-
公开(公告)号：US4158829A
公开(公告)日：1979-06-19
申请号：US829809
申请日：1977-09-01
申请人： Robert C. Gutberlet
发明人： Robert C. Gutberlet
CPC分类号： H01H9/30 , H01H1/18 , H01H1/50 , H01H33/596
摘要： An electromagnetically operated DC power contactor for high voltage and current use constructed to afford the required contact pressure at the arcing and main contacts with minimal magnet force together with the provision of contact wipe and shearing and rolling action to effect breaking of welds that might occur during contact closure due to bounce at the arcing contacts. A trifurcated movable contact structure is incorporated in this contactor to reduce the current in each of the individual contact segments to approximately 1/3 of the full load current thereby reducing the effective blow-apart force developed at the contacts during fault conditions. Each of the three movable contact segments has both an arcing and main contact at right angles to one another and with similar current carrying capacity, and the three segments together effectively provide a total of three pairs or six current paths to the stationary contact when the contactor is closed to reduce the force required to maintain the contacts in the closed position during a fault condition. The mechanical linkage used to provide the necessary contact motion is constructed to provide maximum mechanical advantage for the device. For this purpose, the position of the pivot of the movable contact assembly is such that maximum contact force develops a force in a downward direction past the armature pivot. This effectively minimizes the torque requirement of the magnet structure since the operating lever arm of the armature and movable contact is reduced considerably as compared to that of the lever arm of a conventional structure.
摘要翻译： 一种用于高压和电流使用的电磁操作直流电力接触器，其构造为在电弧和主触点处以最小的磁力提供所需的接触压力，同时提供接触擦拭和剪切和滚动动作，以实现可能发生的焊缝断裂 触点闭合由于电弧触点反弹。 在该接触器中结合有三叉可动接触结构，以将每个单个接触段中的电流减小到全负载电流的大约1/3，从而减少在故障条件期间在触点处产生的有效的分流力。 三个可动接触段中的每一个都具有彼此成直角的电弧和主接触，并且具有相似的载流能力，并且当接触器的三个部分一起有效地提供总共三对或六个电流通路到静触点 闭合以减少在故障状态期间将触点保持在关闭位置所需的力。 用于提供必要的接触运动的机械连杆被构造成为装置提供最大的机械优点。 为此，可移动接触组件的枢轴的位置使得最大接触力在向下的方向上产生通过电枢枢轴的力。 由于与常规结构的杠杆臂相比，电枢和可动触点的操作杆臂大大减小，因此这有效地使磁体结构的转矩要求最小化。
-
2.发明授权Pivoting and sliding contactors and operating member therefor in electric switches 失效旋转和滑动接触器及其电动开关的操作构件
公开(公告)号：US4127754A
公开(公告)日：1978-11-28
申请号：US730367
申请日：1976-10-07
CPC分类号： H01H23/28
摘要： Improved pivoting and sliding contactors and an operating member for lever and rocker operated electric switches are disclosed. A resiliently pivotally mounted forked operating member engages with the contactors adjacent opposite sides thereof and pivots and slides the contactors on a common contact terminal into and out of sliding engagement with contact terminals on either side of the common terminal. Separate contactor forms for maintained ON-OFF-ON and momentary ON-ON type circuit commutations are used.
摘要翻译： 公开了改进的枢转和滑动接触器以及用于杠杆和摇臂操作的电开关的操作构件。 弹性地枢转地安装的叉形操作构件与邻近其相对侧的接触器接合，并且将公共接触端子上的接触器枢转并滑动，使公共端子的任一侧上的接触端子滑动接合。 使用独立的接触器形式，用于保持ON-OFF-ON和瞬时ON-ON型电路换向。
-
3.发明授权Snap-action electric switch with fulcrum means for limited contact sliding and positive-off torque 失效具有支点的快动式电动开关用于有限的接触滑动和正向转矩
公开(公告)号：US4121069A
公开(公告)日：1978-10-17
申请号：US715898
申请日：1976-08-19
申请人： Eric L. Long
发明人： Eric L. Long
CPC分类号： H01H23/20 , H01H15/18 , H01H19/635 , H01H5/045
摘要： An electric snap-action switch is disclosed having a movable contactor with oppositely inclined camming surfaces meeting at an apex on the top thereof. The contactor is centrally biased upwardly from below and cammed downwardly from above by a laterally movable operator traversing the inclined camming surfaces such that the contactor snaps laterally against vertical stationary contacts as the apex is crossed by the operator. The invention includes fulcrum means effective to stop the downward movement of the contactor before the operator crosses the apex whereby a moment arm is formed from a fulcrum to the point of operator-contactor engagement such that further movement of the operator towards the apex effectuates a torque on the contactor to pivot the contactor about the fulcrum to positively break any welds or other frictional attachments between the contacts without relying on the stored energy of the carrier biasing means, thereby affording a switch having little possibility of failure in an "on" position. The inclined camming surfaces of the contactor may be formed with compound slopes to assure constant operator pressure prior to trip point as the contactor pivots and increases the angle of inclination of the camming surface traversed by the operator. Specific embodiments of a double-pole single-throw trigger switch and a double-pole double-throw toggle lever switch are disclosed.
摘要翻译： 公开了一种电动快动开关，其具有可移动的接触器，该活动接触器具有相对倾斜的凸轮表面，其在其顶部的顶点相交。 接触器从下方向上偏心向上并由横向移动的操作者从上方向下倾斜，横向移动的操作者横过倾斜的凸轮表面，使得当顶点与操作者交叉时，接触器横向抵靠垂直的固定触点。 本发明包括有利于在操作者穿过顶点之前停止接触器的向下运动的支点装置，由此将力臂从支点形成为操作者 - 接触器接合点，使得操作者朝向顶点的进一步移动产生扭矩 在接触器上使接触器围绕支点枢转，从而在不依赖于载体偏置装置的存储能量的情况下肯定地破坏接触件之间的任何焊缝或其它摩擦附件，从而提供在“接通”位置上几乎没有故障的可能性的开关。 接触器的倾斜凸轮表面可以形成有复合斜率，以在接触器枢转并且增加由操作者穿过的凸轮表面的倾斜角度时，在跳闸点之前保持恒定的操作者压力。 公开了双极单掷触发开关和双极双掷肘杆开关的具体实施例。
-
公开(公告)号：US4115673A
公开(公告)日：1978-09-19
申请号：US769439
申请日：1977-02-16
申请人： Franklin E. Smith
发明人： Franklin E. Smith
CPC分类号： H01H23/025
摘要： In the exemplary embodiment, an attachment is mounted to the switch housing and supports stationary supply terminals which extend through the switch housing to make sliding and wiping contact externally of the housing with the terminals of an indicator lamp carried by the switch operator when the latter is moved to a designated position.
摘要翻译： 在示例性实施例中，附件安装在开关壳体上并且支撑静止的供电端子，该固定的供电端子延伸穿过开关壳体，以便在开关操作器承载的指示灯的端子与外壳之间进行滑动和擦拭接触， 移动到指定的位置。
-
公开(公告)号：US4110585A
公开(公告)日：1978-08-29
申请号：US789546
申请日：1977-04-21
申请人： Harry W. Brown
发明人： Harry W. Brown
摘要： EMI (electromagnetic interference) is prevented by grounding the switch operator. This is done by placing an electrically conductive spring brush within the switch housing to connect the toggle lever to the metal frame of the switch. Since the metal frame is connected through its mounting panel to ground, the toggle lever becomes grounded to prevent EMI.
摘要翻译： 通过将开关操作器接地来防止EMI（电磁干扰）。 这通过将导电弹簧刷放置在开关壳体内来实现，以将肘杆连接到开关的金属框架。 由于金属框架通过其安装面板连接到地面，所以肘节杆接地以防止EMI。
-
6.发明授权
公开(公告)号：US4101749A
公开(公告)日：1978-07-18
申请号：US750969
申请日：1976-12-15
CPC分类号： H01H23/025
摘要： An improved method and means for making electrical connections for an internal indicating lamp within a small switch. The conducting leads of the lamp and/or a voltage dropping resistor are connected to and held in good electrical engagement with stationary terminals of the switch as an incident to the terminals being seated in place of the switch housing and secured thereto thereby eliminating the need for special connectors or soldering or welding of the leads to the terminals.
摘要翻译： 用于在小型开关内进行内部指示灯的电连接的改进方法和装置。 灯和/或降压电阻器的导电引线连接到开关的固定端子并与之保持良好的电接触，因为入口到端子被置于代替开关壳体并固定到端子上，从而不需要 特殊连接器或引线到端子的焊接或焊接。
-
公开(公告)号：US4096465A
公开(公告)日：1978-06-20
申请号：US760174
申请日：1977-01-17
申请人： Paul Chalfont Fryer
发明人： Paul Chalfont Fryer
CPC分类号： H01H83/223
摘要： An overload switching relay for a multi-phase electricity supply responds to the value of the currents in the individual phases and actuates a contact-breaking switch in the event of either (i) the mean value of the currents on all phases exceeding a first threshold, and (ii) any differential arising, above a second threshold, between the currents of any two phases: means are provided to increase the threshold to differential actuation as the mean value of the entire plurality of currents increases.
摘要翻译： 用于多相电力供应的过载开关继电器响应于各相中的电流值，并在以下情况下致动断路开关：（i）所有相上的电流的平均值超过第一阈值 ，以及（ii）在任何两个相的电流之间产生高于第二阈值的任何差异：提供装置以随着整个多个电流的平均值增加而增大到差分致动的阈值。
-
公开(公告)号：US4093850A
公开(公告)日：1978-06-06
申请号：US771169
申请日：1977-02-22
CPC分类号： G01R23/02
摘要： A fast response digital ratemeter is disclosed which calculates the reciprocal of every period between consecutive event pulses. A period counter is continuously incremented by clock pulses of a known frequency and measures the interval between event pulses by accumulating the clock pulses. Each event pulse both marks the end of the previous period and the beginning of the new period by latching the accumulated incremented counts of the period counter into a memory and resetting the period counter to immediately begin re-accumulating clock pulses occurring in the new period. The memory applies the accumulated counts as a divisor to divider means which divides the divisor into a known constant by repetitively subtracting the divisor from the constant. Since the divisor is retained by the memory, incrementation to the value of the divisor is necessary only once (during measurement of the period by the period counter), not before each subtraction, thus minimizing calculation time. Display counter means count the number of subtractions performed and display this as the rate of recurrence of input events in units determined by the constant. Decimal point shifting (including underflow and overflow detection), period averaging, overrun detection, and synchronization of event and clock pulses are also disclosed.
摘要翻译： 公开了一种快速响应数字速率计，其计算连续事件脉冲之间的每个周期的倒数。 周期计数器通过已知频率的时钟脉冲连续增加，并通过累加时钟脉冲来测量事件脉冲之间的间隔。 每个事件脉冲都通过将周期计数器的累积递增计数锁存到存储器中并重新设置周期计数器来标记新周期的结束和新周期的开始，以立即开始重新累积新周期中出现的时钟脉冲。 存储器将累积计数作为除数分配给除数器，该除法器通过从常数重复地减去除数来将除数分成已知常数。 由于除数由存储器保留，所以除数除数的值只需要一次（在周期计数器的测量期间），而不是在每次减法之前，因此最小化计算时间。 显示计数器表示计算执行的减法数，并将其显示为以常数确定的单位为单位的输入事件复发率。 还公开了小数点移位（包括下溢和溢出检测），周期平均，超限检测和事件和时钟脉冲的同步。
-
公开(公告)号：US4079267A
公开(公告)日：1978-03-14
申请号：US694915
申请日：1976-06-10
IPC分类号： H01H47/18 , H03K17/292 , H01H7/00
CPC分类号： H01H47/18 , H03K17/292 , Y10T307/951
摘要： An on-delay timer of the solid state type incorporating integrated circuit (IC) modules including a five-transistor array in a dual-in-line package (DIP), a multiple-transistor monolithic triggering comparator circuit used as a timer, and a bidirectional thyristor or Triac. All voltages are referenced to one power line to afford simplicity of circuitry wherein the load current does not flow through the pilot switch. A leaky switch detector circuit using a simple voltage divider is incorporated in the pilot switch circuit.
摘要翻译： 包括集成电路（IC）模块的固态的接通延迟定时器，其包括双列直插封装（DIP）中的五晶体管阵列，用作定时器的多晶体管单片触发比较器电路，以及 双向可控硅或Triac。 所有电压参考一条电源线，以提供简单的电路，其中负载电流不流过导频开关。 使用简单分压器的泄漏开关检测器电路并入导频开关电路中。
-
公开(公告)号：US4038619A
公开(公告)日：1977-07-26
申请号：US618579
申请日：1975-10-01
CPC分类号： H01H50/68
摘要： A pneumatic timer translating the external force of an electromagnetic relay or the like into rotational movement of a camshaft to actuate a set of switch contacts. The rotation of the camshaft is retarded in one direction by an adjustable pneumatic one-way time delay mechanism. The timer is capable of two modes of operation, on delay and off delay, according to choice of camshaft configuration and orientation.
-
-
-
-
-
-
-
-
-
搜索结果
1668 条记录 (耗时 0.027 秒)