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11. 发明授权

US4323835A Simplified power factor controller for induction motor 失效
标题翻译：感应电动机简化功率因数控制器
公开(公告)号：US4323835A
公开(公告)日：1982-04-06
申请号：US127439
申请日：1980-03-05
申请人： Maw H. Lee
发明人： Maw H. Lee
IPC分类号： H02P25/04 , H02P23/00 , H02P27/02 , H02P7/36
CPC分类号： 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. Such power flow optimization is effected by utilization of a control voltage generated by the freewheeling induction motor during nonconduction periods of the switch. 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 by the control voltage augmenting to a varying degree the charging rate of a capacitor that triggers the semiconductor switch into conduction. Under increasing mechanical load conditions, the control voltage decreases, the decreased control 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 control voltage increases, the increased control voltage decelerating the charging 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。这样的功率流优化通过利用在续流感应电动机在开关非传导期间产生的控制电压来实现。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，由触发半导体的电容器充电速率的不同程度的控制电压而变化切换到传导。在增加的机械负载条件下，控制电压降低，降低的控制电压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，在机械负载条件的降低下，控制电压增加，控制电压的增加使电容器的充电速度减速，从而将触发开关转变为触发角增加的导通状态，其中由小于满载的无功电流引起的损耗感应电动机减少了功率因数的最终优化。

12. 发明授权

US4155269A Traveler and guide rail apparatus for screw drive closure operator 失效
标题翻译：螺旋驱动器关闭操作员的旅行者和导轨设备
公开(公告)号：US4155269A
公开(公告)日：1979-05-22
申请号：US833822
申请日：1977-09-16
申请人： Maw H. Lee , Barry V. Prehodka
发明人： Maw H. Lee , Barry V. Prehodka
IPC分类号： E05F15/16 , F16H25/20 , F16H1/18
CPC分类号： E05F15/673 , F16H25/2025 , E05Y2201/696 , E05Y2900/106 , Y10T74/19735 , Y10T74/19805
摘要： Improved traveler and guide rail apparatus for use with a garage door operator includes an elongated guide rail having a longitudinal screw channel and outwardly extending integral flanges disposed along the screw channel. An elongated T-shaped flange extends upwardly from the screw channel. An improved traveler apparatus for use with the guide rail includes a screw-driven traveler and a coupling traveler, each mounted on respective tracks formed by separate outside surfaces of the guide rail. The screw-driven traveler carries a nut engaging a screw in the screw channel through a slot between the flanges and further includes opposed U-shaped channels slidably mounted over the exterior surfaces of the guide rail flanges for slidable movement along the guide rail. The coupling traveler surrounds the screw-driven traveler and a substantial portion of the guide rail and includes a bore in an upper portion thereof, the bore having an interior surface slidably engaging the exterior surface of the screw channel for slidable movement along the guide rail. Upper shoulders of the coupling traveler above the bore are sufficiently close to the T-shaped flange to be guided thereby to prevent undesirable vertical or horizontal movement of the coupling traveler. Also, the coupling traveler is sufficiently relieved in the flange area to accommodate the screw-driven traveler therein. The coupling traveler is further provided with means for connecting it to a garage door, and carries a manually actuable bistable latch for selectively engaging and disengaging the coupling traveler with the screw-driven traveler for respective cooperative and independent slidable movement along the guide rail.
摘要翻译：与车库门操作者一起使用的改进的旅行者和导轨装置包括细长的导轨，该导轨具有沿螺钉通道设置的纵向螺纹通道和向外延伸的一体式凸缘。细长的T形凸缘从螺旋通道向上延伸。与导轨一起使用的改进的旅行器装置包括螺旋驱动的滑行器和联接滑行器，每个安装在由导轨的分开的外表面形成的各个轨道上。螺旋驱动的旅行者携带螺母，通过凸缘之间的狭槽接合螺钉通道中的螺钉，并且还包括可滑动地安装在导轨凸缘的外表面上的相对的U形通道，用于沿着导轨滑动。联接滑行器围绕螺杆驱动的滑行器和导轨的大部分并且在其上部包括孔，该孔具有可滑动地接合螺旋通道的外表面的内表面，用于沿着导轨滑动。孔之上的联接器的上肩足够靠近T形凸缘以被引导，从而防止联接器的不希望的垂直或水平移动。此外，联接滑行器在凸缘区域中被充分地释放以在其中容纳螺旋驱动的行进器。联接器还设置有用于将其连接到车库门的装置，并且携带可手动致动的双稳态闩锁，用于选择性地使联接滑行器与螺旋驱动的滑行器接合和分离，以便沿导轨进行各自的协调和独立的可滑动运动。

13. 发明授权

US5032758A Precision tubulation for self mounting lamp 失效
标题翻译：自安装灯的精密管路
公开(公告)号：US5032758A
公开(公告)日：1991-07-16
申请号：US413815
申请日：1989-09-28
申请人： John M. Davenport , Richard L. Hansler , Maw H. Lee
发明人： John M. Davenport , Richard L. Hansler , Maw H. Lee
IPC分类号： H01J61/88 , F21S8/10 , F21V19/00
CPC分类号： F21S48/1104 , F21S48/1186
摘要： An electric lamp fabricated from lamp tubing and terminating at one end in an elongated tubular portion which is of a precise, predetermined length with respect to the optical center of the lamp is inserted directly into and held in a bore in the rear of a reflector so that the optical center of the lamp is at the focal point of the reflector without need for adjusting the position of the lamp in the reflector.

14. 发明授权

US4155268A Traveler apparatus for screw drive closure operator 失效
标题翻译：螺旋驱动器关闭操作员的旅行器
公开(公告)号：US4155268A
公开(公告)日：1979-05-22
申请号：US833821
申请日：1977-09-16
申请人： Maw H. Lee , Barry V. Prehodka
发明人： Maw H. Lee , Barry V. Prehodka
IPC分类号： E05F15/16 , F16H25/20 , F16H1/18
CPC分类号： E05F15/673 , F16H25/2025 , E05Y2900/106 , Y10T74/19735 , Y10T74/19805
摘要： An improved traveler apparatus includes a screw-driven traveler and a coupling traveler which are both slidably mounted within a track that is formed by the interior surfaces of opposed U-shaped channels of a guide rail. The guide rail also includes a screw channel which communicates through a longitudinal slot with the track. The screw-driven traveler includes a nut that engages a screw in the screw channel through the slot. The coupling traveler includes a manually actuable, bistable latch to selectively engage and disengage the coupling traveler and the screw-driven traveler for cooperative and independent slidable movement within the track, respectively, and the coupling traveler is adapted for connection to a closure, such as a garage door, to open or close same as the coupling traveler is moved along the track.
摘要翻译：一种改进的行走装置包括螺旋驱动的滑行器和联接滑行器，它们可滑动地安装在由导轨的相对的U形通道的内表面形成的轨道中。导轨还包括通过纵向槽与轨道连通的螺旋通道。螺杆驱动的滑行器包括螺母，该螺母通过所述槽与螺钉通道中的螺钉啮合。联接器包括可手动致动的双稳态闩锁，以分别选择性地接合和脱离联接滑行器和螺旋驱动滑行器，用于在轨道内协调和独立的可滑动运动，并且耦合滑行器适于连接到闭合件，例如一个车库门，打开或关闭相同的耦合旅行者沿着轨道移动。

15. 发明授权

US4131830A Position control and obstruction detector apparatus for a motor-driven door operator 失效
标题翻译：用于电动门操作员的位置控制和阻塞检测装置
公开(公告)号：US4131830A
公开(公告)日：1978-12-26
申请号：US876004
申请日：1978-02-08
申请人： Maw H. Lee , Barry V. Prehodka
发明人： Maw H. Lee , Barry V. Prehodka
IPC分类号： E05F15/00 , E05F15/16 , H02P1/00 , H02P3/00
CPC分类号： E05F15/673 , E05F15/41 , E05Y2201/214 , E05Y2201/244 , E05Y2201/434 , E05Y2201/47 , E05Y2201/654 , E05Y2400/354 , E05Y2400/445 , E05Y2600/11 , E05Y2600/13 , E05Y2900/106
摘要： An improved position control apparatus is disclosed to control a motor-driven door operator to halt movement of a door at an open position and a closed position. The position control apparatus includes a control screw means in the form of a threaded shaft extension of the motor shaft or a threaded rod coupled to the motor shaft which is rotated when the motor is energized. A travel nut is threadedly engaged with the control screw means and is constrained against rotational motion so as to reciprocate along the control screw means. Position detection means, such as switches, are disposed near the control screw means for actuation by the travel nut to control the motor as the door approaches the open position and the closed position. In another embodiment, a toggle switch is mounted on the travel nut, and the switches are replaced by stops for actuation of the toggle switch to control the motor. An improved obstruction detector apparatus is also provided to control the motor if an obstruction is encountered as the door moves between the open position and the closed position. The obstruction detector apparatus includes a safety switch which is actuable by rotation of the motor casing due to reaction torque, if an obstruction is encountered as the door moves in one direction, and a lever that is actuable by rotation of the motor casing, if an obstruction is encountered as the door moves in an opposite direction, to actuate the safety switch.
摘要翻译：公开了一种改进的位置控制装置，以控制电动门操作者停止门在打开位置和关闭位置的移动。位置控制装置包括：电动机轴的螺纹轴延伸形式的控制螺丝装置或联接到电动机轴的螺杆，该电动机轴在电动机通电时旋转。行进螺母与控制螺钉装置螺纹接合并且被限制为旋转运动，以沿着控制螺丝装置往复运动。诸如开关之类的位置检测装置设置在控制螺丝装置附近，用于通过行进螺母来驱动，以在门接近打开位置和关闭位置时控制马达。在另一个实施例中，拨动开关安装在行进螺母上，并且开关由用于致动拨动开关的止动件代替以控制马达。还提供了一种改进的障碍物检测装置，用于在门在打开位置和关闭位置之间移动时遇到障碍物时控制电动机。障碍物检测装置包括一安全开关，如果在一个方向上移动时遇到障碍物，则由于反作用转矩可以通过马达壳体的旋转而致动的安全开关，以及通过马达壳体的旋转可以驱动的杆，如果当门沿相反的方向移动时，遇到障碍物，以致启动安全开关。

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