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    Closed-loop fluidic analog accelerometer
    1.
    发明授权
    Closed-loop fluidic analog accelerometer 失效
    闭环流体模拟加速度计

    公开(公告)号：US3672231A

    公开(公告)日：1972-06-27

    申请号：US3672231D

    申请日：1969-07-18

    Applicant: GEN ELECTRIC

    Inventor： SHINN JEFFREY N ,  RINGWALL CARL G

    IPC: F15C1/00 ,  G01P15/03 ,  G01P15/02

    CPC classification number: F15C1/005 ,  G01P15/038

    Abstract: Apparatus for sensing acceleration and generating an analog-type pressurized fluid signal proportional to the magnitude of the associated event. Linear acceleration as sensed by a flexuremounted inertial mass including a hollow, elongated spring member of the cantilever beam type having a first end rigidly fixed in position and a second unsupported end upon which the acceleration-sensitive inertial mass is mounted. The hollow portion of the spring member issues a fluid jet from the second unsupported end directed at fluid receivers, the flexure of the spring member causing distribution of the jet between the receivers in proportion to the magnitude of the acceleration. Fluid amplifier circuitry provides high gain and stabilization in the loop comprising the spring-mass device, receivers, fluid amplifier circuitry and a negative feedback circuit to obtain closed-loop null-type operation producing insensitiveness to changes in pressure of the fluid supplied to the hollow spring member. Angular motion acceleration is sensed by utilizing a cylindrical inertial mass connected along its longitudinal axis to two torsional spring members rigidly fixed in position at their far ends such that the cylindrical mass is subject to rotation in the presence of an angular motion acceleration.

    Fluidic temperature sensor system
    2.
    发明授权
    Fluidic temperature sensor system 失效
    流体温度传感器系统

    公开(公告)号：US3566689A

    公开(公告)日：1971-03-02

    申请号：US3566689D

    申请日：1968-10-17

    Applicant: GEN ELECTRIC

    Inventor： RINGWALL CARL G ,  KELLEY LONNY R

    IPC: F15C1/00 ,  G01K11/22 ,  G01K1/16 ,  G01K11/24

    CPC classification number: F15C1/005 ,  G01K11/22 ,  Y10T137/2065 ,  Y10T137/2142

    Abstract: A FLUIDIC TEMPERATURE SENSING SYSTEM ADAPTED FOR MEASURING AN AVERAGE TEMPERATRE IN A REATIVELY LARGE REGION UTILIZES THE PHASE SHIFT CHARACTERISTIC OF A LONG FLUID TRANSMISSION LINE. A TEMPERATURE SENSING TUBE AND PREHEATER TUBE ARE ARRANGED IN A REGION WHOSE TEMPERATURE IS TO BE MEASURED AND A VARIABLY PRESSURIED FLUID IS CIRCULATED THROUGH THE SENSOR TUBE. THE FLUID AT THE INPUT END OF THE SENSOR TUBE IS EXCITED BY A CONSTANT FREQUENCY FLUIDIC OSCILLATOR TO PROVIDE THE PRESSURE VARIATION, AND A FLUIDIC PHASE DISCRIMINATOR IS CONNECTED ACROSS THE TUBE FOR DETECTING A PHASE SHIFT OF THE PRESSURE WAVE IN ITS TRANSMISSION THROUGH THE SENSOR TUBE. THE PHASE SHIFT ACROSS THE SENSOR TUBE OF FIXED LENGTH IS PROPORTIONAL TO THE ABSOLUTE TEMPERATURE OF THE FLUID WITHIN THE TUBE, AND IF THE TUBE IS EXPOSED TO VARYING TEMPERATURE THE PHASE SHIFT REPRESENTS AN AVERAGE TEMPERATURE.

    Fluidic axis position sensor for rotating mass
    4.
    发明授权
    Fluidic axis position sensor for rotating mass 失效
    流体轴位置传感器旋转质量

    公开(公告)号：US3672235A

    公开(公告)日：1972-06-27

    申请号：US3672235D

    申请日：1970-02-18

    Applicant: GEN ELECTRIC

    Inventor： RINGWALL CARL G

    IPC: G01C19/28

    CPC classification number: G01C19/28 ,  Y10T74/1268 ,  Y10T74/1282

    Abstract: A fluidic axis position sensor is disclosed wherein the axis of rotation of a rotating mass may be determined by sensing irregularities on the surface of the rotating mass. The surface irregularities induce pressure changes in the ambient fluid which may then be sensed. The specific embodiment disclosed relates to a gyroscopic rotor formed by joining hemispheres of differing diameters. Upon rotation about an axis not having as an equator the discontinuity formed by the joint, the discontinuity induces pressure variations which are sensed by fluidic pickoffs spaced about the rotating mass. The output of each pickoff is a pulse width modulated signal whose duty cycle is used to determine the position of the axis of rotation of the mass.

    Electrofluidic delay line oscillator
    6.
    发明授权
    Electrofluidic delay line oscillator 失效
    电磁延迟线振荡器

    公开(公告)号：US3621453A

    公开(公告)日：1971-11-16

    申请号：US3621453D

    申请日：1969-06-19

    Applicant: GEN ELECTRIC

    Inventor： RINGWALL CARL G ,  BOTTONE SALVATORE JR

    IPC: H03B5/30 ,  H03B5/34

    CPC classification number: H03B5/30 ,  G01K11/26

    Abstract: A closed loop oscillator circuit consists of a tubing of predetermined length, an electrical-to-pneumatic transducer, a pneumatic-to-electrical transducer and an electronic amplifier. The electrical-to-pneumatic transducer converts an electrical frequency signal to a pneumatic frequency signal which generates pressure waves in a gaseous medium within the tubing. The tube length corresponds to one or multiple half-wavelengths of a reference frequency of oscillation. The electronic amplifier provides sufficient gain to maintain self-sustained oscillation in the closed loop circuit. The temperature or gas content (ratio) of the gaseous medium within the tubing can be determined from the actual oscillation frequency in the circuit.

    Fluidic oscillator
    9.
    发明授权
    Fluidic oscillator 失效
    流体振荡器

    公开(公告)号：US3695283A

    公开(公告)日：1972-10-03

    申请号：US3695283D

    申请日：1970-12-02

    Applicant: GEN ELECTRIC

    Inventor： RINGWALL CARL G

    IPC: F15C1/04 ,  F15C3/12

    CPC classification number: F15C1/04 ,  F15C3/12 ,  Y10T137/2153 ,  Y10T137/2202 ,  Y10T137/2322

    Abstract: A fluidic oscillator is disclosed which incorporates a flexurally mounted jet pipe adapted to oscillate and discharge alternately into a pair of receivers. The jet pipe includes a pair of opposed reaction surfaces radially displaced from its rotational axis and aligned with a pair of driving ports. Output from the jet pipe receivers is amplified by a proportional fluid amplifier, and a negative feedback is provided whereby fluid output from the proportional amplifier is directed to the driving ports and issued therefrom as a pulsating jet stream to promote oscillation of the jet pipe. In an alternative embodiment, the proportional fluid amplifier is replaced by a digital fluid amplifier.

    Abstract translation: 公开了一种流体振荡器，其包括弯曲安装的喷射管，其适于将振荡和放电交替地放入一对接收器中。 喷射管包括从其旋转轴线径向偏移并与一对驱动端口对准的一对相对的反作用表面。 来自喷射管接收器的输出由比例流体放大器放大，并且提供负反馈，其中来自比例放大器的流体输出被引导到驱动端口并且作为脉动喷射流从其发出以促进喷射管的振荡。 在替代实施例中，比例流体放大器由数字流体放大器代替。

    Fluidic reset integrator circuit
    10.
    发明授权
    Fluidic reset integrator circuit 失效
    流体复位集成电路

    公开(公告)号：US3592383A

    公开(公告)日：1971-07-13

    申请号：US3592383D

    申请日：1970-04-29

    Applicant: GEN ELECTRIC

    Inventor： RINGWALL CARL G

    IPC: F15C1/14 ,  G06D5/00

    CPC classification number: F15C1/146 ,  Y10T137/2142 ,  Y10T137/2278

    Abstract: The gain of a fluidic proportional integrator circuit is alternately reduced to zero to obtain a fluidic reset integrator having no moving mechanical parts. A rapid reduction to zero gain is achieved by alternately switching the output of a digital fluid amplifier from the power fluid inlet of a proportional fluid amplifier in the integrator circuit in accordance with the pressure magnitude at the output of the integrator circuit.

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