Miller ,  Robert R. Gatte

    IPC分类号： B01J29/08 ,  B01J29/40 ,  B01J29/65 ,  B01J29/70 ,  B01J29/80 ,  C10G11/05 ,  C10G35/095 ,  B01J29/06

    CPC分类号： C10G11/05 ,  B01J29/40 ,  B01J29/405 ,  B01J29/80 ,  B01J2229/26 ,  B01J2229/36 ,  B01J2229/42 ,  B01J29/65 ,  B01J29/70

    摘要： When a zeolite additive composition of a medium-pore zeolite with a Constraint Index from about 1 to about 12 and a silica to alumina mole ratio greater than about 12 is added to a conventional cracking catalyst dispersed in an inorganic matrix, the octane will be improved, but there will be a yield loss in the amount of gasoline produced. An improvement in that catalyst system is obtained by partially exchanging the medium-pore zeolite additive with cations from one or more elements of Group IA, Group IIA or Group IIIA of the Periodic Table. The octane number of the gasoline-range product of an FCC process is still improved while the amount of the gasoline yield loss typically observed for such octane-enhancing additives is reduced.

    摘要翻译： 当分散在无机基质中的常规裂化催化剂中加入约1至约12约束指数约为约12的中孔沸石和二氧化硅与氧化铝的摩尔比大于约12的沸石添加剂组合物时，辛烷值将提高 ，但产生的汽油量会产生损失。 通过将中孔沸石添加剂与元素周期表中IA族，IIA族或IIIA族的一种或多种元素的阳离子部分交换而获得催化剂体系的改进。 FCC工艺的汽油范围产物的辛烷值仍然提高，而对于这种辛烷值增强添加剂通常观察到的汽油产率损失量降低。

    Underwater IR communication system
    7.
    发明授权
    Underwater IR communication system 失效
    水下红外通信系统

    公开(公告)号：US5267070A

    公开(公告)日：1993-11-30

    申请号：US878697

    申请日：1992-05-05

    申请人： Ian H. Stewart ,  James G. Miller ,  Roman Kruchowy

    发明人： Ian H. Stewart ,  James G. Miller ,  Roman Kruchowy

    IPC分类号： H04B13/02 ,  H04B10/00

    CPC分类号： H04B13/02

    摘要： An underwater communications system comprising first and second communications modules which transmit and receive data utilizing infrared radiation. Each module has a transmitter/receiver which converts each received data byte to RS-232 formatted data for transmission to a computer. Each communication module also includes a timer for providing a forty kilohertz pulsed signal to modulation circuitry which passes the pulsed signal through the modulation circuitry when a logic zero is supplied to the modulation circuitry and which inhibits the pulsed signal when a logic one is supplied to the circuitry. That portion of the pulsed signal which passes through the modulation circuitry is provided to a light emitting diode which transmits a pulsed burst of infrared radiation to an infrared light detecting unit within the second communications module. The infrared light detecting unit then provides a logic zero at its output when its receives a pulsed burst of infrared radiation for time period of approximately six hundred microseconds and a logic one when the unit fails to detect a pulsed burst of infrared radiation for a time period of six hundred microseconds.

    摘要翻译： 一种水下通信系统，包括利用红外辐射发射和接收数据的第一和第二通信模块。 每个模块都有一个发送器/接收器，用于将每个接收的数据字节转换为RS-232格式的数据，以传输到计算机。 每个通信模块还包括一个定时器，用于向调制电路提供四十kHz的脉冲信号，该调制电路当逻辑零被提供给调制电路时将脉冲信号通过调制电路，并且当逻辑1被提供给 电路。 通过调制电路的脉冲信号的该部分被提供给发射二极管，该发光二极管将脉冲的红外辐射脉冲发射到第二通信模块内的红外光检测单元。 然后，当红外光检测单元在其接收到大约六百微秒的时间周期的脉冲脉冲串的红外辐射时，在其输出端提供逻辑零，当该单元在一段时间内不能检测到脉冲的红外辐射时，逻辑1 六百微秒。