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公开(公告)号：US4093771A
公开(公告)日：1978-06-06
申请号：US736910
申请日：1976-10-29
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Howard E. Goldstein , Daniel B. Leiser , Victor W. Katvala
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Howard E. Goldstein , Daniel B. Leiser , Victor W. Katvala
CPC分类号： C04B41/009 , C03C1/00 , C03C14/004 , C03C3/089 , C03C8/14 , C04B41/5022 , C03C2205/00 , C03C2214/04 , Y10S428/92 , Y10T428/249962 , Y10T428/249969 , Y10T428/252 , Y10T428/259 , Y10T428/273 , Y10T428/2996
摘要： The present invention relates to reaction cured glass and glass coatings prepared by reacting a compound selected from the group of substances consisting of silicon tetraboride, silicon hexaboride, other boron silicides, boron and mixtures thereof with a reactive glass frit composed of a porous high silica borosilicate glass and boron oxide. The glassy composites of the present invention are useful as coatings on low density fibrous porous silica insulations used as heat shields and for articles such as reaction vessels that are subjected to high temperatures with rapid heating and cooling and that require resistance to temperature and repeated thermal shock at temperatures up to about 1482.degree. C (2700PF).
摘要翻译： 本发明涉及通过使选自四硼化硅，六硼化硅，其它硼化硅，硼及其混合物的物质组合的化合物与由多孔高二氧化硅硼硅酸盐组成的反应性玻璃料反应制备的反应固化玻璃和玻璃涂层 玻璃和氧化硼。 本发明的玻璃状复合材料可用作低密度纤维多孔二氧化硅绝缘体上的涂层，用作隔热层和用于经受高温快速加热和冷却并且需要耐温度和反复热冲击的反应容器的制品 温度高达约1482℃（2700PF）。
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公开(公告)号：US4092633A
公开(公告)日：1978-05-30
申请号：US688856
申请日：1976-05-21
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , John T. Polhemus , Joseph E. Morgan , Arthur Mandell
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , John T. Polhemus , Joseph E. Morgan , Arthur Mandell
CPC分类号： A61B5/1126 , G08B21/182 , G09B21/006
摘要： The condition sensor system comprises a condition detector which produces a pulse when a parameter of the monitored condition exceeds a desired threshold. A resettable condition counter counts each pulse. A resettable timer is preset to produce a particular time frame. The counter produces a condition signal when the accumulated number of pulses within the time frame is equal to or greater than a preset count. Control means responsive to the incoming pulses and to the condition signal produce control signals that control utilization devices. After a suitable delay, the last detected pulse simultaneously resets the pulse counter and the timer, and prepares them for sensing another condition occurrence within the time frame.The invention has particular utility in the process of detecting rocking motions of blind people. A controlled, audible, bio-feedback signal is provided which constitutes a warning to the blind person that he is rocking. In addition, suitable tone signals can be recorded on a small recorder carried by the blind person. The tone signals are used for behavior analysis.
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公开(公告)号：US4088951A
公开(公告)日：1978-05-09
申请号：US780874
申请日：1977-03-24
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Larry D. Holley , Jerry W. Mason
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Larry D. Holley , Jerry W. Mason
IPC分类号： G01R35/02
CPC分类号： G01R35/02
摘要： A computerized field meter calibration system which includes an apparatus for testing the calibration of field meters normally utilized for measuring electromagnetic field potential. A reference voltage is applied to the field meter for causing signals to be produced on the output terminals thereof. A bank of relays is provided for selectively connecting output terminals of the field meter to a multiplexer by means of a digital voltmeter and an oscilloscope. A frequency-shift-keyed receiver is also connected to one of the terminals of the field meter for transmitting and converting a frequency shift keyed signal to a digital signal which is, subsequently, applied to the multiplexer. A microprocessor is used for generating coded command signals to the bank of relays and also to the multiplexer for controlling the comparison of the output signals with information stored within the microprocessor to determine if the field meter is properly calibrated.
摘要翻译： 一种计算机化现场仪表校准系统，其包括用于测试通常用于测量电磁场电位的现场仪表的校准的装置。 参考电压被施加到现场仪表，用于在其输出端产生信号。 提供一组继电器，用于通过数字电压表和示波器选择性地将现场仪表的输出端子连接到多路复用器。 频移键控接收机还连接到现场仪表的一个终端，用于将频移键控信号发送和转换为随后应用于多路复用器的数字信号。 微处理器用于向继电器组产生编码命令信号，并且还用于多路复用器，用于控制输出信号与存储在微处理器内的信息的比较，以确定现场仪表是否被正确校准。
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公开(公告)号：US4079268A
公开(公告)日：1978-03-14
申请号：US730045
申请日：1976-10-06
申请人： James C. Administrator of the National Aeronautics and Space Administration with respect to an invention of Fletcher , Richard M. Dickinson
发明人： James C. Administrator of the National Aeronautics and Space Administration with respect to an invention of Fletcher , Richard M. Dickinson
CPC分类号： H02M11/00 , H01Q1/248 , H01Q21/065 , H01Q23/00 , H01Q9/0428
摘要： A structure of a circularly polarized, thin conformal, antenna array which may be mounted integrally with the skin of an aircraft employs microstrip elliptical elements and interconnecting feed lines spaced from a circuit ground plane by a thin dielectric layer. The feed lines are impedance matched to the elliptical antenna elements by selecting a proper feedpoint inside the periphery of the elliptical antenna elements. Diodes connected between the feed lines and the ground plane rectify the microwave power, and microstrip filters (low pass) connected in series with the feed lines provide DC current to a microstrip bus. Low impedance matching strips are included between the elliptical elements and the rectifying and filtering elements.
摘要翻译： 圆形极化，薄的共形天线阵列的结构可以与飞机的皮肤一体地安装，采用微带椭圆形元件，并且通过薄的电介质层与电路接地层间隔开馈电线。 通过在椭圆形天线元件的周边内选择适当的馈电点，馈线与椭圆形天线元件阻抗匹配。 连接在馈电线和接地面之间的二极管整流微波功率，与馈电线串联连接的微带滤波器（低通）为微带线总线提供直流电流。 椭圆形元件与整流滤波元件之间包含低阻抗匹配条。
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公开(公告)号：US4067742A
公开(公告)日：1978-01-10
申请号：US672695
申请日：1976-04-01
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Leroy Honeycutt, III , Charles R. Manning, Jr.
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Leroy Honeycutt, III , Charles R. Manning, Jr.
CPC分类号： C04B35/645 , C04B35/5607 , C04B35/76 , Y10S60/909
摘要： Ceramic tantalum carbide artifacts having high thermal shock and mechanical erosion resistance are provided by incorporating tungsten-rhenium and carbon particles in a tantalum carbide matrix. The mix is sintered by hot pressing to form the ceramic article which has a high fracture strength relative to its elastic modulus and thus has an improved thermal shock and mechanical erosion resistance. The tantalum carbide is preferable less than minus 100 mesh, the carbon particles are preferable less than minus 100 mesh, and the tungsten-rhenium particles are preferable elongate, having a length to thickness ratio of at least 2/1. Tungsten-rhenium wire pieces are suitable as well as graphite particles.
摘要翻译： 通过在碳化钽基体中掺入钨 - 铼和碳颗粒来提供具有高热冲击和耐机械腐蚀性的陶瓷碳化钽伪影。 通过热压烧结混合物以形成相对于其弹性模量具有高断裂强度的陶瓷制品，因此具有改善的热冲击和机械耐冲蚀性。 碳化钽优选小于负100目，碳颗粒优选小于负100目，钨 - 铼颗粒优选细长，长至厚度比至少为2/1。 钨 - 铼线片也适用于石墨颗粒。
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公开(公告)号：US4062245A
公开(公告)日：1977-12-13
申请号：US572990
申请日：1975-04-30
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Allen G. Ford
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Allen G. Ford
CPC分类号： B64G1/22 , Y10T74/18504 , Y10T74/1852
摘要： A motion-restraining device for dissipating at a controlled rate the force of a moving body. The device is characterized by a drive shaft adapted to be driven in rotation by a moving body connected thereto through a tape wound about a reel mounted on the drive shaft, oscillatable mass, a crankshaft connected with the drive shaft, and an elongated pitman link having one end pivotally connected to the crankshaft and the opposite end thereof connected with the mass through an energy dissipating linkage including a shuttle disposed within a slot and guided thereby for rectilinear motion between a pair of spaced impact surfaces so configured that reaction forces applied at impact of the shuttle with the impact surfaces include oppositely projected force components angularly related to the direction of the applied impact forces, whereby a cancellation of components of reaction forces is achieved.
摘要翻译： 一种运动限制装置，以受控的速度散发移动体的力。 该装置的特征在于，驱动轴适于通过连接在其上的移动体旋转驱动，驱动轴缠绕在安装在驱动轴上的卷轴上，可振动质量块，与驱动轴连接的曲轴和具有与驱动轴连接的细长凹槽连杆， 一端枢转地连接到曲轴，并且其相对端通过包括设置在槽内的梭子的能量消散连接件连接到该质量块，并由此引导，以便在一对隔开的冲击表面之间进行直线运动，这样构造成使得在撞击时施加的反作用力 具有冲击表面的梭子包括与所施加的冲击力的方向成角度地相关的相反的突出的力分量，从而实现反作用力分量的消除。
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公开(公告)号：US4061561A
公开(公告)日：1977-12-06
申请号：US744574
申请日：1976-11-24
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Benjamin W. Grunbaum
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Benjamin W. Grunbaum
IPC分类号： G01N27/26 , G01N1/10 , G01N27/447
CPC分类号： G01N27/44773 , G01N27/44743 , G01N27/44782
摘要： An apparatus for performing electrophoresis and a multiple-sample applicator for use therewith. Electrophoresis is a physical process in which electrically charged molecules and colloidal particles, upon the application of a DC current, migrate along a gel or a membrane that is wetted with an electrolyte. If a membrane is used, its middle section is kept in tension horizontally above an electrolyte tank, while the ends of the membrane hang down into the electrolyte. If a gel is used, it is held in a tray which is placed on a cooling plate, and wicks make contact with the electrolyte. The tank has unique protected electrodes for conducting the DC current.A multiple-sample applicator is provided which coacts with a novel tank cover to permit an operator either to depress a single button, thus causing multiple samples to be deposited on the gel or on the membrane simultaneously, or to depress one or more sample applicators separately by means of a separate button for each applicator.Greater resolution is achieved by performing two dimensional migrations in a square gel tray. First, the sample is pulled apart in a linear path by the electric current, and then the square gel tray is lifted and turned 90.degree. so that the first migration is pulled apart from an orthogonal direction. The square gel tray is held in place at two opposite corners by retainers on the temperature-controlled plate. These retainers insure an exact 90.degree. change when the tray is repositioned.
摘要翻译： 用于进行电泳的装置和与其一起使用的多样品涂布器。 电泳是一种物理过程，其中带电分子和胶体颗粒在施加直流电流时沿着凝胶或被电解质润湿的膜迁移。 如果使用膜，其中间部分水平地保持在电解液罐上方，同时膜的端部悬挂在电解液中。 如果使用凝胶，则将其保持在放置在冷却板上的托盘中，并且芯与电解质接触。 该罐具有独特的保护电极用于传导直流电流。
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公开(公告)号：US4061427A
公开(公告)日：1977-12-06
申请号：US732630
申请日：1976-10-15
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Phillip J. Stocker , Harris L. Marcus
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Phillip J. Stocker , Harris L. Marcus
摘要： A drift compensated and intensity averaged extensometer for measuring the diameter or other properties of a substantially cylindrical sample based upon the shadow of the sample. A beam of laser light is shaped to provide a beam with a uniform intensity along an axis normal to the sample. After passing the sample, the portion of the beam not striking said sample is divided by a beam splitter into a reference signal and a measurement signal. Both of these beams are then chopped by a light chopper to fall upon two photodiode detectors. The resulting AC currents are rectified and then divided into one another, with the final output being proportional to the size of the sample shadow.
摘要翻译： 漂移补偿和强度平均引伸计，用于基于样品的阴影测量基本圆柱形样品的直径或其他性质。 激光束被成形为沿着垂直于样品的轴提供具有均匀强度的光束。 在通过样本之后，未撞击所述样本的光束的部分被分束器分成参考信号和测量信号。 然后这两个光束都被一个光斩波器切碎，落在两个光电二极管检测器上。 所得到的AC电流被整流，然后被分成彼此，最终的输出与样品阴影的大小成比例。
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公开(公告)号：US4052302A
公开(公告)日：1977-10-04
申请号：US685027
申请日：1976-05-10
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Robert B. Jagow
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Robert B. Jagow
CPC分类号： B01J23/462 , C02F1/725 , C02F11/08
摘要： A wet oxidation process for oxidizing waste materials comprising dissolving a ruthenium salt in a reactant feed stream containing the waste materials, introducing the feed stream into a reactor, heating the reactor contents to an elevated temperature to effect deposition of a catalytic surface of ruthenium black on the interior walls of the reactor and maintaining the feed stream in the reactor for a period of time sufficient to effect at least partial oxidation of the waste materials.
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公开(公告)号：US4045315A
公开(公告)日：1977-08-30
申请号：US658132
申请日：1976-02-13
申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Porter R. Ryason
发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher , Porter R. Ryason
CPC分类号： C01B3/061 , B01J19/127 , C01B3/042 , C01B3/10 , Y02E60/364 , Y02P20/134 , Y10S204/905
摘要： Hydrogen is produced by the solar photolysis of water in a first photo-oxidation vessel with a transparent wall in the presence of a water soluble photo-oxidizable reagent and an insoluble hydrogen recombination catalyst. Simultaneously oxygen is produced in a second photo-reduction reactor with a transparent wall in the presence of an insoluble photo-reduction reagent catalyst. When spent, the solution from the first reactor is fed into the second reactor. A reaction occurs in the dark in which the redox reagents are regenerated, and the regenerated photo-oxidation reagent solution is recycled to the first reactor. The photo-oxidation reagent is preferably a europium salt, and the first reactor also contains a hydrogen recombination catalyst such as platinum supported on glass beads. The photo-reduction catalyst is a bifunctional reagent catalyst including a transition metal salt such as a manganese oxychloride salt covalently bonded to the surface of a high area support such as glass fibers, together with a hydroxyl or chlorohydroxyl decomposition catalyst of high area.
摘要翻译： 在水溶性光可氧化试剂和不溶性氢复合催化剂存在下，在具有透明壁的第一光氧化容器中通过太阳光解水而产生氢。 同时，在存在不溶性光还原剂催化剂的情况下，在具有透明壁的第二光还原反应器中产生氧。 当用完时，将来自第一反应器的溶液送入第二反应器。 在黑色中发生反应，其中氧化还原试剂被再生，再生的光氧化试剂溶液被再循环到第一反应器。 光氧化试剂优选为铕盐，第一反应器还含有负载在玻璃珠上的氢复合催化剂如铂。 光还原催化剂是双官能试剂催化剂，其包括过渡金属盐，如与玻璃纤维等高面积载体的表面共价结合的氯化锰盐，以及高面积的羟基或氯羟基分解催化剂。
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