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131.发明授权Enhancing resolution in analog-to-digital conversion by adding statistically controlled noise to the analog input signal 失效通过向模拟输入信号添加统计控制噪声来增强模数转换中的分辨率
公开(公告)号：US3877022A
公开(公告)日：1975-04-08
申请号：US36007173
申请日：1973-05-14
发明人： LEHMAN JOSEPH L , LYNCH FRANK
CPC分类号： H03M1/124
摘要： The resolution of analog-to-digital conversion is enhanced by combining the analog input signal, prior to sampling, with a statistically controlled noise signal. The noise signal has a defined probability density function, and its power density spectrum is outside the spectra of the analog input signal and the sampling signal so that none of the noise energy is in the frequency interval of the data of interest following sampling.
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公开(公告)号：US3828127A
公开(公告)日：1974-08-06
申请号：US35865073
申请日：1973-05-09
发明人： LEHMANN J
CPC分类号： H01J29/34
摘要： A device including a CRT is fitted with a graticule plate which provides grid lines that remain clear and retain proper contrast both when the CRT screen is observed directly through the graticule plate and when the CRT screen is photographed by a conventionally mounted CRT camera. The graticule plate does not need internal illumination, but is mounted outside the front face of the CRT device to admit ambient light through its side walls.
摘要翻译： 包括CRT的装置装配有格栅板，其提供保持清晰并且保持适当对比度的网格线，当CRT屏幕直接通过刻线板观察时，以及当通过常规安装的CRT相机拍摄CRT屏幕时。 格栅板不需要内部照明，而是安装在CRT设备的正面以外，以通过其侧壁来承受环境光。
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公开(公告)号：US3764909A
公开(公告)日：1973-10-09
申请号：US3764909D
申请日：1971-08-20
发明人： PEARSON D
摘要： An electric meter particularly characterized by a small number of moving parts and simplified assembly by virtue of fixed cooperating locating surfaces on the elements and sub-assemblies of the meter. A magnetic circuit including a yoke and magnet are constructed to snap into an insulating base in a predetermined position on the base. A coil assembly initially including integral elements for connection of pivot bearings or taut bands is accurately positioned for rotation on the supporting base by inserting the assembly into the base. Cooperating locating surfaces provide for accurate predetermined positioning of the axis of rotation of the coil relative to the magnetic circuit. Additional features of the meter construction reside in a direct gear drive between a zero adjust element and zero adjust knob mounted in a cover for the meter, a unique base, casing, and cover which snap together, a coil support form of unique construction and which includes motion limiting elements which limit the permissible extent of movement of the coil in the event of shock or impact to positions well within the elastic limit of the supports which mount the coil for rotation, a unique mode of terminating the end connections for the coil without the need for stripping insulation, a unique mounting arrangement for the assembled meter, a unique rear mounting scale plate which provides for easily replacing scale plates to meet the needs of the user of the meter, a meter movement of a single size adapted to be used with casings and scales of various sizes whereby the number of different parts required to form meters of different sizes is maintained at a minimum, a unique insulating material base with flexibility to permit expanding the base during assembly of the meter, and sub-assemblies, components, and elements which can be assembled in only one position and orientation to assure proper assembly of the meter.
摘要翻译： 一种电表，其特征在于具有少量的运动部件，并且通过仪表的元件和子组件上的固定的配合定位表面来简化组装。 包括磁轭和磁体的磁路被构造为在基座上的预定位置卡扣到绝缘基座中。 最初包括用于枢转轴承或拉紧带的连接的整体元件的线圈组件通过将组件插入基座而被精确地定位以便在支撑基座上旋转。 配合定位表面提供线圈相对于磁路的旋转轴线的精确预定义。 仪表结构的附加特征在于零调节元件和零调节旋钮之间的直接齿轮传动，该零调节旋钮安装在用于仪表的盖中，独特的底座，壳体和盖子，其卡合在一起，具有独特结构的线圈支撑形式， 包括运动限制元件，其限制在发生冲击或冲击的情况下线圈的允许运动程度，该位置恰好在安装线圈以旋转的支撑件的弹性极限内的位置，一种终止线圈的端部连接的独特模式， 需要剥离绝缘，为组装的仪表提供独特的安装布置，独特的后安装秤，可轻松替换刻度板，以满足仪表用户的需求，适合使用的单一尺寸的仪表移动 具有各种尺寸的外壳和秤，由此将形成不同尺寸的米所需的不同部件的数量保持在最小，独特的绝缘马 能够灵活地允许在组装仪表期间扩展基座，以及可以仅在一个位置和方向组装的子组件，部件和元件，以确保仪表的正确组装。
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公开(公告)号：US3742772A
公开(公告)日：1973-07-03
申请号：US3742772D
申请日：1971-08-12
发明人： MAKOVEC A
摘要： A zero adjust mechanism includes a shaft member arranged for axial movement within a tubular housing, with one end of said shaft extending out from one end of the housing and being adapted to be coupled to a meter movement. A bellows surrounds the portion of the shaft within the housing and a drive means is coupled to the other end of the shaft for imparting axial movement thereto in response to rotative movement of the drive means.
摘要翻译： 零调节机构包括轴构件，其被布置成在管状壳体内轴向移动，所述轴的一端从壳体的一端延伸出并且适于联接到仪表运动。 波纹管围绕壳体内的轴的部分，并且驱动装置联接到轴的另一端以响应于驱动装置的旋转运动而向其轴向运动。
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公开(公告)号：US3715592A
公开(公告)日：1973-02-06
申请号：US3715592D
申请日：1971-01-12
CPC分类号： G01N23/16
摘要： An illustrative embodiment of the invention shows a technique for accurately observing relative changes in strip thickness during sheet metal rolling operations. This is accomplished by measuring the apparent attenuations of two collimated beams of radiation. The prime radiation beam and the scanning beam, for instance, are tilted in opposite directions relative to the plane of the longitudinally moving metal strip in order to provide clearance for the radiation sources and associated detectors during traverse across the strip width. These tilted beams enable the relative change in strip thickness to be measured at essentially the same longitudinal position.
摘要翻译： 本发明的说明性实施例示出了在钣金轧制操作期间准确地观察带材厚度的相对变化的技术。 这是通过测量两个准直的辐射束的表观衰减来实现的。 例如，主辐射束和扫描光束相对于纵向移动的金属条的平面以相反的方向倾斜，以便在穿过条带宽度的过程中为辐射源和相关联的检测器提供间隙。 这些倾斜的梁使得能够在基本上相同的纵向位置处测量条带厚度的相对变化。
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公开(公告)号：US3711850A
公开(公告)日：1973-01-16
申请号：US3711850D
申请日：1970-12-03
发明人： KELLY A
摘要： A digital ohmmeter includes a current source having very high effective internal resistance to develop an analog signal across an unknown resistor and an analog-to-digital converter connected to the unknown resistor. The current source includes a differential operational amplifier with a conventional source of current connected to its integrating amplifier and to the inverting input and negative feedback from the output to the noninverting input. The output current is connected through a known resistance to the unknown resistor and to the non-inverting input of a second differential amplifier having capacitive feedback to its inverting output, forming an integrator. The integrator produces a dual-slope output under the control of a timer and level detector which also gates clock pulses to a counter to produce a count proportional to the resistance of the unknown. A reference current source is switched to the inverting input of the non-inverting input of the source amplifier.
摘要翻译： 数字欧姆表包括具有非常高的有效内部电阻的电流源，以在未知电阻器和连接到未知电阻器的模数转换器之间开发模拟信号。 电流源包括具有常规电流源的差分运算放大器，其连接到其积分放大器以及反相输入以及从输出到非反相输入的负反馈。 输出电流通过对未知电阻器的已知电阻和具有到其反相输出的电容反馈的第二差分放大器的非反相输入连接，形成积分器。 积分器在定时器和电平检测器的控制下产生双斜率输出，该定时器和电平检测器也将时钟脉冲输入计数器，以产生与未知电阻成比例的计数。 参考电流源切换到源极放大器的同相输入的反相输入端。
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公开(公告)号：US3678383A
公开(公告)日：1972-07-18
申请号：US3678383D
申请日：1971-05-03
发明人： BOREAS WILLEM J L
摘要： In a taut band suspension instrument in which each taut band extends between two convex support surfaces and the end portions of the taut band are secured to the respective supports by fused metal connections at points spaced radially from the axis defined by the band, the support surface at the end of the band farther from the rotor is provided with a shallow groove, the bottom of the groove being continuous and uninterrupted and having a width at least twice the width of the taut band, the support surface at the other end of the band being smooth and unbroken for the full width thereof. The combination of the two support surfaces allows the taut band to shift laterally when the instrument is under shock, yet assures that the outer end of the taut band will be properly oriented when installed and thereafter.
摘要翻译： 在其中每个拉紧带在两个凸形支撑表面之间延伸并且拉紧带的端部通过在与由带限定的轴线径向间隔开的点处的熔融金属连接固定到相应支撑件的拉紧带悬挂仪器中，支撑表面 在距离转子更远的带的端部设置有浅槽，槽的底部是连续且不间断的，并且具有至少两倍于拉紧带的宽度的宽度，带的另一端的支撑表面 在其整个宽度上光滑且不间断。 当仪器受到冲击时，两个支撑表面的组合允许拉紧带横向移动，但是确保拉紧带的外端在安装时以及之后将被正确定向。
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138.发明授权Cathode ray tube having inert barrier between silver chloride seal and photo cathode 失效阴极射线管有银色密封和照片阴极之间的阴极射线管
公开(公告)号：US3662206A
公开(公告)日：1972-05-09
申请号：US3662206D
申请日：1970-02-24
发明人： FLECK HORST G
CPC分类号： H01J43/28 , C04B37/023 , C04B2237/10 , C04B2237/125 , C04B2237/708 , C04B2237/72 , C04B2237/74 , C04B2237/765 , C04B2237/88 , H01J5/20 , H01J29/38 , H01J2893/0037
摘要： An illustrative embodiment of the invention shown a method and apparatus for joining a crystalline magnesium fluoride faceplate to the envelope of a photomultiplier tube. The bialkali photocathode deposited on the faceplate is protected from the chemically incompatible silver chloride sealing compound by a preglazed glass frit that acts as a barrier between the photocathode and the seal.
摘要翻译： 本发明的说明性实施例示出了将结晶氟化镁面板连接到光电倍增管的外壳的方法和装置。 通过用作光电阴极和密封件之间的屏障的预釉玻璃料，保护沉积在面板上的双电池光电阴极被化学不相容的氯化银密封化合物保护。
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公开(公告)号：US3622292A
公开(公告)日：1971-11-23
申请号：US3622292D
申请日：1969-06-03
发明人： FLECK HORST G
IPC分类号： C03B23/207 , C03B37/028 , C03B37/15 , H01J9/12 , C03B39/00
CPC分类号： C03B23/207 , C03B37/028 , C03B37/15 , H01J9/125 , H01J2201/32
摘要： The invention herein described was made in the course of or under a contract or subcontract thereunder with the Department of the Army. An illustrative embodiment of the invention is directed to method and apparatus for manufacturing microchannel devices. Typically, individual glass tubes are suspended vertically in a furnace. A vacuum is drawn within the furnace so that the inner surfaces of the tubes, exposed to atmospheric pressure, will not collapse during heating and drawing. At temperature, the bundle is drawn in order to elongate and reduce the bundle cross section by a ratio of about 50 to 1. The elongated bundle is cut into lengths that are stacked together within a tube of glass that has a higher melting point than the glass in the drawn lengths. The channels are once more sealed and the adjacent hexagonal lengths are subjected to a secondary fusion process prior to slicing into thin discs. To prevent the inner lengths from cracking during cooling, the inner surface of the tube is treated with a fusion inhibiting compound (e.g., boron nitride).
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公开(公告)号：US3587092A
公开(公告)日：1971-06-22
申请号：US3587092D
申请日：1969-04-04
发明人： KELLY AUSTIN T , NAGY JOHN JR
CPC分类号： H03M1/50
摘要： Apparatus is disclosed for converting a relatively slow timevarying or analog input signal into a time interval, pulse width and/or a digitally displayed form which respectively represent the magnitude of the input signal. The apparatus is designed to perform the conversion function with a minimum number of circuit components and finds special application in small-sized, low-cost digital voltmeters.
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