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1. 发明授权

US5175477A Dimmer for fluorescent and incandescent lamps 失效
标题翻译：调光器用于荧光灯和白炽灯
公开(公告)号：US5175477A
公开(公告)日：1992-12-29
申请号：US767869
申请日：1991-09-30
申请人： David Grissom
发明人： David Grissom
IPC分类号： H05B39/04
CPC分类号： H05B39/048 , Y02B20/148 , Y10S315/04
摘要： A universal dimmer which can be used for both fluorescent lamps having a ballast and for incandescent lamps connected to either an alternating or direct current power supply. The dimmer can be installed in place of a standard wall-mounted light switch and connected to the existing wiring. The dimmer circuitry has a fullwave diode rectifier bridge connected in series with the lamp for converting the alternating current power into direct current. A variable current limiting circuit is connected in series with the DC output of the rectifier bridge and is powered by direct current to control the amount of current supplied through the lamp and ballast. The current limiting circuit includes a power transistor which acts as a variable resistor and controls the lamp current and an operational amplifier coupled with a voltage divider network that establishes a selectively variable reference voltage which controls the amount of current through the lamp. The fullwave rectifier bridge supplies a small amount of power to the control circuitry. The current limiting circuit allows continuous dimming control from full light output to zero output of both arc discharge lamps and incandescent lamps by limiting the current through the lamp without significantly reducing the electrical conduction angle of the alternating current power supply below 360 degrees and will also control dimming of systems powered by direct current.
摘要翻译：可用于具有镇流器的荧光灯和连接到交流或直流电源的白炽灯的通用调光器。调光器可以安装在标准的壁挂式灯开关上，并连接到现有的接线。调光器电路具有与灯串联的全波二极管整流桥，用于将交流电转换成直流电。可变电流限制电路与整流桥的直流输出串联连接，并由直流电供电，以控制通过灯和镇流器供电的电流量。限流电路包括用作可变电阻器并控制灯电流的功率晶体管和与分压器网络耦合的运算放大器，其建立了控制通过灯的电流量的选择性可变的参考电压。全波整流桥向控制电路提供少量电源。电流限制电路允许通过限制通过灯的电流而将电弧放电灯和白炽灯的全光输出到零输出的连续调光控制，而不会明显地将交流电源的导电角度降低到360度以下，并且还将控制由直流电源调光的系统变暗。

2. 发明授权

US4515010A Stuck point indicating device with linear sensing means 失效
标题翻译：带有线性检测装置的卡住点指示装置
公开(公告)号：US4515010A
公开(公告)日：1985-05-07
申请号：US478980
申请日：1983-03-25
申请人： Vincent C. Weido , David Grissom
发明人： Vincent C. Weido , David Grissom
IPC分类号： E21B47/09 , G01B7/24 , G01B7/26 , E21B31/00 , E21B47/00
CPC分类号： G01B7/26 , E21B47/09 , G01B7/24
摘要： A device for determining the stuck point of a drill pipe in a borehole consisting of two relatively movable sections, anchoring means for each section, a sensing means for detecting relative movement of the two sections and producing an inductance representative of the movement. The inductance is transformed into a frequency modulated signal which is transmitted to the surface and converted from a non-linear direct current voltage representation of relative movement to a linear direct current voltage.
摘要翻译：一种用于确定由两个相对可动部分组成的钻孔中的钻杆的卡住点的装置，用于每个部分的锚固装置，用于检测两个部分的相对运动并产生代表运动的电感的感测装置。电感被变换为频率调制信号，该信号被传输到表面并从相对运动的非线性直流电压表示转换成线性直流电压。

3. 发明授权

US4688200A Optical system for detecting acoustic wave energy in a fluid medium 失效
标题翻译：用于检测流体介质中的声波能量的光学系统
公开(公告)号：US4688200A
公开(公告)日：1987-08-18
申请号：US777322
申请日：1985-09-18
申请人： Thomas J. Poorman , David Grissom , Edward F. Carome
发明人： Thomas J. Poorman , David Grissom , Edward F. Carome
IPC分类号： G01H9/00 , H04R23/00 , H04R1/02 , G01B9/02
CPC分类号： H04R23/008 , G01H9/004
摘要： An optical sound source signature transducer system for use in marine seismic exploration in which coherent radiation from a laser is coupled to unequal length optical paths exposed to modulation by the acoustic energy wave generated by the sound source. The reflected beams from the paths are crosscoupled to generate interference fringes in two output beams out of phase with each other. The fringes in one output beam are counted in an up/down counter to determine the magnitude of the pressure as a function of time. The direction of the pressure change is determined by examination of the phase relationship between the fringes in the output beams. Peaks and valleys in the pressure are detected as phase reversals between the fringes in the output beams be detecting the beginning and end of a fringe in one beam without detecting the beginning or end of a fringe in the other beam therebetween. The direction of counting of the counter is reversed upon detection of a peak or valley in the modulating pressure to maintain the count as an accurate representation of the magnitude of the pressure.
摘要翻译：一种用于海洋地震勘探的光学声源签名换能器系统，其中来自激光器的相干辐射被耦合到由声源产生的声能波浪暴露于调制的不等长的光路径上。来自路径的反射光束是交叉耦合的，以在彼此不同相的两个输出光束中产生干涉条纹。一个输出光束中的条纹被计数在上/下计数器中，以确定压力的大小作为时间的函数。通过检查输出光束中条纹之间的相位关系来确定压力变化的方向。检测到压力中的峰和谷被检测为输出光束中的条纹之间的相位反转，其检测到一个光束中的边缘的开始和结束，而不检测其间的另一个光束中的边缘的开始或结束。在检测到调制压力中的峰值或谷值时，计数器的计数方向相反，以将计数值保持为压力大小的精确表示。

4. 发明授权

US4726650A Optical accelerometer 失效
标题翻译：光学加速度计
公开(公告)号：US4726650A
公开(公告)日：1988-02-23
申请号：US780884
申请日：1985-09-27
申请人： David Grissom
发明人： David Grissom
IPC分类号： G01P15/093 , G02B6/16
CPC分类号： G01P15/093
摘要： A loop, formed in a single suspended strand of a photo-elastic material, serves as an inertia mass that is rotatable about the axis of the suspended strand. The angular displacement of the loop, due to an accelerating force, is measured as a function of the change in polarization angle of a radiant beam passing through the strand.
摘要翻译：形成在光弹性材料的单个悬挂线中的环用作可围绕悬挂股线的轴线旋转的惯性质量块。作为通过线束的辐射束的偏振角的变化的函数，测量由于加速力引起的环的角位移。

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