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公开(公告)号：US4933653A
公开(公告)日：1990-06-12
申请号：US412240
申请日：1989-09-25
CPC分类号： H01H71/34 , H01H71/405
摘要： A circuit breaker having a trip mechanism comprising a primary armature which is attracted toward a bimetal by magnetic flux produced by a predetermined overcurrent flowing through the bimetal to unlatch an operating mechanism and open electrical contacts, includes a pivoted supplemental armature which is also attracted toward the bimetal by the overcurrent and which bears against and urges the primary armature toward the bimetal to thereby reduce the predetermined overcurrent at which the breaker opens the electrical contacts. The supplemental armature comprises a flat strip of magnetically permeable material which is bent at one end to form a hook which merely drops into a recess in the breaker housing. Integral flanges on the strip form a magnetic yoke which concentrates the magnetic flux to increase the sensitivity of the magnetic trip function.
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公开(公告)号：US5279487A
公开(公告)日：1994-01-18
申请号：US853567
申请日：1992-03-18
摘要： A bolt-on, duplex circuit breaker having an external, integrally formed key member designed with a truncated pyramidal shape. The pyramidal shape is used to discourage tampering aimed at its removal. A panelboard into which bolt-on, duplex circuit breakers are mounted having mounting rails onto which the circuit breakers are disposed. The mounting rails have cooperating, key member accepting notches that act in conjunction with the key member integrally formed upon the circuit breaker for limiting the number of bolt-on, duplex circuit breakers that are insertable within the panelboard.
摘要翻译： 一种螺栓式双工断路器，具有设计成截锥形的外部整体形成的键构件。 金字塔形状用于阻止旨在清除其的篡改。 一个安装有螺栓式双工断路器的电路板，其上安装有断路器。 安装导轨具有配合的键构件，其接合凹口，其与整体地形成在断路器上的键构件结合起来，以限制可插入到面板内的螺栓连接双工断路器的数量。
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公开(公告)号：US4725800A
公开(公告)日：1988-02-16
申请号：US3531
申请日：1987-01-15
CPC分类号： H01H71/2454 , H01H2071/7481 , H01H71/164 , H01H71/2472
摘要： A circuit breaker structure having a faster trip unit characterized by a circuit breaker operator and a trip unit comprising a coil, a core, and an armature, and a hold-back bracket extending from and retaining the armature in a spaced position from the core so as to cause the magnetic field lines to flow through the bracket and the armature.
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公开(公告)号：US5193043A
公开(公告)日：1993-03-09
申请号：US543985
申请日：1990-06-26
申请人： Kurt A. Grunert , Robert J. Tedesco , John A. Wafer , Henry A. Wehrli, III , Lawrence M. Hapeman , Stephen A. Mrenna
发明人： Kurt A. Grunert , Robert J. Tedesco , John A. Wafer , Henry A. Wehrli, III , Lawrence M. Hapeman , Stephen A. Mrenna
IPC分类号： H01H83/22
CPC分类号： H01H83/223
摘要： A multipole circuit breaker, for example, a three pole circuit breaker, can detect a condition when less than all of the phases are open circuited to trip the circuit breaker. This reduces the tripping time and hence risk of damage to the electrical load. The circuit breaker includes a thermal trip unit and a phase sensitivity assembly that is interlocked with the bimetals included with the thermal unit. The phase sensitivity assembly includes one or more levers, responsive to the deflection of a bimetal corresponding to the open circuited phase resulting from cooling action of a bimetal relative to the other bimetals. The relative displacement of the cooling bimetal is used to either trip or reduce the tripping time of the circuit breaker.
摘要翻译： 多极断路器（例如三极断路器）可以检测到当小于全部相位断开以使断路器跳闸时的状态。 这样可以减少跳闸时间，从而减少损坏电气负载的风险。 断路器包括一个热脱扣单元和一个与热单元附带的双金属互锁的相位灵敏度组件。 相位灵敏度组件包括一个或多个杆，其响应于由双金属片相对于其它双金属片的冷却作用产生的对应于开路相位的双金属片的偏转。 冷却双金属片的相对位移用于跳闸或减少断路器的跳闸时间。
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公开(公告)号：US4719438A
公开(公告)日：1988-01-12
申请号：US913877
申请日：1986-09-30
IPC分类号： H01H3/28 , H01H71/16 , H01H71/24 , H01H71/74 , H01H75/10 , H01H77/04 , H01H81/00 , H01H83/00
CPC分类号： H01H71/2454 , H01H2071/7481 , H01H71/164 , H01H71/2436 , H01H71/2472 , H01H71/74
摘要： A circuit breaker structure having a faster trip unit characterized by a circuit breaker operator and a trip unit comprising a coil, a core, and an armature, a flux concentrating plate spaced from and on the side of the armature opposite the core and for concentrating the magnetic field between the core and the armature, and a hold-back bracket having extending from and retaining the armature in a spaced position from the core so as to cause the magnetic field lines to flow through the bracket and the armature.
摘要翻译： 一种具有更快跳闸单元的断路器结构，其特征在于断路器操作器和包括线圈，芯和电枢的跳闸单元，与电枢相对的铁心间隔开并在侧面上的磁通集中板，用于集中 磁芯和电枢之间的磁场以及具有从电枢间隔开的位置延伸并保持电枢的保持架，以使磁场线流过支架和电枢。
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公开(公告)号：US5805038A
公开(公告)日：1998-09-08
申请号：US841731
申请日：1997-04-29
CPC分类号： H01H71/504
摘要： A circuit breaker has a shock absorber to prevent nuisance tripping which results from shock generated during ON to OFF operation of the circuit breaker. The shock is primarily caused by a snap action which occurs within the operating mechanism of the circuit breaker when the handle is moved from the ON to OFF position. The snap action results from the circuit breaker employing, as part of the operating mechanism, a toggle mechanism within an over center tension spring as a means for imparting motion in the operating mechanism. By strategically positioning the shock absorber for engagement with the operating mechanism when the circuit breaker is in the OFF position, the shock may be effectively absorbed thereby preventing the undesirable nuisance tripping.
摘要翻译： 断路器具有减震器，以防止在断路器的接通到断开操作期间产生的冲击产生的妨碍跳闸。 冲击主要是由于当手柄从开启位置移动到断开位置时发生在断路器的操作机构内的卡扣动作引起的。 作为作为操作机构的一部分的断路器，由于断路器的作用是在过中心拉伸弹簧内作为用于在操作机构中施加运动的手段而产生的快动作用。 当断路器处于OFF位置时，通过策略性地定位减震器与操作机构的接合，可以有效地吸收冲击，从而防止不期望的滋扰跳闸。
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公开(公告)号：US5436604A
公开(公告)日：1995-07-25
申请号：US257987
申请日：1994-06-10
CPC分类号： H01H71/025
摘要： A molded case for a miniature circuit breaker provides a base and a cover whose outer mating peripheral walls, which form and enclose a cavity for housing a circuit breaker mechanism, have approximately equal widths, except for the projected handle area. In this handle area, the width of the peripheral wall of the base is increased and contains an aperture for receiving the handle, and the width of the peripheral wall of the cover is decreased to receive the increased aperture area of the base. This arrangement provides for full handle support in the base for ease of assembly; high ribbing for maximum strength for short circuits; and a minimum overall thickness of about 0.500 inches.
摘要翻译： 用于微型断路器的模制壳体提供基座和盖，其外部配合的周壁形成和封闭用于容纳断路器机构的空腔，除了突出的手柄区域之外具有大致相等的宽度。 在该手柄区域中，底座的周壁的宽度增加并且包含用于接收手柄的孔，并且盖的周壁的宽度减小以接收基座的增加的开口面积。 这种布置在基座中提供了完整的手柄支撑，便于组装; 高肋最大强度为短路; 最小总厚度约为0.500英寸。
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8.发明授权Molded case circuit breaker apparatus having trip bar with flexible armature interconnection 失效具有跳闸杆的塑壳式断路器装置，具有柔性电枢互连
公开(公告)号：US4503408A
公开(公告)日：1985-03-05
申请号：US440681
申请日：1982-11-10
CPC分类号： H01H71/40
摘要： A molded case circuit breaker apparatus is taught with an operating mechanism which is triggered in response to the movement of a trip bar. The trip bar in turn is responsive to current flowing in the main terminals of the circuit breaker apparatus. The trip bar is responsive to electrothermal conditions as a gradual overload increases. It is also responsive to a short circuit condition due to a magnetic reaction between an armature and an electromagnet. The armature is flexibly attached to the trip bar for flexible movement in one direction and non-flexible movement in the other direction so that a short circuit may be accommodated by a relatively small air gap by non-flexible movement of the armature and the trip bar to cause a tripping operation. On the other hand, a wide range of angular movement is available for a high degree of calibrated reaction to a wide range of overload currents because the armature member is flexibly attached to the trip bar in one direction and is held stationary against the facing magnet even after the trip bar continues movement for an otherwise non-allowable increment of electrothermal calibration.
摘要翻译： 教导了一种模制外壳断路器装置，其具有响应于跳闸杆的移动而被触发的操作机构。 跳闸杆又响应于在断路器装置的主端子中流动的电流。 跳闸条响应于电热条件，逐渐过载增加。 它也由于电枢和电磁体之间的磁反应而对短路状况产生响应。 电枢被灵活地附接到跳闸杆，用于在一个方向上的柔性运动，而在另一个方向上是非柔性的运动，使得可以通过电枢和跳闸杆的非柔性运动由较小的气隙容纳短路 导致跳闸操作。 另一方面，宽范围的角运动可用于对宽范围的过载电流进行高度的校准反应，因为电枢构件在一个方向上柔性地附接到跳闸杆，并且保持静止抵靠面对的磁体，甚至 在跳闸条继续移动之后，否则不允许的电热校准增量。
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公开(公告)号：US4121077A
公开(公告)日：1978-10-17
申请号：US811227
申请日：1977-06-29
申请人： Stephen A. Mrenna , Glenn R. Thomas
发明人： Stephen A. Mrenna , Glenn R. Thomas
CPC分类号： H01H71/04
摘要： A circuit breaker including stationary contact means and a movable contact operable between open and closed positions with respect to the stationary contact means. A contact holder engages the movable contact, and means are utilized for effecting movement of the movable contact between the open and closed positions. Indicator means indicate the position of the movable contact with respect to the stationary contact, and may also function to reset an automatic tripping mechanism.
摘要翻译： 一种断路器，包括固定接触装置和可在相对于固定接触装置的打开和关闭位置之间操作的可动触头。 接触保持器与可动触头接合，并且用于使可动触头在打开位置和闭合位置之间移动的装置。 指示装置表示可动触点相对于固定触点的位置，并且还可以起作用以复位自动跳闸机构。
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公开(公告)号：US3984801A
公开(公告)日：1976-10-05
申请号：US617618
申请日：1975-09-29
申请人： Stephen A. Mrenna , Zelko J. Kruzic
发明人： Stephen A. Mrenna , Zelko J. Kruzic
CPC分类号： H01H85/24
摘要： A fuse clip for cartridge type fuses which permits the insertion of a proper fuse while preventing the insertion of improper fuses. The clip permits the insertion of fuses having an annular groove around one of the end terminals while prohibiting the insertion of fuses without such annular groove. A main body member has a pair of flexible clamping arms which receive the cartridge-type fuse, and the clamping arms have aligned slots therein. A rejection member comprised of a C-shaped configuration, with inward extensions formed on the legs of the C, is inserted into the main body member, with the inward extensions extending through the slots of the clamping arms. The inward extensions are spaced apart a distance greater than the diameter of the annular groove, but less than the diameter of the remainder of the end terminal. The rejection member prevents the insertion of fuses unless an annular groove on the end portion is positioned between the two inward extensions.
摘要翻译： 用于盒式保险丝的保险丝夹，允许插入适当的保险丝，同时防止插入不正确的保险丝。 夹子允许插入具有围绕一个端子端子的环形槽的熔断器，同时禁止插入没有这种环形槽的保险丝。 主体构件具有一对柔性夹持臂，其接收盒式熔断器，并且夹持臂在其中具有对准的狭槽。 由形成在C的腿上的向内延伸的C形构造的排斥构件插入主体构件中，其中向内延伸部延伸穿过夹紧臂的槽。 向内的延伸部分间隔开一个大于环形槽的直径的距离，但小于终端的其余部分的直径。 排阻构件防止插入保险丝，除非端部上的环形槽位于两个向内延伸部之间。
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