| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Instant trip mechanism for molded case circuit breaker | US15379280 | 2016-12-14 | US09837234B2 | 2017-12-05 | Kihwan Oh |
| Disclosed embodiments include an instant trip mechanism for a molded case circuit breaker. In some embodiments, the mechanism includes an adjustment dial to set a current for an instant trip operation; an instant bar provided with an upper portion contactable with the adjustment dial, a shaft portion serving as a rotation shaft, and a lower extending portion downwardly extending from the shaft portion; an electromagnet unit to generate a magnetic attraction force that is proportional to an amount of current flowing on the circuit; an armature rotatable with a lower end portion supported by a shaft, and attracted toward the electromagnet unit by the magnetic attraction force; and a spring for applying to the armature a load varying in a direction of the armature getting away from the electromagnet unit. | ||||||
| 82 | Molded case circuit breaker | US14981670 | 2015-12-28 | US09754751B2 | 2017-09-05 | Kyunghwan Oh |
| Disclosed is a molded case circuit breaker including a case configured to accommodate an element for trip, an upper cover detachable attached to the case, a dial configured to include a fixing plate, which is provided to protrude along an outer circumference surface thereof, and a first stopper disposed under the fixing plate, a crossbar moved by the dial, a first dial fitting hole provided in the upper cover for the dial to be fitted into the first dial fitting hole, and a dial rotation adjusting unit provided in the first dial fitting hole and fitted between the fixing plate and the first stopper to guide a rotation of the dial, the dial rotation adjusting unit including a plurality of fitting grooves arranged at certain intervals. The first stopper is fitted into and fixed to the plurality of fitting grooves according to the rotation of the dial. | ||||||
| 83 | Methods And Apparatus For Calibrating A Thermomagnetic Trip Unit Of A Circuit Breaker | US14370992 | 2012-03-05 | US20150077200A1 | 2015-03-19 | Esteban Sandoval Camacho; Stephen Scott Thomas |
| Methods, apparatus, and systems are provided for calibrating a thermomagnetic trip unit in a circuit breaker base assembly. The invention provides a calibration nut, an extended armature guide pin having a threaded portion, a spring disposed on the calibration nut and coiled around the extended armature guide pin, and an armature disposed on the spring and adapted to be held by an electromagnet. The calibration nut is threaded on the threaded portion of the extended armature guide pin and adapted to translate up or down depending on rotation of the extended armature guide pin to compress or decompress the spring against the armature. The extended armature guide pin includes a slotted end that is accessible when the apparatus is installed in the circuit breaker base assembly. The calibration nut is also accessible when the apparatus is installed in the circuit breaker base assembly. Numerous additional aspects are disclosed. | ||||||
| 84 | TRIP UNIT | US13497901 | 2010-09-24 | US20130049904A1 | 2013-02-28 | Aloysius Hemmer; Ronaldus Niehoff; Stefan Van Vlijmen |
| A trip unit includes an actuator and a cylindrical housing container the actuator. The actuator includes a cylindrical pin; a cylindrical closed chamber; a biasing member; a permanent magnet; a coil housing; and a coil supported by the coil housing. The pin is axially movably disposed in the chamber and extends out of the chamber through a sealed opening. The biasing member may comprise a spring, such as a helical spring, and may be configured to bias the pin for an axial movement in a direction out of the chamber. The permanent magnet may at least partly surround the pin during a latched condition of the trip unit. The coil housing may at least partly define the cylindrical closed chamber. In embodiments, an annular gap is provided between the pin and the permanent magnet. Methods associated with the manufacturing trip units are also disclosed. | ||||||
| 85 | Magnetic trip mechanism and electrical switching apparatus employing the same | US12130170 | 2008-05-30 | US07800466B2 | 2010-09-21 | Craig J. Puhalla; Kelly J. McCarthy; Brian J. Schaltenbrand; Keith E. Thomas |
| A magnetic trip mechanism is provided for an electrical switching apparatus. The magnetic trip mechanism includes a magnetic member, an armature having opposing first and second ends and first and second sides, an armature restraint and a biasing element. The armature moves among first and second positions corresponding to separable contacts of the electrical switching apparatus being tripped open and closeable, respectively. The armature restraint includes first and second portions. In the first position, the first side of the armature engages the magnetic member. In the second position, the second side of the armature engages the second portion of the armature restraint. The armature restraint and the biasing element comprise a sub-assembly, which is removably coupled to the magnetic member. After being removably coupled to the magnetic member, the biasing element is chargeable to bias the armature away from the first position toward the second position. | ||||||
| 86 | DIVIDED ADJUSTABLE ARMATURE FOR A CIRCUIT BREAKER | US12701305 | 2010-02-05 | US20100188176A1 | 2010-07-29 | SALAHEDDINE FAIK; DENNIS W. FLEEGE |
| A divided armature for the trip mechanism of a circuit breaker especially useful for low trip current breakers allows for two independent adjustments: first of the magnetic air gap between the yoke and the armature and second of the clearance between the trip bar and the back plate of the armature. The divided armature allows the force of a return spring of the trip mechanism to be unchanged while adjusting the magnetic air gap to set the trip current point. | ||||||
| 87 | Electromagnetic relay for low-voltage circuit breaker | US10496838 | 2002-12-16 | US20050007220A1 | 2005-01-13 | Lucio Azzola; Stefano Besana |
| An electromagnetic relay with adjustable tripping threshold for a low-voltage circuit breaker, comprising a magnetic circuit that has a fixed part, which comprises a fixed element made of ferromagnetic material, a core, and at least one winding coil, and a moving part, which has a moving plate made of ferromagnetic material and arranged so as to face at least partially the fixed element with the coil interposed between the moving plate and the fixed element, the moving plate being functionally connected to means for adjusting the tripping threshold; its particularity consisting of the fact that the moving plate and/or the fixed element have a contoured body that allows, by acting on the adjustment means, to set the tripping threshold by simultaneously varying the gap between the moving plate and the fixed element and the magnetic coupling between the moving plate and the core. | ||||||
| 88 | Adjustable magnetic trip unit and a circuit breaker incorporating the same | US10771671 | 2004-02-03 | US06788174B1 | 2004-09-07 | Farhad Afshari; Arthur D. Carothers |
| The magnetic trip device of a circuit breaker has a magnetic pole in which a magnetic field is generated by load current, and an armature assembly that includes: a bracket supported for pivotal movement relative to the magnetic pole; a spring biasing the bracket to a position spaced from the magnetic pole; an armature hinged on the bracket; and an adjusting screw for adjusting a gap between the armature and the magnetic pole for calibrating the trip device without affecting the spring bias, which can be separately and independently adjusted to select the load current at which the magnetic trip is initiated. | ||||||
| 89 | Circuit breaker and plunger assembly support structure including a positioning member | US10213549 | 2002-08-06 | US06768404B2 | 2004-07-27 | Ramon J. Ojeda; Yu Wei Chou |
| A circuit breaker includes a housing, separable contacts disposed in the housing, a latchable operating mechanism structured to separate the separable contacts, and a magnetic trip mechanism coupled to the latchable operating mechanism. The magnetic trip mechanism includes a plunger assembly support structure and a plunger assembly having a moveable core. The plunger assembly support structure includes a wall having a slot therein. The moveable core rests in the slot. A positioning member has a hook and an opening. The hook engages the wall of the plunger assembly support structure. The moveable core passes through the opening of the positioning member, which retains the moveable core relative to the plunger assembly support structure. | ||||||
| 90 | Magnetic device for a magnetic trip unit | US10063457 | 2002-04-24 | US20030201857A1 | 2003-10-30 | Thomas Gary O'Keeffe; Christian Daehler; Shridhar Champaknath Nath; Anitha Bochala |
| A magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit includes: a flux return component in electromagnetic communication with an electrically conductive strap; a tube disposed within the flux return component; a stator disposed at a first end of the tube and connected to the flux return component, the stator having a stator surface at one end; and a plunger slidably extending from a second end of the tube, the plunger comprises a plunger surface at one end facing the stator surface, the plunger further includes another end adapted to operably interact with the latching mechanism, the plunger is biased to a predetermined gap position. | ||||||
| 91 | Circuit interrupter with a magnetically-induced automatic trip assembly having improved armature pivoting | US09665423 | 2000-09-20 | US06633211B1 | 2003-10-14 | Mark O. Zindler; Roger William Helms |
| A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. A trip mechanism is disposed in the housing and has an automatic trip assembly that generates a tripping operation. The automatic trip assembly includes an armature and a magnetic yoke having pivot supports. The armature includes a head portion having a first hook-like member and an oppositely facing second hook-like member. The first hook-like member has a first recess, and the second hook-like member has a second recess. The automatic trip assembly includes a pivot pin positioned on the pivot supports and extending through the first recess and the second recess to provide a rotatable disposition of the armature. The assembly also includes a biasing member applying a force to the armature in a direction to normally rotationally displace a bottom portion of the armature away from the magnetic yoke. | ||||||
| 92 | Adjustable trip solenoid | US09515112 | 2000-02-29 | US06404314B1 | 2002-06-11 | David Arnold; Thomas G. O'Keeffe; Paul Douglas Lafferty |
| An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator. The first position is closer to the plunger than the second position, and the stator is in a facially spaced relationship with respect to the plunger and the stator has a second threaded portion for engaging a threaded portion of the support, the second threaded portion of the stator causes the support to travel between a first position and a second position, the second position of the support provides the mechanical biasing mechanism with a greater biasing force than the first position. | ||||||
| 93 | Adjustable armature assembly for a circuit breaker and method of using same | US09752812 | 2000-12-29 | US06396373B1 | 2002-05-28 | Holly S. Gerdes; William J. Broghammer |
| The present invention provides an armature assembly for adjusting the magnetic calibration of a tripping mechanism in a circuit breaker includes a bracket having a channel defined by a pair of legs and a bight with opposing sides. A first tab and a second tab are fixedly connected to opposing sides of the bight. The first and second tabs are positioned parallel to one another and perpendicular to the opposing sides of the bight. The first and second tabs have a respective first and second hole that are threaded. A first pin rotatably connects to the tripping mechanism within the interior of the circuit breaker. The first pin is affixed across the legs of the channel. An adjustment screw has an elongated body with a top portion on one end and at the opposing end a bottom portion. The adjustment screw has a plurality of screw threads defining an exterior side wall of the elongated body along the bottom portion. The plurality of screw threads configured to releasably engage the threaded fastener component. A washer has an approximate donut shape defined by relatively flat opposing surfaces. The washer is rotatably affixed though its center to the adjustment screw. A spring has one end attached to the washer and a second end attached to the interior of the circuit breaker to provide a bias with a force adjustable as the washer is moved by rotating the adjustment screw. | ||||||
| 94 | Support and alignment structure for magnetic trip device | US09525781 | 2000-03-15 | US06366187B1 | 2002-04-02 | Richard Paul Malingowski; Robert Michael Slepian; Teresa Inez Hood; Lance Gula; Trent Allen Chontas; Mark O. Zindler; Joseph Humbert |
| A plunger assembly support structure for a molded case circuit breaker magnetic trip mechanism for aligning a trip mechanism plunger assembly. The plunger assembly support structure includes a base member assembly having a plurality of guide members, and a plunger carriage assembly slidably disposed adjacent to said base member assembly. | ||||||
| 95 | Circuit breaker with adjustable magnetic trip unit | US09494853 | 2000-02-01 | US06218920B1 | 2001-04-17 | Matthias Reichard; Walter Felden |
| An adjustable magnetic trip unit for a circuit breaker (1) is equipped with a magnet yoke (16), an armature element (18) that works therewith to actuate a trip shaft (14), and an adjusting bar (23) that can be tilted about the axis (15) of the trip shaft (14) for adjusting the distance (L) between the magnet yoke (16) and the armature element (18). This magnetic trip unit can be used in a circuit breaker (1) having a plurality of breaker cassettes (30) arranged adjacent to one another wherein the adjusting bar (23) extends parallel to the axis (15) of the tripping shaft (14) and on which are arranged a plurality of adjusting arms (24) corresponding to the number of breaker cassettes (30). | ||||||
| 96 | Current limiting circuit breaker | US95178 | 1998-06-10 | US6008459A | 1999-12-28 | Timothy R. Faber; Marsha F. Jennerjohn; Todd M. Munyon |
| A molded plastic current limiting circuit breaker includes an interrupter assembly that includes an over-molded magnet, arc stack, baffle stack, and a chamber liner in which a trip unit is described. | ||||||
| 97 | Circuit breaker with welded contact interlock, gas sealing cam rider and double rate spring | US020515 | 1998-02-09 | US5927484A | 1999-07-27 | Richard P. Malingowski; Todd M. Lathrop; Robert M. Slepian; Jere L. McKee; Lance Gula; Thomas A. Whitaker |
| A circuit breaker includes a housing, an operating mechanism and separable main contacts, and a rotatable crossbar which rotates to open and close the contacts. The crossbar interacts by way of a protrusion thereon with a rotatable, positive off-link. A handle mechanism is disposed in the housing and has a handle protruding from the housing which is normally movable from a closed to open disposition. However, if the operating mechanism has reacted in such a way as to open the separable main contacts but, in fact, they have not opened because, for example, they are welded shut, the protrusion on the crossbar will interact with the positive off-link and prevent the handle mechanism from moving to the opened position thus warning personnel that the contacts have not opened. There is also provided in association with the crossbar a cam which is spring loaded from the bottom against a portion of a cavity in a crossbar which interacts with a movable portion of the movable contact in such a manner as to latch it open when it has independently moved to an opened position relative to the rotatable crossbar. The cam rider reacts in such a way that it seals off or protects the aforementioned spring from gaseous arc products during the opening operation. There is provided on the trip mechanism a double pitch spring. The double pitch being such as to expand the range of the adjustment characteristic of the tripping mechanism. | ||||||
| 98 | Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means | US74098 | 1998-05-07 | US5886605A | 1999-03-23 | Phillip L. Ulerich; John A. Wafer |
| An actuator assembly for an electrical power switch apparatus, the actuator assembly having a housing and a plunger positioned within the housing where the plunger is movable between a set position and an actuated position. The plunger includes a compression spring to provide a pre-load thereto that biases the plunger away from the set position and toward the actuated position. A magnet contained in the housing and positioned proximate to the plunger establishes a magnetic force which overcomes the pre-load of the compression spring and maintains the plunger in a set position. A coil assembly, that when energized, produces an electromagnetic force which bucks the magnetic force established by the magnet allowing the plunger to be propelled by the compression spring to the actuated position. A screw extends through an opening in the plunger for engagement with the compression spring so that rotation of the screw results in the adjustment or calibration of the pre-load of the compression spring. | ||||||
| 99 | Variable thermal and magnetic structure for a circuitbreaker trip unit | US988060 | 1997-12-10 | US5872495A | 1999-02-16 | Bernard DiMarco; James E. Ferree; Robert E. Black |
| A thermal and magnetic trip unit for a multi-pole circuit breaker includes a thermal structure having a bimetallic element and one or more heater elements. Each of the heater elements and a portion of the bimetallic element is generally "U" shaped defining a conductive path which extends from one leg of the U to the other leg. The heater elements and bimetallic element may be configured in parallel to reduce the level of current flowing through the bimetallic element and thus increase the current level at which the bimetallic element will trip the breaker. Alternatively, the heater elements may be configured in series with the bimetallic element, by inserting electrical insulators between the bimetallic element and each of the heater elements and connecting the various "U" shaped elements using a connecting bus which connects the second leg of one element to the first leg of the next element. In this configuration, the thermal structure defines a coil having one turns for each heater element and the bimetallic element. This coil may be used to implement a magnetic trip structure by inserting one or two magnetically permeable yokes, each yoke surrounding one leg of the combined thermal structure. An armature is positioned to be separated from the yoke by a gap such that, when the armature is pulled toward the yoke, it will engage the trip unit. In addition, the trip unit includes a calibration and adjustment bar that allows the gap to be adjusted as well as the force exerted on the armature by a biasing spring. The calibration and adjustment bar also allows each pole of the circuit breaker to be independently calibrated. | ||||||
| 100 | Current limiting circuit breaker | US758988 | 1996-12-02 | US5718328A | 1998-02-17 | Timothy Robert Faber; Tak Man Wong |
| A molded plastic current limiting circuit breaker includes an interrupter assembly that includes an over-molded magnet, arc stack, baffle stack, and a chamber liner in which a trip unit is described. | ||||||
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