公开(公告)号：US6015959A

公开(公告)日：2000-01-18

申请号：US183464

申请日：1998-10-30

申请人： Robert Michael Slepian ,  William Christopher Farrow ,  Michael Thomas Little ,  H. Richard Beck ,  William George Eberts ,  David Curtis Turner

发明人： Robert Michael Slepian ,  William Christopher Farrow ,  Michael Thomas Little ,  H. Richard Beck ,  William George Eberts ,  David Curtis Turner

IPC分类号： H01H3/30 ,  H01H11/00 ,  H01H5/00

CPC分类号： H01H3/3015 ,  H01H11/0006 ,  H01H2003/3068 ,  H01H3/3026

摘要： Molded case electric power switches such as circuit breakers, disconnects and transfer switches have an energy storage spring which rotates a cam assembly to close and initiate opening of the switch contacts. The cam assembly includes a drive cam with a cam lobe which engages a drive cam follower on the moving contact assembly. Due to space limitations, the cam assembly is positioned so that the drive cam follower initially moves toward the cam assembly during closing. To accommodate for this, the cam lobe has a generally radial leading edge to prevent binding of the drive cam follower. A single latch mechanism latches the cam assembly in a spring charged position and in a closed position. A Y-shaped latch member has one leg which is engaged by a latch, a second leg which engages stops on the drive cam at the charged position and the closed position, and a third leg which sequentially engages the stops to reset the latch mechanism. The cam assembly, a charging mechanism including a rachet wheel and handle, the latch mechanism and the energy storage spring are all mounted between and supported by a pair of side plates. In a multi-pole switch, the drive cam engages the moving contact assembly of one pole which is coupled to the moving contact assemblies of the other poles by a cross-bar.

摘要翻译： 模制电力开关如断路器，断路器和转换开关具有能量储存弹簧，其使凸轮组件旋转以闭合并启动开关触点的打开。 凸轮组件包括具有凸轮凸角的驱动凸轮，凸轮凸角与可动触头组件上的驱动凸轮从动件接合。 由于空间限制，凸轮组件被定位成使得驱动凸轮从动件在关闭期间最初朝向凸轮组件移动。 为了适应这一点，凸轮凸角具有大致径向的前缘以防止驱动凸轮从动件的结合。 单个闩锁机构将凸轮组件锁定在弹簧加载位置并处于关闭位置。 Y形闩锁构件具有由闩锁接合的一个腿部，在充电位置和关闭位置处接合在驱动凸轮上的止动件的第二腿部，以及顺序地接合止动件以重置闩锁机构的第三腿部。 凸轮组件，包括旋转轮和手柄的充电机构，闩锁机构和储能弹簧都安装在一对侧板之间并由一对侧板支撑。 在多极开关中，驱动凸轮接合一极的可移动接触组件，其通过横杆联接到另一个极的移动接触组件。

公开(公告)号：US06456495B1

公开(公告)日：2002-09-24

申请号：US09523607

申请日：2000-03-13

申请人： Christopher John Wieloch ,  Anthony Edward Develice ,  Michael Thomas Little

发明人： Christopher John Wieloch ,  Anthony Edward Develice ,  Michael Thomas Little

IPC分类号： H05K714

CPC分类号： H05K7/1484 ,  H05K7/1468 ,  H05K7/1477

摘要： A logic controller formed by self-contained device modules plugged onto a DIN rail and onto a backplane contained in the DIN rail, the modules variously comprising a power supply, a logic control, I/O devices and gateways, each I/O device having microprocessor power, and the modules having a sliding lock movable into position adjacent DIN-rail-engaging flexible tabs to block deflection of the tabs and removal of the module from the DIN rail.

摘要翻译： 由独立的设备模块形成的逻辑控制器，其插入到DIN导轨和包含在DIN导轨中的背板上，各模块包括电源，逻辑控制，I / O设备和网关，每个I / O设备具有 微处理器电源，并且具有滑动锁的模块可移动到邻近DIN导轨接合的柔性突片的位置，以阻止突片的偏转和将模块从DIN导轨移除。

公开(公告)号：US06377143B1

公开(公告)日：2002-04-23

申请号：US09681320

申请日：2001-03-16

申请人： Xin Zhou ,  Michael Thomas Little

发明人： Xin Zhou ,  Michael Thomas Little

IPC分类号： H01H6702

CPC分类号： H01H50/546 ,  H01H3/001 ,  H01H77/06 ,  H01H77/10 ,  H01H2009/305 ,  H01H2077/025

摘要： A system and method for preventing contact weld under various fault current conditions is disclosed. The system includes a contactor having stationary and movable contacts biased towards each other and switchable between an open and closed position. Energization of an electromagnetic coil engages the contacts creating an electric path for current flow through the contactor. Pulse width modulation is used to lower the power to the coil and maintain the contacts in the closed position. The contactor is equipped with safeguards to prevent contact welding. Under low fault currents, welding is prevented by contact material composition. Under intermediate fault currents, the contacts are blown open and remain open using magnetic components until the arc dissipates and the contacts have cooled sufficiently. Under high fault currents, the arrangement causes the contacts to blow open and separate the armature from the coil preventing re-engagement of the contacts until the coil is energized again.

摘要翻译： 公开了一种用于在各种故障电流条件下防止接触焊接的系统和方法。 该系统包括接触器，该接触器具有相对于彼此偏置并且可在打开和关闭位置之间切换的固定和可移动接触件。 电磁线圈的通电接触触点，产生电流通过接触器的电路。 脉冲宽度调制用于降低线圈的功率并将触点保持在关闭位置。 接触器配有防止触点焊接的保护措施。 在低故障电流下，通过接触材料成分防止焊接。 在中间故障电流下，触点被打开并使用磁性部件保持开放，直到电弧消失，并且触点已经充分冷却。 在高故障电流下，这种布置使得触头打开并将电枢与线圈分离，从而防止触点的再次接合，直到线圈再次通电。

公开(公告)号：US5892885A

公开(公告)日：1999-04-06

申请号：US76559

申请日：1998-05-12

申请人： Jackson Henry Smith ,  Michael Thomas Little

发明人： Jackson Henry Smith ,  Michael Thomas Little

IPC分类号： H02P1/22 ,  H01H9/06 ,  H01H9/52 ,  H02P3/08 ,  H02P7/29 ,  H02P5/165

CPC分类号： H01H9/061 ,  H01H2009/065 ,  H01H2300/002 ,  H01H9/52 ,  Y10S388/937

摘要： A motor control circuit for a power tool includes a function switch which has a first battery contact, a speed control contact, a bypass contact and, a second battery contact connected in that order in a line. The function switch also has a movable contact which sequentially connects the first battery contact to the bypass contact, the speed control contact to the second battery contact, and the bypass contact to the second battery contact. A solid state switch has conduction path connecting the speed control contact to the second motor terminal wherein the conduction path is controlled in response to an oscillator signal.

摘要翻译： 一种用于电动工具的电动机控制电路包括功能开关，该功能开关具有第一电池触点，速度控制触点，旁路触点和沿着该线顺序连接的第二电池触点。 功能开关还具有将第一电池触点顺序地连接到旁路触点，到第二电池触点的速度控制触点和与第二电池触点的旁路触点的可动触点。 固态开关具有将速度控制触点连接到第二电动机端子的传导路径，其中响应于振荡器信号来控制导电路径。