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41. 发明授权

US1655276A Electric measuring system 失效
公开(公告)号：US1655276A
公开(公告)日：1928-01-03
申请号：US75896624
申请日：1924-12-30
申请人： GEN ELECTRIC
发明人： GEZA LICHTSCHEINDL
IPC分类号： G01R27/12
CPC分类号： G01R27/12

42. 发明授权

US3909707A Frequency ratio indicating circuit arrangements 失效
标题翻译：频率指示电路布置
公开(公告)号：US3909707A
公开(公告)日：1975-09-30
申请号：US46902074
申请日：1974-05-10
申请人： FERRANTI LTD
发明人： CHADWICK PETER
IPC分类号： G01R23/02 , G01R27/12 , H03K5/26 , G01P3/56 , G01R23/14 , G08B21/00
CPC分类号： H03K5/26 , G01R23/02 , G01R27/12
摘要： A frequency ratio indicating circuit arrangement, operable to indicate within which one of a number of ranges lies the ratio of pulse repetition frequencies of two pulse trains, comprises a series of J-K bistable devices which are primed by individual bistable latches to produce an output indication signal when triggered in accordance with whether the latches are in a SET or RESET state. Each latch is SET by a pulse, passed by a combination of logic gates, from a resettable counter of input pulses of one pulse train, the series of logic gates opening at various stages in the count in accordance with their interconnection pattern with the counter. The SET and RESET inputs of adjacent latches are connected in parallel such that as the count proceeds, each latch is SET in turn with the previously SET latch being RESET. Pulses of the other train are counted and at every tenth pulse cause the J-K bistable devices to be triggered and, subsequently, the counter and latches to be RESET. Whichever J-K device is primed at the time of the trigger pulse provides an indication signal to show in which range of ratios, that is, between which stages of count for which the appropriate latch is SET, the trigger pulse occurs.
摘要翻译：频率比指示电路装置，可操作以指示多个范围中的哪一个位于两个脉冲串的脉冲重复频率的比率中的哪一个包括由单个双稳态锁存器引导以产生输出指示信号的一系列JK双稳态器件根据锁存器是否处于SET或RESET状态触发。每个锁存器由来自一个脉冲串的输入脉冲的可复位计数器的逻辑门组合的脉冲设置，该逻辑门系列根据它们与计数器的互连图案在计数中的各个阶段打开。相邻锁存器的SET和RESET输入并联连接，使得当计数继续时，每个锁存器依次被SET设置锁存器复位。对其他列车的脉冲进行计数，并在每十分之一次的脉冲下使J-K双稳态器件触发，随后计数器和锁存器被复位。在触发脉冲时，无论哪个J-K器件被引脚提供指示信号，以显示哪个比率范围，即适当锁存器被设置在哪个级数之间，触发脉冲发生。

43. 发明授权

US3781698A Voltage ratio discriminator 失效
标题翻译：电压比率分辨率
公开(公告)号：US3781698A
公开(公告)日：1973-12-25
申请号：US3781698D
申请日：1972-05-30
申请人： GEN ELECTRIC
发明人： DAVIS R
IPC分类号： G01R19/10 , F16C17/24 , G01H17/00 , G01M1/22 , G01R27/12 , G08C25/00 , H03D1/20
CPC分类号： G01M1/22 , G01M13/045 , G01R27/12
摘要： A circuit for providing an output which is the ratio of the peak input voltage divided by the average input voltage to the circuit. This circuit includes means to first provide for generating both the peak input and the rectified average or background input which provides an output which serves as a means to control the overall operation of the initial averaging means. There is further provided means to distinguish a peak value from the first mentioned average to provide the output specified.
摘要翻译：用于提供输出的电路，其是峰值输入电压除以平均输入电压与电路的比率。该电路包括首先提供峰值输入和整流平均值或背景输入两者的装置，其提供用作控制初始平均装置的整体操作的手段的输出。还提供了用于区分峰值与前述平均值以提供指定的输出的装置。

44. 发明授权

US3681586A Product/quotient deriving system 失效
标题翻译：产品/数量采购系统
公开(公告)号：US3681586A
公开(公告)日：1972-08-01
申请号：US3681586D
申请日：1970-03-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： KITAURA KOUICHI
IPC分类号： G01R21/133 , G01R27/12 , G06J1/00
CPC分类号： G06J1/00 , G01R21/133 , G01R27/12
摘要： Two electrical quantities are converted to sawtoothed signals having frequencies directly or inversely proportional to their magnitudes respectively. The number of sawtoothed waves occurring in one of the signals during one period of the other signal are counted to provide a product or a quotient of the electrical quantities. Alternatively, the electrical quantities may be converted to pulse trains having repetition rates corresponding to their magnitudes and counted in terms of the number of pulses.

45. 发明授权

US3523237A Device converting electric current ratio into time ratio 失效
标题翻译：设备将电流比转换成时间比率
公开(公告)号：US3523237A
公开(公告)日：1970-08-04
申请号：US3523237D
申请日：1968-09-23
申请人： HONEYWELL INC
发明人： OGAWA SHINICHIRO , MATSUDA TOSHIYUKI
IPC分类号： G01R27/12 , G06G7/161 , H02M7/00 , H02J7/00
CPC分类号： G06G7/161 , G01R27/12

46. 发明授权

US3514700A Voltage ratio computer 失效
标题翻译：电压比计算机
公开(公告)号：US3514700A
公开(公告)日：1970-05-26
申请号：US3514700D
申请日：1967-05-15
申请人： SYBRON CORP
发明人： KALIN WALTER F , MITCHELL RICHARD L
IPC分类号： G01R27/12 , G06G7/163 , G01R7/04 , G06G7/16
CPC分类号： G06G7/163 , G01R27/12

47. 发明授权

US3036969A Oil containing rust inhibiting combination of two ingredients 失效
标题翻译：含有防锈组合的两种成分的油
公开(公告)号：US3036969A
公开(公告)日：1962-05-29
申请号：US69893757
申请日：1957-11-26
申请人： EXXON RESEARCH ENGINEERING CO
发明人： WILSON ERNEST V , ERTELT HENRY R , KEEBER WILLARD H
IPC分类号： C10G71/00 , G01R27/12
CPC分类号： C10M1/08 , C10M2207/282 , C10M2207/34 , C10M2207/40 , C10M2207/404 , C10M2209/112 , C10M2219/044 , C10M2219/085 , C10M2223/04 , C10M2223/042 , C10M2223/045 , C10M2229/02 , C10M2229/041 , C10M2229/05 , C10N2210/02 , C10N2220/02 , C10N2240/14 , G01R27/12

48. 发明授权

US2995707A Frequency detector 失效
标题翻译：频率检测器
公开(公告)号：US2995707A
公开(公告)日：1961-08-08
申请号：US76407358
申请日：1958-09-29
申请人： PHILIPS CORP
发明人： DE JAGER FRANK , GERWEN PETRUS JOSEPHUS VAN
IPC分类号： G01R23/00 , G01R27/12 , G10L25/00
CPC分类号： G01R27/12 , G01R23/00 , G10L25/00
摘要： 844,561. Frequency discriminators. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 10, 1958 [Oct. 14, 1957], No. 32423/58. Class 40(5). [Also in Group XXXVI] In a frequency detector for the detection of the variation of a characteristic speech frequency situated within a speech sub-band, the speech sub-band, which is selected by means of a filter 4, is supplied to two channels 6, 7 connected in parallel, the channel 6 comprising a differentiating network 8 and a rectifier 9 and the second a rectifier 11, the output voltages from the channel being fed to a ratio meter 13 the output voltage of which is the ratio of the amplitudes of the channel output voltages and a measure of the frequency. Low-pass filters 10 and 12 are included in branches 6, 7 respectively, and, if the input voltage of rectifier 11 is a (t) at a certain instant that to rectifier 9 is #a(t), so that the ratio of the output voltages of filters 10 and 12 is proportional to awdt/adt and therefore to the frequency. In the embodiment shown, the output direct voltages of filters 10, 12 are converted into alternating voltages of frequencies fi f 2 , corresponding in amplitude to the direct voltages, by means of amplitude modulators 15, 16, carrier wave oscillators 17, 18 of frequencies f 1 f 2 and output filters 19, 20, the outputs of the oscillators and filters being connected through attenuators 21, 22 to adjust the strength ratio of the carrierwave oscillations. A ratio meter for use in the detector is shown in Fig. 4. The alternating voltage derived from channel 6 of frequency f 1 and amplitude-modulated by the rectified differentiated input signal is applied to the grid of a pentode 25 through a resistor 23, the alternating voltage derived from channel 7 of frequency f 2 and amplitude modulated by the rectified input signal being applied to the grid through a resistor 26. Slope control is provided for the pentode 25 and the amplitude of oscillations at frequency f 2 at the output of pentode 25 is therefore kept constant, so that the slope of the pentode 25 varies inversely as the amplitude of the input voltage at frequency f 2 . The voltage at frequency fi is selected by a filter 30 and rectified, the output at 38, 39 being a direct voltage proportional to the amplitude ratio between the output voltages of channels 6 and 7. In the embodiment of Fig. 5, the ratio is determined by amplitude limitation instead of slope control. An amplitude limiter comprising rectifiers 45, 46 has an output consisting of a voltage of frequency f 2 modulated by the voltage of frequency f 1 the frequency deviation of said f.m. voltage being proportional to f 1 : f 2 , the amplitude of f 1

49. 发明授权

US2970923A Method of preventing marine growth, and antifouling compositions useful for said method 失效
标题翻译：防止海洋生长的方法和用于所述方法的防污组合物
公开(公告)号：US2970923A
公开(公告)日：1961-02-07
申请号：US75083958
申请日：1958-07-24
申请人： SCHERING AG
发明人： WERNER SPARMANN HEINZ
IPC分类号： C09D5/16 , G01R27/12
CPC分类号： C09D5/1631 , G01R27/12 , Y10S428/907

50. 发明授权

US2928150A Temperature control during metal casting 失效
标题翻译：金属铸造期间的温度控制
公开(公告)号：US2928150A
公开(公告)日：1960-03-15
申请号：US64253057
申请日：1957-02-26
申请人： INLAND STEEL CO
发明人： KRAAY LAWRENCE E
IPC分类号： B22D2/00 , B22D11/11 , G01R27/12
CPC分类号： B22D2/006 , B22D11/11 , G01R27/12
摘要： 849,534. Steel manufacture. INLAND STEEL CO. Feb. 5, 1958 [Feb. 26, 1957], No. 3749/58. Class 72 [Also in Group XXII] A method of casting low or medium carbon steel, rimmed, killed, or semi-killed, comprises introducing a controllable amount of oxidizing gas containing at least 80% oxygen into the space above the metal in a tundish so that the metal is maintained at a predetermined pouring temperature. As shown, molten metal is poured from a ladle 14 into a tundish 10 from which it flows into a mould 22. The tundish may be of elongated shape sloping downwardly to a stoppered outlet 16 and may have a cover 11 through which oxygen may be supplied through pipes 32. Additional heat may also be supplied by fuel burners 27, in which case the oxygen may be added as excess oxygen through the burners. It is stated that little change takes place in the analysis of the metal during its passage through the tundish and the temperature is maintained with a drop of not more than 100‹F. (55‹C.).

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