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11.发明授权
公开(公告)号：US5519561A
公开(公告)日：1996-05-21
申请号：US336391
申请日：1994-11-08
IPC分类号： G01R19/165 , H01H73/48 , H02H1/00 , H02H3/08 , H02H5/04
CPC分类号： H02H1/0015
摘要： In a circuit breaker having a thermal-magnetic trip, the voltage across the bimetal is used to sense load currents. This voltage signal representative of current through the bimetal can be used as an input to an arcing fault detector. The signal is converted to a bandwidth limited di/dt signal. If the magnitude of the di/dt signal exceeds a threshold indicative of the onset of an arc a predetermined number of times within a given interval, the circuit breaker is tripped. The voltage across the bimetal can also be used in other devices requiring a measure of load current such as, for example, a meter or an overcurrent alarm.
摘要翻译： 在具有热磁跳闸的断路器中，双金属片两端的电压用于感测负载电流。 表示通过双金属电流的电压信号可以用作电弧故障检测器的输入。 该信号被转换为带宽限制的di / dt信号。 如果di / dt信号的大小超过给定间隔内指示电弧开始预定次数的阈值，则断路器跳闸。 双金属片上的电压也可用于需要测量负载电流的其他器件，例如仪表或过流警报。
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公开(公告)号：US5008645A
公开(公告)日：1991-04-16
申请号：US559861
申请日：1990-07-30
申请人： Stephen A. Mrenna
发明人： Stephen A. Mrenna
CPC分类号： H01H71/06 , H01H71/7436 , H01H2011/0075 , H01H2071/7472
摘要： A circuit breaker with a thermal trip has a calibration opening in the electrically insulating housing through which a tool may be inserted and rotated to distort a support plate on which a bimetal is mounted to calibrate the thermal trip after the circuit breaker has been fully assembled and enclosed within the insulating housing. A tamper indicating seal in the form of a destructible film secured over the calibration opening by an adhesive having an adhesive strength exceeding the tensile strength of the destructible film provides a visual indication of any subsequent attempts to tamper with the calibration setting.
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公开(公告)号：US4725799A
公开(公告)日：1988-02-16
申请号：US913879
申请日：1986-09-30
CPC分类号： H01H89/08 , H01H2071/665 , H01H71/526
摘要： A circuit breaker for use in remote load energy management systems and characterized by an insulating housing including opposite side walls, end walls and edge walls with a circuit breaker structure contained therein; a manual operator including a handle extending through an edge wall for actuating the structure between open and closed circuit conditions; an electromagnetic within the housing and including an armature for opening the circuit which armature is movable in an axis substantially perpendicular to the edge walls.
摘要翻译： 一种用于远程负载能量管理系统的断路器，其特征在于绝缘壳体，其包括相对的侧壁，端壁和边缘壁，其中包含断路器结构; 手动操作器，其包括延伸穿过边缘壁的手柄，用于在打开和闭合状态之间致动结构; 壳体内的电磁，并且包括用于打开电路的电枢，该电枢可在基本上垂直于边缘壁的轴线上移动。
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公开(公告)号：US4620076A
公开(公告)日：1986-10-28
申请号：US716305
申请日：1985-03-27
申请人： Stephen A. Mrenna , Gale C. Vosler
发明人： Stephen A. Mrenna , Gale C. Vosler
CPC分类号： H01H9/0264 , H01H9/342
摘要： A circuit breaker apparatus characterized by a molded case forming a plurality of intercommunicating compartments with a circuit breaker structure within a compartment, arc-quenching means in an adjacent compartment, a line terminal in a next adjacent compartment and electrically insulating shield means between the line terminal and the arc-quenching compartment.
摘要翻译： 一种断路器装置，其特征在于，模制箱形成多个相互连通的隔室，隔室内具有断路器结构，相邻隔室中的灭弧装置，下一相邻隔室中的线路端子和线路端子之间的电绝缘屏蔽装置 和灭弧室。
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公开(公告)号：USRE30862E
公开(公告)日：1982-02-09
申请号：US914464
申请日：1978-06-12
申请人： Stephen A. Mrenna , Zelko J. Kruzic
发明人： Stephen A. Mrenna , Zelko J. Kruzic
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.
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公开(公告)号：US3950714A
公开(公告)日：1976-04-13
申请号：US507165
申请日：1974-09-18
申请人： Stephen A. Mrenna , Alfred E. Maier
发明人： Stephen A. Mrenna , Alfred E. Maier
CPC分类号： H01H71/505 , H01H71/40
摘要： A molded case circuit breaker is described including a U-shaped thermal and magnetic trip assembly pivotally supported by an insulating housing. A compression spring biases the trip assembly against a releasable cradle which is engaged by a latch. The biasing action of the spring against the pivoting trip assembly maintains a constant latch bite despite warping or other mechanical distortion of the insulating housing.
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公开(公告)号：US5546060A
公开(公告)日：1996-08-13
申请号：US362402
申请日：1994-12-22
申请人： Stephen A. Mrenna
发明人： Stephen A. Mrenna
CPC分类号： H01H71/0214 , H01H69/01 , H01H2011/0075 , H01H2071/7472 , H01H71/7436
摘要： A support plate for a circuit breaker has a longitudinal slot centrally located in the support plate, a free end with a tab for affixing an elongated bimetal of a trip assembly, a longitudinal edge opposite to the free end and terminating in proximity to a latch ledge of a cradle of an operating mechanism, opposed lobes each having a transverse edge, and an opening in each of the transverse edges. The support plate extends partially along a planar wall of a base of a housing for the circuit breaker. Molded pins in the base of the housing of the circuit breaker enter the openings in the transverse edges of the support plate for securing the support plate to the base. These molded pins extend outwardly to space the support plate away from the cradle of the operating mechanism. Bent over tabs are provided in one of the lobes for abutting a cover of the circuit breaker to maintain the fixed position of the support plate in the housing base.
摘要翻译： 用于断路器的支撑板具有位于支撑板中心的纵向狭槽，具有用于固定跳闸组件的细长双金属片的突出部的自由端，与自由端相对的纵向边缘并且终止于闩锁突出部 的操作机构的支架，每个具有横向边缘的相对的叶片和每个横向边缘中的开口。 支撑板部分地沿着用于断路器的壳体的基座的平坦壁延伸。 断路器壳体底部的模制销钉进入支撑板的横向边缘的开口，用于将支撑板固定在基座上。 这些模制销向外延伸以使支撑板远离操作机构的支架。 在突出部之间弯曲设置用于邻接断路器的盖子以保持支撑板在壳体基座中的固定位置。
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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：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：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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