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1. 发明授权

US4806914A Detection by automatic gain control features of gradual cutting tool breakage 失效
标题翻译：通过自动增益控制检测功能，逐步切割刀具断裂
公开(公告)号：US4806914A
公开(公告)日：1989-02-21
申请号：US46812
申请日：1987-05-07
申请人： Charles E. Thomas , James F. Bedard , Lawson P. Harris , Douglas G. Wildes , Steven R. Hayashi
发明人： Charles E. Thomas , James F. Bedard , Lawson P. Harris , Douglas G. Wildes , Steven R. Hayashi
IPC分类号： B23Q17/09 , G01H1/16 , G05B19/4065 , G08B21/00
CPC分类号： G01H1/16 , B23Q17/0957 , B23Q17/0971 , G05B19/4065 , G05B2219/37351
摘要： A tool break detection system has an automatic gain control to adjust the analog signal channel gain and hold the cutting vibration signal at a desired average level. The AGC time constant is long enough that the detection of abrupt tool breaks and sudden large signal level transistions by the digital signature recognition logic is unaffected. However, the gradual decrease in signal level produced by a crumbly-type break would be removed by AGC action. In a system with a hardware AGC, crossing a high gain threshold resets gain to a low value and the resulting abrupt and persisting change in signal level is detected by the abrupt tool break logic. Another embodiment uses the gain command output by a software AGC and generates a break detected signal directly, without resetting the gain command, as gain rises above a high gain alarm level which is recalculated at the start of each cut.
摘要翻译：刀具断裂检测系统具有自动增益控制，以调整模拟信号通道增益并将切割振动信号保持在期望的平均水平。 AGC时间常数足够长，使得数字签名识别逻辑的突然工具断开检测和突发的大信号电平转移不受影响。然而，通过AGC动作可以消除由脆弱型断路产生的信号电平的逐渐降低。在具有硬件AGC的系统中，跨越高增益阈值将增益重置为低值，并且突然的工具断开逻辑检测到所产生的信号电平的突然和持续变化。另一个实施例使用由软件AGC输出的增益指令，并且当增益高于在每次切断开始时重新计算的高增益警报水平时，直接生成中断检测信号而不复位增益命令。

2. 发明授权

US4724524A Vibration-sensing tool break and touch detector optimized for machining conditions 失效
标题翻译：针对加工条件优化的振动检测工具断裂和触摸检测器
公开(公告)号：US4724524A
公开(公告)日：1988-02-09
申请号：US744083
申请日：1985-06-12
申请人： Charles E. Thomas , Minyoung Lee , James F. Bedard , Steven R. Hayashi , Lawson P. Harris
发明人： Charles E. Thomas , Minyoung Lee , James F. Bedard , Steven R. Hayashi , Lawson P. Harris
IPC分类号： B23Q17/09 , G05B19/4065 , G06F15/46 , G08B23/00
CPC分类号： G05B19/4065 , B23Q17/0971 , G05B2219/37351
摘要： A Machine Tool Monitor detects significant cutting tool breakage and the first contact of an advancing tool to a workpiece, and does this by monitoring vibration signals produced by the machining of parts and interpreting patterns in these signals. Information from the part program improves the performance of the detector and optimizes it for the cutting conditions called for by the machine tool control. The analog channel gain of the monitor is adjusted and parameters controlling the digital pattern recognition logic are selected using part program information on machining parameters. The tool touch or tool break detection mode is selected by the part program.
摘要翻译：机床监视器检测到显着的切割刀具断裂和前进工具对工件的第一次接触，并通过监视由零件的加工产生的振动信号和这些信号中的解释模式来实现。来自零件程序的信息提高了检测器的性能，并优化了机床控制所要求的切割条件。调整监视器的模拟通道增益，并使用加工参数的零件程序信息来选择控制数字模式识别逻辑的参数。通过零件程序选择工具触摸或刀具断点检测模式。

3. 发明授权

US4773021A Adaptive model-based pressure control and method of resin cure 失效
标题翻译：基于模型的自适应压力控制和树脂固化方法
公开(公告)号：US4773021A
公开(公告)日：1988-09-20
申请号：US80355
申请日：1987-07-31
申请人： Lawson P. Harris , Ram K. Upadhyay
发明人： Lawson P. Harris , Ram K. Upadhyay
IPC分类号： B29C33/02 , B29C35/02 , B29C43/52 , B29C43/58 , B29K101/10 , B29K105/06 , G01N3/00 , G05B13/04 , G06F15/46 , G05B13/02
CPC分类号： G05B13/048 , B29C35/0288 , B29C43/58 , G01N2203/0092
摘要： Composites such as graphite reinforced PMR-15 resin are cured in a heated press by following a temperature schedule and changing from low to high pressure after the start of resin cross linking. A pressure control and method to time application of high pressure uses temperature and dielectric sensor outputs and a semi-empirical model of the resin electrical conductivity. The model estimates the future variation of resin conductivity and determines time-to-go to a maximum in electrical conductivity. A signal to apply high pressure is generated when the estimated time to maximum conductivity falls below a threshold. On-line fitting of the model to sensor data as it is gathered provides a mechanism for adapting the control to the peculiarities of a given batch of resins and a particular cure schedule.
摘要翻译：复合材料如石墨增强PMR-15树脂在热压机中通过遵循温度计划并在树脂交联开始后从低压变为高压来固化。压力控制和时间应用高压的方法使用温度和介电传感器输出以及树脂电导率的半经验模型。该模型估计树脂电导率的未来变化，并确定电导率的最大值。当估计的最大电导时间降到阈值以下时，产生施加高压的信号。模型在传感器数据收集时的在线拟合提供了一种使控制适应给定批次树脂的特性和特定固化计划的机制。

4. 发明授权

US5629506A Low voltage AC contactor including high recovery voltage gas system 失效
标题翻译：低压交流接触器包括高回收电压气体系统
公开(公告)号：US5629506A
公开(公告)日：1997-05-13
申请号：US260431
申请日：1994-06-15
申请人： Lawson P. Harris , Herman L. Finkbeiner , Minyoung Lee
发明人： Lawson P. Harris , Herman L. Finkbeiner , Minyoung Lee
IPC分类号： H01H50/38 , H01H9/30 , H01H33/76 , H01H50/54 , H01H33/04
CPC分类号： H01H9/302 , H01H33/765
摘要： An AC contactor having a high recovery voltage strength includes a contact assembly and a high recovery voltage gas system coupled to the contact assembly. The contact assembly includes two contact pads per electrical phase, with one of the contact pads being attached to a positioning device that selectively disposes the contact pad between a closed circuit position and an open circuit position. The high recovery voltage gas system includes a thermal gas evolving medium for introducing a high recovery voltage strength gas into the gap between the contact pads, which gas has a high glow discharge cathode voltage fall value, as determined for silver-based contacts, of not less than about 300 volts, and typically greater than about 500 volts. The high recovery voltage strength gas typically comprises carbon monoxide, carbon dioxide, water vapor, or the like. The thermal gas evolving medium typically is as a Group IA carbonate (e.g., sodium bicarbonate), and is disposed in the contact assembly.
摘要翻译：具有高恢复电压强度的交流接触器包括接触组件和耦合到接触组件的高回复电压气体系统。接触组件包括每个电相的两个接触焊盘，其中一个接触焊盘连接到定位装置，该定位装置选择性地将接触焊盘置于封闭的电路位置和开路位置之间。高回复电压气体系统包括用于将高恢复电压强度气体引入到接触焊盘之间的间隙中的热气放出介质，该气体具有高的辉光放电阴极电压下降值，如对银基触点所确定的那样小于约300伏，典型地大于约500伏。高回收电压强度气体通常包括一氧化碳，二氧化碳，水蒸气等。热气体放出介质通常为IA族碳酸盐（例如碳酸氢钠），并且设置在接触组件中。

5. 发明授权

US4131826A Triggering circuit for triggered vacuum gaps 失效
标题翻译：用于触发真空间隙的触发电路
公开(公告)号：US4131826A
公开(公告)日：1978-12-26
申请号：US821555
申请日：1977-08-03
申请人： Lawson P. Harris
发明人： Lawson P. Harris
IPC分类号： H02M1/04 , H02M1/02
CPC分类号： H02M1/04
摘要： An RLC triggering circuit employs an inductance coupled to the trigger electrode of a triggered vacuum gap device. A capacitance and a switch are coupled in series with the inductance. A diode in parallel with the series-coupled capacitance and switch serves to provide a long, unidirectional current pulse to prevent the triggered vacuum gap from chopping current and generating dangerous surge voltages.
摘要翻译： RLC触发电路采用耦合到触发真空间隙装置的触发电极的电感。电感和开关与电感串联耦合。与串联电容和开关并联的二极管用于提供长的单向电流脉冲，以防止触发的真空间隙斩波电流并产生危险的浪涌电压。

6. 发明授权

US5445033A Bottom pour melt flow rate measurement using magnetic field 失效
标题翻译：使用磁场倒入熔体流动速率测量
公开(公告)号：US5445033A
公开(公告)日：1995-08-29
申请号：US295566
申请日：1994-08-25
申请人： Sudhir D. Savkar , Walter Whipple, III , Lawson P. Harris
发明人： Sudhir D. Savkar , Walter Whipple, III , Lawson P. Harris
IPC分类号： B22F9/08 , G01F1/56 , G01F1/58 , G01F1/00
CPC分类号： B22F9/082 , G01F1/56 , G01F1/584 , G01F1/586 , B22F2999/00
摘要： This invention relates to an apparatus and method for directly measuring the bottom pour flow rate from heated ceramic crucible, hearth/tundish combinations used in metals refining/processing industry, plasma arc melting process (PAM), a cold hearth process or other similar processes such as for pouring ingots. Such structures of this type generally allow the bottom pour flow rate to be accurately measured in relative real time without adversely affecting the flow while withstanding the hostile surroundings typically associate with a heated crucible, tundishes, PAM, cold hearth process or other similar processes.
摘要翻译：本发明涉及一种用于直接测量加热陶瓷坩埚的底部倾倒流速的装置和方法，金属精炼/加工工业中使用的炉底/中间包组合，等离子体电弧熔化工艺（PAM），冷炉工艺或其它类似工艺对于浇铸锭。这种类型的这种结构通常允许底部倾倒流速在相对实时的情况下被精确地测量，而不会不利地影响流动，同时承受敌对的环境通常与加热的坩埚，中间包，PAM，冷床式过程或其它类似的过程相关联。

7. 发明授权

US3997748A Vacuum interrupter with primary electrode surrounded by high dielectric strength shield 失效
标题翻译：主电极由高介电强度屏蔽包围的真空灭弧室
公开(公告)号：US3997748A
公开(公告)日：1976-12-14
申请号：US589516
申请日：1975-06-23
申请人： Lawson P. Harris
发明人： Lawson P. Harris
IPC分类号： H01H33/662 , H01H33/664 , H01H9/34
CPC分类号： H01H33/66261 , H01H33/6646 , H01H2033/66269 , H01H2033/66292
摘要： When the butt contacts of a vacuum arc discharge device are parted, at least one of the contacts is withdrawn into a high dielectric strength shield, giving the device high current interruption capability. The shield may be grounded to an endwall of the device or electrically isolated therefrom. Facing the stationary contact with a hardened steel enables it to withstand the dielectric stress extant at recovery. Facing the moving contact with a refractory material allows high current and voltage interruption capability without adversely affecting current chopping performance, while limiting contact erosion and weld forces.
摘要翻译：当真空电弧放电装置的对接接触被分开时，至少一个触点被拉出到高介电强度屏蔽中，给予器件高电流中断能力。屏蔽件可以接地到设备的端壁或与其电隔离。用硬化钢面对固定接触使其能够承受回复时的介电应力现象。面对与耐火材料的移动接触允许高电流和电压中断能力，而不会不利地影响电流斩波性能，同时限制接触侵蚀和焊接力。

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