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1. 发明授权

US4304044A Method for forming self-regulating heat trace cable 失效
标题翻译：形成自调节热线电缆的方法
公开(公告)号：US4304044A
公开(公告)日：1981-12-08
申请号：US185483
申请日：1980-09-09
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H05B3/56 , H05B3/00
CPC分类号： H05B3/56 , Y10T29/49083
摘要： Electrically parallel but positionally serial, helically wound segments of heating wire in a cable are each controlled by a chip (thermistor) and are connected to the cable proper by wrapping around notches formed in the insulation of the cable proper at first one side and then the other of the cable. The inner and outer-faces of each chip are connected into each segment by direct contact or by leads at spaced points between which the heating wire is severed. An extruded casing is shrunk-fit over the other parts.
摘要翻译：电缆中的电气并行但位置连续的，螺旋缠绕的加热丝线段各自由芯片（热敏电阻）控制，并通过在第一侧缠绕形成在电缆本体的绝缘体中的凹口而连接到电缆本体，然后其他电缆。每个芯片的内表面和外表面通过直接接触连接到每个段中，或者通过引线在间隔的点连接，在该点处，加热丝被切断。挤压外壳在其他部分收缩。

2. 发明授权

US4250400A Flexible temperature self regulating heating cable 失效
标题翻译：柔性温度自调节加热电缆
公开(公告)号：US4250400A
公开(公告)日：1981-02-10
申请号：US95249
申请日：1979-11-19
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H05B3/56
CPC分类号： H05B3/56
摘要： Electrically parallel but positionally serial, helically wound segments of heating wire in a cable are each controlled by a chip (thermistor) and are connected to the cable proper by wrapping around notches formed in the insulation of the cable proper at first one side and then the other of the cable. The inner and outer-faces of each chip are connected into each segment by direct contact or by leads at spaced points between which the heating wire is severed. An extruded casing is shrunk-fit over the other parts.
摘要翻译：电缆中的电气并行但位置连续的，螺旋缠绕的加热丝线段各自由芯片（热敏电阻）控制，并通过在第一侧缠绕形成在电缆本体的绝缘体中的凹口而连接到电缆本体，然后其他电缆。每个芯片的内表面和外表面通过直接接触连接到每个段中，或者通过引线在间隔的点连接，在该点处，加热丝被切断。挤压外壳在其他部分收缩。

3. 发明授权

US4369403A Power factor controller for induction motor 失效
标题翻译：感应电动机功率因数控制器
公开(公告)号：US4369403A
公开(公告)日：1983-01-18
申请号：US204361
申请日：1980-09-12
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H02P23/00 , H02P5/40
CPC分类号： H02P23/26
摘要： An AC induction motor for driving a varying mechanical load is powered via a Triac switch electrically inserted in series with the motor and its AC supply. A low ohmic value resistor, also in series with the motor, continuously samples the load current. When the peak value of the sampled load current is below a predetermined value indicative of a near full load condition, the Triac is switched to a conducting state at a predetermined electrical angle from each immediately preceding trailing edge of the sampled load current pulses or of sampled line voltage pulses applied to the motor. Such a phase triggering switching scheme reduces the power applied to the motor by reducing the period of time that each half-cycle of the supply voltage is applied to the motor, which, in turn, advantageously reduces the losses caused by the reactive current in the less than fully loaded induction motor. At or near a full load condition, the Triac is held or latched in a conducting state to continuously apply full supply voltage to the motor.
摘要翻译： PCT No.PCT / US80 / 00604 Sec。 371日期1980年9月12日 102（e）1980年9月12日PCT PCT日期：1980年5月21日PCT公布。出版物WO80 / 02895 日期为1980年12月24日。用于驱动变化的机械负载的交流感应电动机通过电动插入与电动机及其交流电源串联的Triac开关来供电。与电机串联的低电阻值电阻器连续采样负载电流。当采样负载电流的峰值低于表示接近满载状态的预定值时，三端双向可控硅开关被切换到来自采样负载电流脉冲的每个紧接在前的后沿的预定电角度的导通状态，或采样施加到电动机的线电压脉冲。这种相位触发开关方案通过减少施加到电动机的电源电压的每个半周期的时间周期来减少施加到电动机的功率，这反过来有利地减少了由电动机中的无功电流引起的损耗小于满载感应电机。在满载或接近满载条件下，三端双向可控硅开关被保持或锁定在导通状态，以连续向电机施加全电源电压。

4. 发明授权

US4369399A Control circuit for a motor-driven door operator 失效
标题翻译：电动门操作器的控制电路
公开(公告)号：US4369399A
公开(公告)日：1983-01-18
申请号：US248969
申请日：1981-03-30
申请人： Maw H. Lee , Chun F. Chen
发明人： Maw H. Lee , Chun F. Chen
IPC分类号： E05F15/00 , E05F15/16 , H02H7/085 , H02P3/08
CPC分类号： E05F15/673 , E05F15/41 , E05F15/668 , H02H7/0851 , E05Y2900/106
摘要： A door operator includes a motor-driven mechanism to move a door between an open position and a closed position in response to activation of an improved control circuit. The improved control circuit includes circuitry to initialize the sequence of operation of the motor upon connection of power after installation of the door operator or upon restoration of power after a power outage. Obstruction detection circuitry is also included in the control circuit to stop or reverse the motor if the door encounters an obstacle during movement between the open and closed positions. Time delay circuitry cooperates with the obstruction detection circuitry so as to prevent stopping or reversing the motor due to the inertia of the door and of the drive mechanism as the door starts to open or close upon activation of the control circuit. During the time delay period, however, further manual activation of the control circuit is operative to stop and/or reverse movement of the door. As the door moves in one direction, movement can be stopped and restarted in the opposite direction upon consecutive manual activations of the control circuit. When the door nears the closed position, timer circuitry is activatd to energize the motor for a predetermined time or until sufficient resistance to door movement is met to activate the obstruction detection circuitry whereupon the motor is stopped. Maximum run-time circuitry is also included to set the maximum time allowable for energization of the motor to move the door in either direction between the open and closed positions.
摘要翻译：门操作器包括电机驱动机构，以响应于改进的控制电路的启动而在打开位置和关闭位置之间移动门。改进的控制电路包括用于在门操作者安装之后或在断电之后恢复电力时初始化电动机的操作顺序的电路。如果门在打开位置和关闭位置之间移动期间遇到障碍物，阻塞检测电路也包括在控制电路中以停止或反转电动机。时间延迟电路与障碍物检测电路配合，以防止当门和控制电路启动时门开始打开或关闭时由于门和驱动机构的惯性而使马达停止或反转。然而，在延时期间，进一步手动启动控制电路可以停止和/或反向移动门。当门沿一个方向移动时，可以在控制电路的连续手动激活时以相反方向停止运动并重新起动。当门靠近关闭位置时，定时器电路被激活以给电机通电预定的时间，或者直到达到对门移动的足够的阻力来启动障碍物检测电路，于是马达被停止。还包括最大运行时间电路，以设置允许电机通电的最大时间，以便在打开和关闭位置之间的任一方向上移动门。

5. 发明授权

US4333046A Power factor control of a three-phase induction motor 失效
标题翻译：三相感应电动机的功率因数控制
公开(公告)号：US4333046A
公开(公告)日：1982-06-01
申请号：US127441
申请日：1980-03-05
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H02J3/18 , H02P23/00 , H02P7/18
CPC分类号： H02J3/1892 , H02P23/26 , Y02P80/116 , Y10S323/91
摘要： First and second input currents to a three-phase AC induction motor of either delta or wye winding configuration are directly regulated by a pair of phase-triggered, gate-controlled, semiconductor switches series-inserted between the motor and two phases of its three-phase AC power source, the third input current being the Kirchoff resultant of the two regulated input currents. The half-cycle firing points or firing angles of the gate-controlled switches are varied together to apply more or less power to the motor as a function of mechanical load to optimize the power factor of the motor. Voltage imbalances in the motor windings caused by directly regulating only two of three input currents are tolerable due to the current limiting effect of the gate-controlled switches when the induction motor is at less than full mechanical load, such current limiting minimizing heat losses (I.sup.2 R) caused by the voltage imbalance condition.
摘要翻译：对三角形或三角形绕组配置的三相交流感应电动机的第一和第二输入电流由一对相位触发的栅极控制的半导体开关直接调节，该开关串联插入电动机和其三相的两相之间，三相交流电源，第三输入电流是两个稳压输入电流的Kirchoff结果。栅极控制开关的半周期点火点或触发角度一起变化，作为机械负载的函数向电动机施加更多或更少的功率，以优化电动机的功率因数。由于直接调节三个输入电流中的两个电流引起的电动机绕组中的电压不平衡是可以承受的，这是由于当感应电动机处于小于全机械负载时门控开关的电流限制作用，这样限流使热损失最小（I2R ）由电压不平衡状态引起。

6. 发明授权

US4287464A Power factor controller for an induction motor using transistor switch means with variable breakdown voltage 失效
标题翻译：使用具有可变击穿电压的晶体管开关装置的感应电动机的功率因数控制器
公开(公告)号：US4287464A
公开(公告)日：1981-09-01
申请号：US104700
申请日：1979-12-17
申请人： Maw H. Lee , John E. Keim
发明人： Maw H. Lee , John E. Keim
IPC分类号： H02P23/00 , H02P7/36 , H02P7/58
CPC分类号： H02P23/26
摘要： A phase-triggered, gate-controlled AC semiconductor switch of the thyrister type in series with an induction motor and its AC supply, optimizes power flow to the motor under changing mechanical load conditions by varying the amount of supply voltage applied to the motor over each half-cycle of the AC supply. The triggering point of the semiconductor switch relative to the preceding zero crossing point of the supply voltage, that is, the switch firing angle or delay angle, is varied as a function of mechanical loading on the motor by means of a load current induced feedback voltage which varies the breakdown or triggering voltage of a two-transistor switch functioning as a variable trigger diode between the gate of the semiconductor switch and a turn-on capacitor charged by the AC supply voltage during non-conducting periods of the semiconductor switch. Under increasing mechanical load conditions, the feedback voltage increases in proportion to increasing load current, the increasing feedback voltage lowering the breakdown voltage of the two-transistor switch to trigger the semiconductor switch into conduction at a reduced firing angle, wherein power flow to the motor is increased. Conversely, under decreasing mechanical load conditions, the feedback voltage decreases in proportion to decreasing load current, the decreasing feedback voltage raising the breakdown voltage of the two-transistor switch to trigger the semiconductor switch into conduction at an increased firing angle, wherein losses caused by reactive current in the less-than-fully-loaded induction motor are reduced with a resultant optimization of power factor.
摘要翻译：与感应电动机及其交流电源串联的相位触发的门控交流半导体开关与感应电动机及其交流电源串联，通过改变每个电动机上施加到电动机的电源电压的量，在变化的机械负载条件下优化到电动机的功率流交流电源的半周期。半导体开关相对于电源电压的先前过零点的触发点，即开关触发角或延迟角，通过负载电流感应反馈电压作为电动机上的机械负载的函数而变化其在半导体开关的非导通时段期间改变用作半导体开关的栅极之间的可变触发二极管的二晶体管开关的触发电压和由交流电源电压充电的导通电容器。在增加的机械负载条件下，反馈电压与增加的负载电流成比例地增加，增加的反馈电压降低了双晶体管开关的击穿电压，以将触发半导体开关转换成导通，其中功率流向电动机增加了。相反，在机械负载条件下，反馈电压与负载电流减小成正比，降低的反馈电压提高了双晶体管开关的击穿电压，从而以增加的触发角触发半导体开关导通，其中由由于功率因数的最优化，小于满载感应电动机的无功电流减小。

7. 发明授权

US4271386A Power factor controller for induction motor 失效
标题翻译：感应电动机功率因数控制器
公开(公告)号：US4271386A
公开(公告)日：1981-06-02
申请号：US100516
申请日：1979-12-05
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H02J3/18 , H02P23/00 , H02P5/40
CPC分类号： H02J3/1892 , H02P23/26
摘要： A phase-triggered, gate-controlled AC semiconductor switch, in series with an induction motor and its AC supply, optimizes power flow to the motor under changing mechanical load conditions by varying the amount of supply voltage applied to the motor over each half-cycle of the AC supply. The triggering point of the switch relative to the preceding zero crossing point of the supply voltage, that is, the switch firing angle or delay angle, is varied as a function of mechanical loading on the motor by means of a load current-induced feedback voltage augmenting to a varying degree the charging rate of a capacitor which triggers the semiconductor switch into conduction. Under increasing mechanical load conditions, the feedback voltage increases in proportion to the increasing load current, the increasing feedback voltage accelerating the charging rate of the capacitor to trigger the switch into conduction at a reduced firing angle, wherein power flow to the motor is increased. Conversely, under decreasing mechanical load conditions, the feedback voltage decreases in proportion to the decreasing load current, the decreasing feedback voltage decelerating the charge rate of the capacitor to trigger the switch into conduction at an increased firing angle, wherein losses caused by reactive current in the less-than-fully-loaded induction motor are reduced with a resultant optimization of power factor.
摘要翻译：与感应电动机及其交流电源串联的相位触发的门控交流半导体开关通过改变在每个半周期上施加到电动机的电源电压量来优化在变化的机械负载条件下对电动机的功率流的交流电源。开关相对于电源电压的先前过零点的触发点，即开关触发角或延迟角，通过负载电流引起的反馈电压作为电动机上的机械负载的函数而变化增加触发半导体开关导通的电容器的充电速率的变化程度。在增加的机械负载条件下，反馈电压与增加的负载电流成比例地增加，反馈电压的增加加速了电容器的充电速率，从而以降低的触发角将开关触发成导通，其中提高到电动机的功率流。相反，在机械负载条件下，反馈电压与负载电流的减小成正比，降低反馈电压使电容器的充电速度减速，从而将触发开关转换为导通，增加触发角，其中由无功电流引起的损耗通过功率因数的最优化，减小了不足以满载的感应电动机。

8. 发明授权

US4263536A Control circuit for a motor-driven door operator 失效
标题翻译：电动门操作器的控制电路
公开(公告)号：US4263536A
公开(公告)日：1981-04-21
申请号：US931668
申请日：1978-08-07
申请人： Maw H. Lee , Chun F. Chen
发明人： Maw H. Lee , Chun F. Chen
IPC分类号： E05F15/10 , E05F15/00 , E05F15/16 , H02H7/085 , H02P1/22
CPC分类号： E05F15/40 , E05F15/673 , H02H7/0851 , E05F15/41 , E05Y2400/54 , E05Y2900/106 , Y10T307/832
摘要： A door operator includes a motor-driven mechanism to move a door between an open position and a closed position in response to activation of an improved control circuit. The improved control circuit includes circuitry to initialize the sequence of operation of the motor upon connection of power after installation of the door operator or upon restoration of power after a power outage. Obstruction detection circuitry is also included in the control circuit to stop or reverse the motor if the door encounters an obstacle during movement between the open and closed positions. Time delay circuitry cooperates with the obstruction detection circuitry so as to prevent stopping or reversing the motor due to the inertia of the door and of the drive mechanism as the door starts to open or close upon activation of the control circuit. During the time delay period, however, further manual activation of the control circuit is operative to stop and/or reverse movement of the door. As the door moves in one direction, movement can be stopped and restarted in the opposite direction upon consecutive manual activations of the control circuit. When the door nears the closed position, timer circuitry is activated to energize the motor for a predetermined time or until sufficient resistance to door movement is met to activate the obstruction detection circuitry whereupon the motor is stopped. Maximum run-time circuitry is also included to set the maximum time allowable for energization of the motor to move the door in either direction between the open and closed positions.
摘要翻译：门操作器包括电机驱动机构，以响应于改进的控制电路的启动而在打开位置和关闭位置之间移动门。改进的控制电路包括用于在门操作者安装之后或在断电之后恢复电力时初始化电动机的操作顺序的电路。如果门在打开位置和关闭位置之间移动期间遇到障碍物，阻塞检测电路也包括在控制电路中以停止或反转电动机。时间延迟电路与障碍物检测电路配合，以防止当门和控制电路启动时门开始打开或关闭时由于门和驱动机构的惯性而使马达停止或反转。然而，在延时期间，进一步手动启动控制电路可以停止和/或反向移动门。当门沿一个方向移动时，可以在控制电路的连续手动激活时以相反方向停止运动并重新起动。当门靠近关闭位置时，定时器电路被激活以给电机通电预定的时间，或者直到达到对门移动的足够的阻力来启动阻塞检测电路，从而电动机停止。还包括最大运行时间电路，以设置允许电机通电的最大时间，以便在打开和关闭位置之间的任一方向上移动门。

9. 发明授权

US4232308A Wireless alarm system 失效
标题翻译：无线报警系统
公开(公告)号：US4232308A
公开(公告)日：1980-11-04
申请号：US50802
申请日：1979-06-21
申请人： Maw H. Lee , John E. Keim
发明人： Maw H. Lee , John E. Keim
IPC分类号： G08B1/08 , G08B21/04 , G08B1/00
CPC分类号： G08B1/08
摘要： A radio receiver equipped central control unit continuously monitors at least one battery-powered remote transmitter activated in response to predetermined alarm conditions, such as open doors and windows, fire, smoke, low transmitter battery voltage, and the like. In its activated condition, the transmitter is cycled to radiate a one-second duration radio frequency signal every 30 seconds, such cycling being established by transmitter timer circuitry series-inserted between the transmitter and its battery power source. The transmitted signal is received by the central control unit which, in response to the received signal, selects and activates one or more alarm indicators for a predetermined time period. Such selection and activation of particular alarm indicators and the duration of their activation are determined by switching and timing circuitry series-inserted between the central control unit's radio frequency receiver and the various alarm indicators.
摘要翻译：配备有无线电接收器的中央控制单元连续地监视至少一个电池供电的远程发射器，以响应于诸如打开的门窗，火，烟，低发射机电池电压等预定的报警条件而被激活。在其激活状态下，发射机循环，以每30秒辐射一秒持续时间的射频信号，这种循环由发射机定时器电路串联插入在发射器和其电池电源之间建立。所发送的信号由中央控制单元接收，响应于接收到的信号，在预定的时间段内选择并激活一个或多个报警指示符。特定报警指示器的选择和激活及其激活的持续时间由串联插入在中央控制单元的射频接收机和各种报警指示器之间的切换和定时电路确定。

10. 发明授权

US4414634A Fluid flow totalizer 失效
标题翻译：流体流量累加器
公开(公告)号：US4414634A
公开(公告)日：1983-11-08
申请号：US284526
申请日：1981-07-17
申请人： Timothy R. Louis , Carl A. Gedeon , Maw H. Lee , Eugene V. Erjavec
发明人： Timothy R. Louis , Carl A. Gedeon , Maw H. Lee , Eugene V. Erjavec
IPC分类号： E21B47/10 , G01F15/06 , G06Q50/06 , G06F15/32 , G01F1/00
CPC分类号： E21B47/10 , G01F15/063 , G06Q50/06
摘要： A data totalizer for use with a fluid flow chart recorder is disclosed. The chart recorder may be for a gas well to record the flow of gas into a collection pipe and such chart recorder has a movable chart, usually a circular chart, with a first marker pen to record on the chart a static pressure within the pipe collection system and a second marker pen to record on the chart a fluid flow signal in accordance with a differential pressure across an orifice in the gas well pipe, and with first and second fluid pressure motors in the chart recorder to move the first and second marker pens. The data totalizer includes first and second linear variable displacement transformers, with linkage connected directly in the chart recorder to move in accordance with movements of the pens and connected to move the linearly displaceable elements in the two transformers. An electronic multiplier is provided to multiply together the electrical outputs of the first and second transformers to obtain a product. An electronic circuit is provided to calculate the square root of such product to obtain an electrical signal proportional to the rate of fluid flow. This signal may be multiplied by a time signal to obtain the total quantity of fluid flow, such as in cubic feet.
摘要翻译：公开了一种与流体流程图记录器一起使用的数据累加器。图表记录器可以用于气井以将气流记录到收集管中，并且这种图表记录器具有可移动图表，通常是圆形图，其中第一标记笔在图表上记录管道收集体内的静压力系统和第二标记笔，以在图表上记录根据气井管中的孔口上的差压以及图表记录器中的第一和第二流体压力马达在第一和第二标记笔上的流体流动信号。数据累加器包括第一和第二线性可变位移变压器，其连接件直接连接在图表记录器中，以根据笔的移动而移动，并连接以移动两个变压器中的线性可位移元件。提供电子倍增器以将第一和第二变压器的电输出相乘以获得产品。提供电子电路以计算这种产品的平方根以获得与流体流速成比例的电信号。该信号可以乘以时间信号以获得流体流量的总量，例如立方英尺。

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