| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 335015000 | With contact biasing, holding or pressure control means | 21 |
| 20080211607 | Ground fault circuit interrupter device - A ground fault circuit interrupter device is described. | 09-04-2008 |
| 20090091407 | CONTACT ARM MECHANISM FOR CIRCUIT BREAKER - A mechanism for a circuit breaker contact arm that allows current limiting by reducing the opening time is disclosed. A contact arm is coupled to a contact arm mechanism that includes a carrier coupled to a first pair of linkages. A second pair of linkages is coupled to the first pair of linkages. A second carrier coupled to the second pair of linkages attaches to the contact arm mechanism to a main circuit breaker mechanism through a lay shaft assembly. Upon the occurrence of an undesired electrical condition, the contact arm mechanism moves from a locked to an open position allowing the contact arm to blow open. | 04-09-2009 |
| 20100073113 | Electromagnet Assembly Directly Driving Latch Of An Electronic Circuit Breaker - A circuit breaker includes a trip unit and an electronic fault detection unit sharing a common trip latch for causing the circuit breaker to trip upon detection of a fault by either unit. The circuit breaker has an electromagnet for causing the circuit breaker to trip upon detection of a fault by an electronic fault detection unit. The electromagnet is oriented in the housing proximal the trip latch without any components interposed between them, and directly attracts the latch. Advantageously the electromagnet orientation does not impact operation or the range of motion of the latch or other trip unit components. Advantageously the circuit breaker of the present invention does not increase the trip latch mass, its bulk swept volume through its range of motion or require additional linkage components that potentially might increase trip cycle time. In some embodiments the electromagnet core is reciprocable. | 03-25-2010 |
| 20110193660 | MOVABLE CONTACTOR ASSEMBLY FOR CURRENT LIMITING TYPE MOLDED CASE CIRCUIT BREAKER - A movable contactor assembly for a current limiting type MCCB comprising: a terminal base fixedly installed on a case; a plurality of movable contactors having a cam face portion; a pair of holder plates supporting the movable contactors at both sides thereof; a plurality of first springs providing an elastic force to the movable contactors; a plurality of extending plate portions provided to face the side of one end portion of each of the movable contactors; a plurality of flexible wire plates electrically connecting the movable contactors and the terminal base and having a portion bendable toward the movable contactors or toward the extending plate portions; and a second spring providing an elastic force to the flexible wire plates so as to be tightly attached to the movable contactor. | 08-11-2011 |
| 20120268223 | MAGNETIC ACTUATOR UNIT FOR A CIRCUIT-BREAKER ARRANGEMENT - A magnetic actuator unit is disclosed for a circuit-breaker arrangement, having an armature arranged to be movable between first and second, closed and opened end switching positions of the circuit-breaker, a single electrical coil for moving the armature to the second position due to electrical current feed, a permanent magnet for loading the armature in the direction of the second position, an outer ferromagnetic yoke at least partly surrounding the single electrical coil and the ferromagnetic core for directing magnetic flux to the armature, and an opening spring for permanent loading of the armature in the direction of the first position, which is coaxially arranged between the armature and the front side of the electrical coil. The opening spring can be at least partly accommodated inside an armature groove. | 10-25-2012 |
| 20130049904 | TRIP UNIT - 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. | 02-28-2013 |
| 20130106539 | FORCE AMPLIFICATION MODULE FOR AN ELECTRICAL SWITCHING DEVICE, UNIT COMPRISING FORCE AMPLIFICATION MODULE AND SHUNT RELEASE, AS WELL AS ELECTRICAL SWITCHING DEVICE | 05-02-2013 |
| 20130307647 | SWITCHGEAR AND SWITCHGEAR OPERATING MECHANISM - According to an embodiment, when a switchgear operating state is shifted from a close state to a cutoff state, a solenoid lever is pushed and rotated by a plunger of an electromagnetic solenoid for cutoff so that the solenoid lever rotates in a direction opposite from the direction of the urging of a solenoid-lever return spring. A trigger roller pin and the solenoid lever become disengaged from each other, an eccentric pin and a trigger lever are rotated by the urging force from a latch leading end become disengaged from each other, whereby a latch lever is rotated by the released energy of a cutoff spring. | 11-21-2013 |
| 20140139301 | AUXILIARY TRIP DEVICE FOR TRIPPING A CIRCUIT BREAKER - An auxiliary trip unit for a circuit breaker comprises:
| 05-22-2014 |
| 20150015348 | ELECTRICAL CONTACTOR - An electrical contactor has a pair of first terminals and a pair of second terminals. Each first terminal has a fixed member with at least one fixed electrical contact facing the other fixed member. The second terminals having back-to-back electrically-conductive movable arms with an electrically-insulating partitioning element there between. Each second terminal is associated with a different one of the first terminals, and has a movable electrical contact on the associated movable arm which faces the corresponding fixed contact. When the contacts close, contra-flowing current through the back-to-back movable arms produces a repulsive force between the movable arms increasing a force between the fixed and movable contacts. | 01-15-2015 |
| 20150015349 | ELECTRICAL CONTACTOR - An electrical contactor has a first terminal having an electrically-conductive fixed member with fixed contacts on opposite faces thereof, and a second terminal having a terminal body and an odd-number of electrically-conductive movable arms extending from the terminal body. Each movable arm has a movable contact thereon remote from the terminal body. The movable arms are arranged to oppose each other such that their movable contacts are on either side of the fixed member and aligned with the fixed contacts. The arrangement of the fixed member and the movable arms is such that, when the contacts close, current flowing through the movable arms produces a force which urges the movable arms towards each other thereby increasing a force between the fixed and movable contacts. The number of movable arms at each side of the fixed member is different. | 01-15-2015 |
| 20160163488 | CIRCUIT BREAKERS WITH MOVING CONTACT ARM WITH SPACED APART CONTACTS - Circuit breakers with moving contacts having a rocking movement, e.g., heel-toe action, are configured to direct arcing across one of two (first and second) spaced apart contacts on a moving arm to an adjacent arc chute to thereby alleviate deterioration due to arcing and improve conductivity of the first moving contact over time. | 06-09-2016 |
| 335016000 | Magnetic or electrodynamic (e.g., blowon or blowoff) | 9 |
| 20090072933 | AUTOMATIC CIRCUIT BREAKER WITH TRIPPING DEVICE ACTIVATED BY A MOVABLE CONTACT - This invention pertains to an automatic single- or multi-pole circuit breaker ( | 03-19-2009 |
| 20090256659 | CIRCUIT BREAKER WITH IMPROVED CLOSE AND LATCH PERFORMANCE - An apparatus includes a plurality of contacts for interrupting current flow when an overcurrent condition occurs, each contact including a mating face displaced at an angle with respect to a pivot point of at least one of the contacts, where the displacement of the mating faces is configured to minimize a repulsion force moment arm from the pivot point of at least one of the contacts. | 10-15-2009 |
| 20120169440 | MOVABLE CONTACTOR ASSEMBLY FOR CURRENT LIMITING TYPE CIRCUIT BREAKER - A movable contactor assembly for a current limiting type circuit breaker comprises a movable contactor having a pair of curved protrusions having cam profiles, a shaft to rotatably support the movable contactor located therein, a pair of contact levers each having a contact surface contactable with the curved protrusion of the movable contactor and a pair of spring supporting recess portions and a pair of springs each having both end portions supported by the spring supporting recess portions, the pair of springs applying an elastic force as contact pressure for maintaining a contact state between the movable contactor and the stationary contactor when the movable contactor is located at the first position, and applying the elastic force in a direction to separate the movable contactor from the stationary contactor when the movable contactor is moved over a dead point while rotating toward the second position. | 07-05-2012 |
| 20120176210 | CIRCUIT INTERRUPTION DEVICE AND METHOD OF ASSEMBLY - A circuit interruption device includes a conductive element configured to be coupled to a circuit, a contact arm configured to move with respect to the conductive element between a first position and a second position, and a biasing element configured to apply a biasing force on the contact arm to maintain contact between the contact arm and the conductive element when the contact arm is in the first position, wherein the contact arm is configured such that a current flow through the contact arm causes an electromagnetic repulsive force to act on the contact arm in a second direction that is opposite the first direction. | 07-12-2012 |
| 20130009731 | MAGNETIC ACTUATOR - A magnetic actuator includes a coil bobbin that has electrical wire wound around a core. The magnetic actuator also includes a plunger located in a central portion of the magnetic actuator and configured to move within a bore located in the central portion, and at least one spring located adjacent the central portion. When electrical current is provided to the electrical wire, an electromagnetic field causes the plunger to move from a first position to a second position, and stored energy associated with the spring aids in moving the plunger to the second position. The magnetic actuator further includes a linking portion coupled to the plunger, wherein the linking portion is configured to initiate an action based on movement of the plunger. | 01-10-2013 |
| 20140062623 | REMOTE OPERATED CIRCUIT BREAKER - A circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features. | 03-06-2014 |
| 20140070908 | STATIONARY CONTACT ARM ASSEMBLY FOR MOLDED CASE CIRCUIT BREAKER - A stationary contact arm assembly for a molded case circuit breaker includes a stationary contact arm having a terminal portion and a contact portion provided at both end portions thereof in the length direction, and an inclined extension portion provided between the contact portion and the terminal portion, a flat extension portion forming a space between the flat extension portion and a bottom surface of the contact potion, a bent portion formed from the flat extension portion to the terminal portion; a magnet assembly having a plurality of steel plates at least part of which is installed to be pushed into a space between the flat extension portion and contact portion in the stationary contact arm; and an elastic support plate having an elastic support portion installed on the flat extension portion of the stationary contact arm to support the magnet assembly. | 03-13-2014 |
| 20140253264 | CIRCUIT BREAKER SLOT MOTOR - A two-piece slot motor housing assembly is provided. The slot motor housing assembly includes a first J-shaped body baying a lower, first end and a second, J-shaped body having a lower, first end. The first and second J-shaped bodies coupled to form a U-shaped assembly. The first J-shaped body first end overlaps the second J-shaped body first end. | 09-11-2014 |
| 20160141137 | MAGNETIC TRIP MECHANISM FOR CIRCUIT BREAKER - A magnetic trip mechanism for a circuit breaker includes an electrically conductive strap having a first wall portion and a second wall portion that define an interior space therebetween. Also included is a flux block disposed at least partially within the interior space, and movable in response to a short circuit condition of the circuit breaker. Further included is a trip lever operatively coupled to the flux block. Yet further included is a trip latch moveable between a latched condition and an unlatched condition with a handle, wherein rotation of the trip lever occurs in response to the short circuit condition and causes movement from the flux block to actuate the trip latch to the unlatched condition. | 05-19-2016 |
