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1. 发明授权

US4868494A Methods and apparatus for frequency response analysis 失效
标题翻译：频率响应分析方法与装置
公开(公告)号：US4868494A
公开(公告)日：1989-09-19
申请号：US153404
申请日：1988-02-08
申请人： Alan Ryder , Brian Sayers
发明人： Alan Ryder , Brian Sayers
IPC分类号： G01R27/28 , G01R23/16
CPC分类号： G01R23/16
摘要： In a frequency response analyser for operation at high frequencies a signal of frequency F for application to a system under test (15) is generated from a frequency synthesizer (11) capable of operation only at a relatively lower frequency F/K by generating a first signal (19) of frequency at the relatively lower frequency F/K by generating a second signal 104 at the relatively higher frequency (f+F) and generating a third signal (at 114) or F(1--1/K). The second signal is applied to the system under test and an output signal (at 16) derived therefrom. The output is multiplied by the third signal to provide a product signal, and the product signal is analyzed with respect to first signal by means of a correlator 14. The present invention overcomes the limitation in maximum testing frequency imposed by the frequency synthesizers of prior art frequency response analyzers.

2. 发明授权

US4865462A Thermocouples 失效
标题翻译：热电偶
公开(公告)号：US4865462A
公开(公告)日：1989-09-12
申请号：US165256
申请日：1988-03-07
申请人： Geoffrey H. Broomfield
发明人： Geoffrey H. Broomfield
IPC分类号： G01K7/04
CPC分类号： G01K7/04
摘要： A thermocouple, particularly for use in a gas turbine engine, comprises a mineral-insulated thermocouple element having its sensing end reduced in diameter by swaging, to increase sensitivity and reduce response time. Instead of swaging the whole sensing end to the reduced diameter, with a relatively large taper angle, typically about 14.degree., between the swaged and unswaged portions, the end is provided with a more gradual taper extending over substantially its whole length and having an inclusive taper angle of not more than 5.degree., and preferably about 21/2.degree..

3. 发明授权

US4669030A Enclosure for electrical circuitry having a housing with a reversible backplate 失效
标题翻译：具有外壳和带有可逆背板的电路的外壳
公开(公告)号：US4669030A
公开(公告)日：1987-05-26
申请号：US676956
申请日：1984-11-30
申请人： Roger Bannister
发明人： Roger Bannister
IPC分类号： H05K7/14 , H05K1/14
CPC分类号： H05K7/1469 , H05K7/1464
摘要： An electrical time-switch has two relays on a circuit board with electrical connector blades extending from it. A backplate carrying cable connectors is provided with slots such that it can be fitted over the blades, making electrical connection between the cable connectors and the circuit board, with either face exposed. Thus the same backplate can be used for both wall-mounting and panel-mounting, while maintaining ease of access to the cable connectors for cable attachment. An optional unit with a second pair of relays can be fitted on the circuit board and has additional blades for connection to the extra relays.
摘要翻译：电气时间开关在电路板上具有两个继电器，电连接器叶片从其延伸。背板承载电缆连接器设置有槽，使得其可以安装在叶片上方，使得电缆连接器和电路板之间的电连接（两个面都暴露）。因此，相同的背板可以用于墙壁安装和面板安装，同时保持对电缆连接器的电缆连接器的容易的访问。具有第二对继电器的可选单元可以安装在电路板上，并具有用于连接到额外继电器的附加刀片。

4. 发明授权

US4502793A Apparatus and method for measuring temperature profile 失效
标题翻译：用于测量温度曲线的装置和方法
公开(公告)号：US4502793A
公开(公告)日：1985-03-05
申请号：US443989
申请日：1982-11-23
申请人： Kenneth B. Smith , Derek W. Adams
发明人： Kenneth B. Smith , Derek W. Adams
IPC分类号： G01J5/10 , G01J5/00 , G01J5/08
CPC分类号： G01J5/0022 , G01B15/02 , G01B21/045 , G01J5/08 , G01J5/0846 , G01J2005/0048 , G01J2005/0081
摘要： A camera contains a row of diodes sensitive to infrared radiation and mounted on a turntable for rotation about the optical axis of the camera. The signals from the diodes provide a temperature profile of a band across the width of a strip of hot rolled steel moving in a direction orthogonal to the optical axis and to the length of the row of diodes. Since the diodes are low accuracy devices, their measurements are compensated by normalizing co-efficients derived by comparison with the signal provided by an optical pyrometer viewing the central part of the steel strip in the region of the optical axis. To enable all diodes to be calibrated, calibration is effected with the turntable rotated 90.degree. to align all the diodes with the central part of the strip as viewed by the pyrometer. The camera may be mounted on one arm of a C-frame having X-ray tubes in an arm and X-ray detectors in the other arm for the purpose of measuring the thickness profile of the strip in known way. The compensated temperature measurements can then be used to correct the corresponding thickness measurements to take account of the variation in apparent thickness with density, and hence temperature.
摘要翻译：相机包含一排对红外线辐射敏感的二极管，并安装在转盘上，以绕相机的光轴旋转。来自二极管的信号提供了在与光轴正交的方向上移动的热轧钢带的宽度和带状二极管的长度之间的带的温度分布。由于二极管是低精度器件，所以它们的测量通过与通过在光轴的区域中观察钢带的中心部分的光学高温计提供的信号相比较而导出的系数归一化来补偿它们的测量。为了使所有的二极管都能被校准，校准是通过转盘旋转90°来实现的，以使所有的二极管与高温计所看到的带的中心部分对齐。相机可以安装在具有臂中的X射线管和另一臂中的X射线检测器的C形框架的一个臂上，目的是以已知方式测量条的厚度分布。然后可以使用补偿的温度测量来校正相应的厚度测量值，以考虑到密度随温度变化的表观厚度。

5. 发明授权

US4908769A Commodity metering systems 失效
标题翻译：商品计量系统
公开(公告)号：US4908769A
公开(公告)日：1990-03-13
申请号：US61373
申请日：1987-06-15
申请人： John E. Vaughan , Bernard Patry
发明人： John E. Vaughan , Bernard Patry
IPC分类号： G01R22/00 , G07F7/00 , G07F7/08 , G07F15/08
CPC分类号： G07F7/0866 , G01R22/00 , G06Q50/06 , G07F15/08 , G07F17/0014 , G07F7/0873
摘要： A multi-rate commodity metering system comprises an electronic key containing an EEPROM, and a meter for metering the commodity and having a receptacle for receiving the key. The meter also contains a real-time clock. The key can operate as a prepayment device, a programming device and a meter-reading device. Thus the key is taken to the commodity suppliers premises, where, in return for a payment, a credit signal representative of the payment is stored in the key. At the same time, a new program for the meter, i.e. new times for switching between rates and new prices per unit of commodity for each rate, together with the date and time at which the new program is to come into operation, can also be stored in the key. Then, when the key is inserted in the receptacle in the meter, the payment signal and the new program are entered into the meter. Additionally, the current set of meter readings (i.e., the respective readings for each rate) are read into the key, along with the date and time. The next time the key is presented at the supplier's premises for the entry of a new credit signal, the meter readings, and the date and time they were entered in the key, are read from the key.

6. 发明授权

US4868487A Frequency response analyser with multiplying digital to analogue converter 失效
标题翻译：具有倍增数模转换器的频率响应分析仪
公开(公告)号：US4868487A
公开(公告)日：1989-09-19
申请号：US121356
申请日：1987-11-16
申请人： Alan Ryder
发明人： Alan Ryder
IPC分类号： G01R23/16 , G01R27/28
CPC分类号： G01R27/28 , G01R23/16
摘要： In apparatus for performing frequency response analysis of a system under test to establish response coefficients at various frequencies, a look up Read Only Memory is sequentially addressed to give a driving signal. The signal received from a system under test is fed to the analogue input of a multiplying digital to analogue converter, the digital input being fed from a Read Only Memory, storing values of a reference waveform (e.g., sin wt), by which the received signal is multiplied. The integration period of the multiplying digital to analogue converter is selected such that unwanted multiplication products integrate out, leaving the response coefficient at the reference frequency. For speed, a second channel may be used to establish the orthogonal coefficient. Methods are proposed so that the arrangement operates with single or two quadrant multiplying digital to analogue converters and to select harmonic coefficients.
摘要翻译：在用于对被测系统进行频率响应分析以建立各种频率的响应系数的装置中，依次寻址查找只读存储器以给出驱动信号。从被测系统接收到的信号被馈送到乘法数模转换器的模拟输入端，该数字输入从只读存储器馈送，存储参考波形（例如，sin wt）的值，由此接收信号相乘。选择乘法数模转换器的积分周期，使不想要的乘法积分输出，使响应系数处于参考频率。为了速度，可以使用第二通道来建立正交系数。提出了一种方法，使得该装置以单或双象限乘法数模转换器运行并选择谐波系数。

7. 发明授权

US4519251A Roller-type ultrasonic inspection device with acoustical isolation 失效
标题翻译：具有隔音功能的滚筒式超声波检测装置
公开(公告)号：US4519251A
公开(公告)日：1985-05-28
申请号：US529812
申请日：1983-09-06
申请人： John K. Dickson
发明人： John K. Dickson
IPC分类号： G01N29/24 , G01N29/00
CPC分类号： G01N29/2493
摘要： A roller-type ultrasonic probe comprises a support having two parallel limbs, and two coaxially aligned hubs each extending from a respective limb towards the other. An ultrasonic transmitter is mounted in one hub, a receiver is mounted in the other, and an acoustic screen is disposed between the adjacent ends of the hubs. Respective glycerine-filled rollers are mounted on each hub, and a common (or split) tire fits over both rollers. The respective axes of the transmitter and the receiver are preferably inclined at about 5.degree. and 7.degree. respectively towards the radially extending plane between the transmitter and receiver. The arrangement is particularly compact, and facilitates high-resolution ultrasonic investigation of bond quality in glass or carbon-fibre reinforced plastic sheets and other laminates.
摘要翻译：辊式超声波探头包括具有两个平行的四肢的支撑件和两个同轴对准的毂，每个毂从相应的肢体朝向另一个延伸。超声波发射器安装在一个集线器中，一个接收器安装在一个集线器中，一个声屏幕设置在轮毂的相邻端之间。相应的甘油填充辊安装在每个轮毂上，一个共同的（或分开的）轮胎装配在两个辊子上。发射器和接收器的各个轴线优选分别朝向发射器和接收器之间的径向延伸平面倾斜约5°和7°。该装置特别紧凑，便于对玻璃或碳纤维增强塑料片和其他层压板中的粘合质量的高分辨率超声波研究。

8. 发明授权

US4833405A Shaft failure monitoring system using angled rotating teeth and phase detection 失效
标题翻译：轴故障监控系统采用角度旋转齿和相位检测
公开(公告)号：US4833405A
公开(公告)日：1989-05-23
申请号：US172015
申请日：1988-03-23
申请人： Paul N. Richards , Michael C. Douglas , David C. Snowden , Kenneth W. Proctor , Malcolm P. Perks
发明人： Paul N. Richards , Michael C. Douglas , David C. Snowden , Kenneth W. Proctor , Malcolm P. Perks
IPC分类号： G01B7/02 , G01D5/243
CPC分类号： G01D5/243 , G01B7/02
摘要： A shaft monitoring system for sensing axial movement of a shaft, especially in a gas turbine engine, comprises a toothed wheel attached to and rotatable with the shaft, and a pair of inductive sensors disposed radially of the toothed wheel for sensing the passage of the teeth as the shaft rotates. In one embodiment, the toothed wheel has two axially-spaced sets of teeth, one set straight cut and the other set diagonal cut, so that the phase difference between the respective outputs of the sensors varies with axial movement of the shaft. In another embodiment, the sensors are positioned at opposite axial ends of the toothed wheel, so that axial movement of the shaft causes one sensor output to increase in amplitude while the other decreases.

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