Magnetic Or Electrodynamic (e.g., Blowon Or Blowoff) Patents (Class 335/16)
  • Patent number: 10665411
    Abstract: A multi-pole circuit breaker such as a residential electronic circuit breaker is provided. It includes a means to prevent a breaker mechanism from latching, i.e., a breaker armature from latching with a cradle if certain criterion is met. In particular, the multi-pole circuit breaker comprises a breaker mechanism including a breaker armature, a cradle and an armature latch bar to prevent the breaker armature from latching with the cradle. The armature latch bar includes a recessed feature that interfaces with the breaker armature, an armature latching surface that needs to be removed before the breaker mechanism can be latched and an armature latching lever that prevents a rotation of the breaker armature.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 26, 2020
    Assignee: SIEMENS INDUSTRY, INC.
    Inventor: Russell Thomas Watford
  • Patent number: 10410810
    Abstract: A switching device for LV electric installations is disclosed which can include an outer casing and one or more electric poles. Each electric pole can include one or more mobile contacts and one or more fixed contacts adapted to be coupled or uncoupled. A mobile contact assembly is operatively coupled with the mobile contacts such that the mobile contacts move together with the mobile contact assembly. The mobile contact assembly is adapted to reversibly move between a first contact position, in which the movable contacts and the fixed contacts are coupled and a second contact position, in which the movable contacts and the fixed contacts are uncoupled. A mechanical control assembly is provided for operating said mobile contact assembly.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 10, 2019
    Assignee: ABB S.P.A.
    Inventors: Roberto Rota Martir, Mauro Ghislotti
  • Patent number: 10347436
    Abstract: A switching device for breaking an electric current including a main contact carrier, movable and stationary main contacts, the movable contact attached to the main contact carrier, an arcing contact carrier, a movable and stationary arcing contacts, the movable arcing contact attached to the arcing contact carrier and the stationary arcing contact arranged in parallel with the stationary main contact, and an actuating unit for the main and arcing contact carriers between open and close position at an actuating distance, wherein there are separation distances between the stationary and movable contacts of the main and arcing contact units respectively when the current is interrupted. The switching device further includes a first rack and a first gear for actuating the arcing contact carrier so that, when interrupting the current, a separation distance between the arcing contacts is longer than a separation distance between the main contacts.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: July 9, 2019
    Assignee: ABB Schweiz AG
    Inventors: Gunnar Johansson, David Karlén, Jonathan Jonsson, Markus Angell, Mats Henning Johansson
  • Patent number: 10297409
    Abstract: A method is disclosed for operating a circuit breaker, the circuit breaker. The circuit breaker includes an operating lever, a latching mechanism and an electrical contact system with a movable contact and a fixed contact. The operating lever is movable into an ON-position and an OFF-position. Further, the operating lever is mechanically connected via the latching mechanism to the contact system such that when the operating lever is in its OFF-position, the contacts of the electrical contact system are opened and when the operating lever is in its ON-position, the contacts of the electrical contact system are closed. Further, such a circuit breaker is also disclosed.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 21, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Pavel Naiman
  • Patent number: 10290435
    Abstract: An electrical switch includes a fixed contact member and a plurality of movable contact fingers that pivot into and out of engagement with the fixed contact member. The electrical switch also includes a fixed magnetic member and a plurality of U-shaped magnetic members housing the plurality of movable contact fingers. Upon occurrence of a fault condition, each of the plurality of U-shaped magnetic members is magnetically pulled towards the fixed magnetic member, without contacting the fixed magnetic member, such that each of the plurality of movable contact fingers is held in engagement with the fixed contact member.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: May 14, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Vinaya A. Ambekar, Joshua D. Myers, Vikrant Deshmukh, Archit Agarwal, Mandar D. Anekar
  • Patent number: 10290439
    Abstract: A permanent magnet assembly for an arc driver assembly of an electric switching device, having a permanent magnet and a cover made of electrically insulating material, wherein the cover is connected directly to the permanent magnet.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 14, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Klaus Dauer, Anke Juelich
  • Patent number: 10176945
    Abstract: A DC electrical circuit breaker includes first and second movable electrical contacts. The circuit breaker includes a magnetic circuit including a magnet and generating a magnetic field able to guide an electrical arc in the direction of a quenching chamber, and having for this purpose curved field lines extending perpendicularly to opposite lateral walls of an electrical arc formation chamber, these field lines converging, in a central region of the arc formation chamber containing the contact zones, toward the quenching chamber while extending parallel to the longitudinal plane.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 8, 2019
    Assignee: SCHNEIDER ELECTRIC INDUSTRIES SAS
    Inventors: Eric Domejean, Loic Rondot, Stephane Dye
  • Patent number: 10153119
    Abstract: A movable contact conductor assembly is provided. The movable contact arm assembly includes an elongated member with a distal tip, a first end, a medial portion, an actuator coupling second component, a primary pivot second component, a secondary pivot second component, a clinch joint second component, a second end, and a proximal tip. During an over-current event the movable contact arm assembly member generates a loop force. A loop force first portion is disposed on a first longitudinal side of the movable contact arm assembly member primary pivot second component, and, a loop force second portion is disposed on a second longitudinal side of the movable contact arm assembly member primary pivot second component.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: December 11, 2018
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Aaron Thomas Kozar, Robert Michael Slepian
  • Patent number: 9941673
    Abstract: An arrangement includes a switch including a plurality of connectable modules. A first module is a connection module, electrical connections running into an interior, starting from the connection module for connection purposes. A second module is a manual plug module, connectable via its second contacts to the connection module, electrical connections passing external to the switch starting from the manual plug module for connection purposes. A third module is a communication module including a communication electronics system and including second contacts and first contacts, the communication module being connectable via its second contacts to the connection module and the manual plug module being connectable via its second contacts to the communication module. Second contacts of the communication module are electrically connectable to first contacts of the communication module or to the communication electronics system.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: April 10, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Steffen Grasnick
  • Patent number: 9842708
    Abstract: A circuit breaker includes an electrically insulative case and a rotor assembly disposed within the electrically insulative case. The rotor assembly includes a contact arm and a rotor that is rotatable relative to the electrically insulative case. The contact arm is coupled to the rotor and movable between a first position in which a conductive path is closed and a second position in which the conductive path is open. The rotor assembly also includes a latch mechanism coupled to the rotor. The latch mechanism retains the contact arm in the second position during a short circuit event. The latch mechanism is spaced from the contact arm when the contact arm is in the first position. The latch mechanism engages the contact arm when the contact arm is in the second position.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: December 12, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Nagesh V. Tumu, Wolfgang Meyer-Haack, Dhirendra Tiwari, Amit Bose
  • Patent number: 9767980
    Abstract: An enclosure is for a slot motor of an electrical switching apparatus. The slot motor includes a number of U-shaped laminations. The enclosure includes a first member and a second member coupled to the first member to form a U-shaped enclosed region for the U-shaped laminations.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: September 19, 2017
    Assignee: EATON CORPORATION
    Inventors: Frank Joseph Stifter, Jr., Stephanie Fee Jin Lee, Brian Scott Jansto, William George Eberts
  • Patent number: 9748061
    Abstract: A switching device has a first switching path having first switching contacts and has a second switching path having second switching contacts, wherein the first switching path has a first electromagnetic tripping apparatus having a first coil winding, wherein the first coil winding has a first winding direction, wherein the second switching path has a second electromagnetic tripping apparatus having a second coil winding, and wherein the second coil winding has a second winding direction. The first switching contacts and the second switching contacts are coupled for substantially simultaneous actuation. The first switching path and the second switching path are arranged adjacent to each other in the switching device. The first winding direction is opposite the second winding direction.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: August 29, 2017
    Assignee: EATON INDUSTRIES (AUSTRIA) GMBH
    Inventor: Matthias Katzensteiner
  • Patent number: 9576761
    Abstract: A circuit breaker crossbar assembly includes a crossbar having a first and second segment, the first and second segment each operatively coupled to a respective moveable contact arm assembly. Also included is a coupling segment disposed between the first and second segment, the crossbar and the coupling segment rotatable about an axis. Further included is at least one support assembly operatively coupled to the coupling segment. The support assembly includes a bushing coupled to the coupling segment and rotatable with the crossbar and the coupling segment. The support assembly also includes a support bracket configured for affixation to a stationary structure and disposed adjacent to the bushing, the bushing rotatable relative to the support bracket. The support assembly further includes a fixing bracket engaged with the support bracket and disposed adjacent to the bushing, the bushing rotatable relative to the fixing bracket.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 21, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Christie Marie Barbera, Shawn Couceiro Fonseca, Linda Yvonne Jacobs, Dhirendra Kumar Tiwari, Nagesh Venkata Tumu
  • Patent number: 9530593
    Abstract: A circuit interrupter configured to aid in rapidly extinguishing an electrical arc regardless of the polarity of current through a circuit interrupter, and during low current conditions. Various implementations of the circuit interrupter incorporate an electromagnet and a pivoting permanent magnet. These structures produce additive magnetic fields that create a force on an arc between the contacts, urging it toward an arc arresting structure regardless of the electrical polarity of the circuit interrupter or the magnitude of the current through the circuit interrupter.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 27, 2016
    Assignee: Carling Technologies, Inc.
    Inventor: Michael Fasano
  • Patent number: 9478907
    Abstract: A plug-type connector arrangement comprising a plug-type connector and an opposing plug-type connector, which each have an insulating housing and plug-type contact elements in the insulating housing and are designed for plugging together and for making electrical contact with assigned plug-type contact elements in the plugged-together state, is described. The opposing plug-type connector has at least one latching lug. The plug-type connector has at least one latching element, which is designed so as to interact with the latching lug in the plugged-together state so as to fasten the plug-type connector on the opposing plug-type connector. At least one detachment element provided for unlocking the latching lug is arranged displaceably on the plug-type connector.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 25, 2016
    Assignee: WAGO Verwaltungsgesellschaft mbH
    Inventor: Rudolf Mastel
  • Patent number: 9431197
    Abstract: A switching system has two contact points and a contact link disposed so at be rotatably movable about an axis of rotation of the contact link between the two contact points. The switching system further has at least one quenching chamber and a magnetic element for producing a magnetic field being parallel to the axis of rotation of the contact link, for driving an arc produced when the contact points are open into the quenching chamber.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: August 30, 2016
    Assignee: Ellenberger & Poensgen GmbH
    Inventor: Manuel Engewald
  • Patent number: 9368295
    Abstract: A system including an automatic transfer switch configured to selectively route power from a first power source or a second power source to a load, comprising a switch configured to be moved between a first position and a second position, a first set of electrical contacts configured to route the power from the first power source when the switch is in the first position, a second set of electrical contacts configured to route the power from the second power source when the switch is in the second position, and a first arc chute housing configured to substantially enclose the first set of electrical contacts when the switch is in the first position.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: June 14, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jifeng Feng, Liqiang Wang
  • Patent number: 9318284
    Abstract: A circuit interrupter having a compact design. According to some implementations, the circuit interrupter includes a conductor from a terminal to a contact having a portion that is angled with respect to the housing sides. This allows a fastener sleeve used to secure the device housing to be positioned closer to the center of mass of the housing, reducing the area of the housing. In some implementations, an arc splitter is provided which includes conductive plates that are angled with respect to the housing sides, allowing the area of the housing to be reduced. In some implementations, a terminal is designed to accommodate a connection without being doubled back, reducing the clearance required for the terminal and the overall area of the circuit interrupter.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: April 19, 2016
    Assignee: CARLING TECHNOLOGIES, INC.
    Inventors: Michael Fasano, Jianzhuan Lin, James Bugryn
  • Patent number: 9218921
    Abstract: Circuit breakers with a cam follower having an upper post with the cam follower held by a cross bar to prevent cam/arm misalignment during high interruption shot on the breaker. Related cam followers have an upwardly extending post located on one side edge portion and cooperates with a shunt to provide shunt separation during high interruption breaker shots.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: December 22, 2015
    Assignee: Eaton Corporation
    Inventor: William G. Eberts
  • Patent number: 9177739
    Abstract: A scalable earthing switch that incorporates a torsion spring to effect rapid closure of the switch. The torsion spring is supported coaxially about a rotatable shaft on which contact blades are mounted resulting in compact design. The blade contacts are separated axially along the length of the shaft by one or more spacers. By using difference size spacers the distance between adjacent blade contacts can be changed and, thus, the earthing switch can be easily scaled for different applications. A latching (detent) mechanism is provided for latching the switch in an open position.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 3, 2015
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: David D. Miller
  • Patent number: 9147541
    Abstract: A circuit breaker includes a housing equipped with a first switchgear region, in which a quenching chamber device and a sliding contact device having movable contacts are located, the contacts lying opposite fixed contacts, and equipped with a second switchgear region, in which a current release assembly consisting of a short-circuit release and an overload release are located. In an embodiment, a continuous ventilation channel is formed within opposing housing walls along the fixed contacts, the channel acting as a first convective air-flow through the circuit breaker in order to dissipate the heat.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: September 29, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Wolfgang Feil, Rainer Kreutzer, Alexander Spies
  • Patent number: 9136069
    Abstract: A mover assembly of a circuit breaker is provided. A mover assembly of a circuit breaker according to one aspect includes: a terminal fixed within a circuit breaker; a connector coupled to the terminal; a plurality of movers rotatably installed in the connector; and an elastic member applying elastic force to the movers to tightly attach the movers to the connector, wherein each of the movers includes a first mover and a second mover and the elastic member is positioned between the first mover and the second mover.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 15, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Seong Yeol Cho
  • Patent number: 9099257
    Abstract: The present invention relates to a moving element for a low voltage switching device and to a switching device comprising this moving element. The moving element according to the invention comprises for each pole a housing unit suitable to receive an elastic element which interacts with an electrical contact. This latter comprises a first contact portion susceptible to contact a further electrical contact and a second portion connectable to a conductive element of the switching device. The electrical contact comprises a pin shaped portion positioned rotating in a seat defined on the housing unit so as to configure a mutual rotation axis of the electrical contact with respect to the housing unit.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: August 4, 2015
    Assignee: ABB S.p.A.
    Inventors: Luigi Bonetti, Michele Ferrari
  • Patent number: 8988175
    Abstract: An override device is described for use with a coupler of a circuit breaker. The override device comprising a cam member coupled to the coupler. The cam member comprising a slot. The override device also including an actuator coupled to the cam member and configured to move the cam member between an over-current protection position and an over-current relay override position and a push member coupled to the coupler. The slot configured to guide the push member to a first position when the actuator moves the cam member to the over-current protection position. The slot further configured to guide the push member to a second position when the actuator moves the cam member to the over-current relay override position to permit current flow through the circuit breaker.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventors: Przemyslaw Eugeniusz Cieply, Wolfgang Meyer-Haack, Jacek Marian Urbanowicz, Rafal Marek Mrotek, Jacek Stanislaw Mrowiec
  • Patent number: 8963662
    Abstract: A system comprising a circuit interrupter configured to interrupt flow of current through a circuit during an over current condition, wherein the circuit interrupter comprises two contacts configured to remain in contact when a current flowing through the two contacts is less than a threshold value, a tripping mechanism configured to separate the two contacts when the current equals or exceeds the threshold value, and at least one of either a permanent magnet or an electrode configured to extinguish an electric arc formed between the two contacts of the circuit interrupter when the two contacts are separated, wherein the circuit interrupter does not include an arc chute.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: February 24, 2015
    Assignee: General Electric Company
    Inventors: Thangavelu Asokan, Nalini Nanrudaiyan
  • Patent number: 8947181
    Abstract: An arc runner assembly for use in a circuit interrupter provides a pair of arc runners that are situated at opposite sides of a stationary contact of the circuit interrupter. If used in a DC application, the arc runner assembly is configured to communicate a positive DC arc along one of the arc runners in a first direction away from the stationary contact and is further configured to communicate a negative DC arc along the other arc runner in another direction away from the stationary contact. The arc runner assembly additionally includes a support that is electrically engaged with a conductor of the circuit interrupter on a surface opposite that on which the stationary contact is disposed. The improved arc runner assembly advantageously facilitates extinction of electrical arc and extinguishes both positive and negative DC arcs in a DC application.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: February 3, 2015
    Assignee: Eaton Corporation
    Inventors: Richard Paul Malingowski, James Patrick Sisley, Craig Joseph Puhalla, Kelly Julia McCarthy, Lance Gula
  • Patent number: 8921728
    Abstract: A switch suitable for DC applications includes: two fixed conductive contacts with first contact areas; a movable conductive bridge with two second contact areas for being connected to the two first contact areas in the on-status and for being disconnected from the two the first contact areas in the off-status; and two arc-extinguishing units configured to extinguish electric arcs occurring between the first and second contact areas after disconnecting the second contact areas from the first contact areas. First conductive arc-guiding elements extend from each first contact area into the corresponding arc-extinguishing unit and at least one second conductive arc-guiding element extends into the arc-extinguishing units suitably shaped to guide the electric arcs from each of the second contact areas of the movable bridge into the arc-extinguishing units.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: December 30, 2014
    Assignee: Eaton Electrical IP GmbH & Co. KG
    Inventors: Volker Lang, Lutz Friedrichsen
  • Patent number: 8896402
    Abstract: An apparatus is disclosed, which includes a hinged armature and a yoke. In at least one embodiment, the hinged armature is supported in a cutout in the yoke and can pivot between at least two positions, the cutout in the yoke having an edge, on which the hinged armature is supported.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Soukup
  • Publication number: 20140313630
    Abstract: This invention discloses a type of intelligent magnetic-hold miniature circuit breaker and its control method, comprising a casing, a magnetic-hold relay, and a drive circuit, wherein said drive circuit receives control signal and then drives operation of said magnetic-hold relay; said magnetic-hold relay comprises a dynamic spring assembly, a static spring assembly, a deflector rod, a pushing piece, and a magnetic steel assembly; rotation of said magnetic steel assembly drives said deflector rod and then closing or opening of contacts of said dynamic spring assembly and said static spring assembly via said pushing piece; said miniature circuit breaker also includes a central processor, a communication chip, and a voltage state circuit; and said deflector rod extends out through a hole on said casing to allow manual operation.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 23, 2014
    Inventor: Zhenyang LIU
  • Publication number: 20140253264
    Abstract: 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.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: EATON CORPORATION
    Inventors: WILLIAM G. EBERTS, KENNETH D. KOLBERG, BRIAN S. JANSTO
  • Patent number: 8822862
    Abstract: It comprises fixed terminal 42 provided with fixed contact 42a; movable armature 44 provided with movable contact 45; shaft 44 inserted in the movable armature; sealing container 40 holding the fixed terminal and housing the movable armature and the shaft therein in hermetically-sealed state; contact pressure spring 410 giving contact pressure between the movable contact and the fixed contact; return spring 411 urging the shaft to move away from the fixed contact; operation handle 1; shaft pressing piece 56 pressing, in accordance with the operation of the operation handle, the other end of main body of the shaft to move the shaft closer to the fixed contact; and electromagnetic tripping block 6 which makes the movable/fixed contacts open by taking the pressing means away from the other end of the main body of the shaft in case that anomalous current flows through the movable/fixed contacts when they are contacted.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 2, 2014
    Assignee: Panasonic Corporation
    Inventor: Takaaki Cyuzawa
  • Patent number: 8822866
    Abstract: A circuit interrupter has a first contact, a second contact movable with respect to the first contact, an arcing chamber, and an arc splitter. The arc splitter is located on a first side of the first contact, as is an arc runner. An electrical conductor is connected to the arc runner having a first portion running from the first side of the first contact towards a second side of the first contact, the second side being opposite the first side with respect to the first contact. A second portion is connected to the first portion and the second contact; the second portion is located on the second side of the first contact. A current running through the arc runner and the electrical conductor generates a magnetic force on the arc moving the arc toward the arc splitter.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: September 2, 2014
    Assignee: Carling Technologies, Inc.
    Inventor: Michael Fasano
  • Patent number: 8809722
    Abstract: Circuit breakers having an electrical contact assembly with a moving electrical contact that is linearly translatable within an inner cavity are disclosed. A guide linearly carries a moveable contact assembly having the moving electrical contact and the guide has one or more guide supports accessible by a drive member external to the cavity. According to another aspect, a circuit breaker electrical contact assembly and method of operating a circuit breaker is provided, as are other aspects.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 19, 2014
    Assignee: Siemens Industry, Inc.
    Inventors: Hai Chen, Hector Malacara, Justin Cyle Bennett
  • Patent number: 8735758
    Abstract: A circuit breaker which includes first and second contact pairs and a contact arm arranged in series. A first arm contact and a first terminal contact from a first line terminal form a first contact pair. A second arm contact and a second terminal contact from a second line terminal contact form a second contact pair. The first contact pair, contact arm and second contact pair are connected in a series arrangement in which the air gaps formed when the first and second contact pairs are separated combine to form an effective air gap which is double in size and thus increases an interrupting capacity of the circuit breaker. An arc chamber is associated with the first and second contact pairs for extinguishing an arc formed in the air gaps. The first and second contact pairs may also be arranged in a parallel configuration for increasing an amperage rating of the circuit breaker.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: May 27, 2014
    Assignee: Siemens Industry, Inc.
    Inventors: Hai Chen, Larry Navarre, Hector Malacara
  • Patent number: 8723627
    Abstract: An electrical cut-off device (1) with high electrodynamic resistance in which the fixed contacts (4) and the moving contact (5) are arranged according to an architecture forming a current loop so that the Laplace electromagnetic forces, called compensation forces (Fc), generated by the circulation of the current (I) in the current loop, are oriented in a direction flowing from the inside toward the outside of the current loop, and in which the actuator mechanism (6) is arranged for moving the moving contact (5) inside of the current loop, from its switched-off position to its switched-on position in a direction (Fd) that is identical to the direction of the compensation forces (Fc).
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: May 13, 2014
    Assignee: Socomec, S.A.
    Inventors: Marc Serpinet, Yves Trichard, Arnaud Marchal
  • Patent number: 8717127
    Abstract: A molded case houses switching parts and includes a case main body and a cover placed on an upper portion of the case main body. The case main body includes a bottom portion case that forms a bottom portion of a circuit breaker and an intermediate case, placed on an upper portion of the bottom portion case, having a dividing wall that blocks off a space between the intermediate case and the bottom portion case. A power source side terminal block and second movable contact are fitted inside the bottom portion case, and a first movable contact, the load side terminal block, the contact portion, and the arc extinguishing chamber are fitted inside the intermediate case.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 6, 2014
    Assignee: Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Shinichiro Ando, Koji Asakawa, Akifumi Sato, W. P. Hemantha Desilva, Tomoo Yamazaki
  • Patent number: 8698024
    Abstract: A pressure sensitive circuit breaker trip unit has a case forming a gas receiving cavity and a cavity accommodating movement of an actuator body with a trip lever. The actuator is moved by pressure of circuit interruption gases entering the gas receiving cavity. The actuator body has a hollow therein for accepting the interruption gases and accompanying hot debris thereby reducing any fouling of the movement accommodating cavity which may impede movement of the actuator body on subsequent circuit interruptions.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: April 15, 2014
    Assignee: Schneider Electric USA, Inc.
    Inventor: Cameron L. Woodson
  • Patent number: 8686814
    Abstract: A switching device having an ultra-fast actuating mechanism for opening electric contacts, the device having a propulsion coil and a conducting disk. A stationary contact collaborates in a closed position with a movable contact, said contacts being moved to an open position by repulsion of the conducting disk. A biasing device generates a closing force to hold the electrical contacts in the closed position. Latching means, for maintaining the movable contact in the open position, includes a magnetic yoke having an attraction coil providing an attraction force of a magnetic movable armature. The movable contact is supported by a contact-bearing support having drive means collaborating with the magnetic movable armature to cause movement thereof when movement of the movable contact takes place.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: April 1, 2014
    Assignee: Schneider Electric Industries SAS
    Inventors: Julien Bach, Cédric Bricquet
  • Patent number: 8674793
    Abstract: A power contact device comprises two stationary and movable contact elements, the two elements being in the form of two juxtaposed coiled turns arranged facing one another in the open position. Each turn is made from a material that is both magnetic and current conducting to constitute a single part acting as power contact, as coil generating a magnetic induction field, and as magnetic circuit performing strengthening and channelling of said magnetic field.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: March 18, 2014
    Assignee: Schneider Electric Industries SAS
    Inventor: Gérald Le Youdec
  • Publication number: 20140070908
    Abstract: 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.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 13, 2014
    Applicant: LSIS CO., LTD.
    Inventor: Jun Yong JANG
  • Publication number: 20140062623
    Abstract: 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.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Inventor: Michael Fasano
  • Patent number: 8629744
    Abstract: An enclosed switch includes a switch assembly having separable contacts; an operating mechanism structured to open and close the separable contacts; and a shunt trip mechanism cooperating with the operating mechanism to trip open the separable contacts, wherein the operating mechanism includes a manual operating mechanism.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: January 14, 2014
    Assignee: Eaton Corporation
    Inventors: Richard D. Prohaska, Jeffrey B. Ensley
  • Patent number: 8587394
    Abstract: A reed switch assembly of a magnetic latching relay includes a movable reed, an immovable reed, a movable contact and an immovable contact. The movable contact and the immovable contact are disposed at respective ends of the movable reed and the immovable reed. The end with the movable contact of the movable reed is bent twice to form a reverse U-shaped end. The end with the immovable contact of the immovable reed is bent twice to form a U-shaped end. The reverse U-shaped end of the movable reed and the U-shaped end of the immovable reed are interlaced. The present invention further comprises a tension spring. One end of the tension spring is fixed to the reverse U-shaped end of the movable reed, and another end of the tension spring is mounted to a base of the magnetic latching relay.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 19, 2013
    Assignee: Dongguan Sanyou Electrical Appliances Co., Ltd.
    Inventor: Chao-Yang Song
  • Patent number: 8497752
    Abstract: 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.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: July 30, 2013
    Assignee: LSIS CO., Ltd.
    Inventor: Byeong Su An
  • Patent number: 8487721
    Abstract: 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.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: July 16, 2013
    Assignee: General Electric Company
    Inventor: Praneeth Kumar Madamshetty
  • Patent number: 8461947
    Abstract: An installation switching device which rapidly disconnects short-circuit currents is provided. A contact lever is arranged at least partially in an air gap in a magnetic circuit such that, in case of a short circuit, the interaction between current flow and magnetic flux within the air gap can result in an electrodynamic force effect, which leads to rapid opening of at least one contact point. A switching mechanism acts via a first operating connecting line on the contact lever to open the contact point and/or to keep it open. In case of overcurrent tripping, an overcurrent release acts, by a switching mechanism and via a second operating connecting line, on the switching mechanism to open the contact point and keep it open. In case of short-circuit tripping, the contact lever acts via a third operating connecting line on the switching mechanism to keep the contact point open.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: June 11, 2013
    Assignee: ABB AG
    Inventors: Joachim Wendel, Roland Ritz, Joachim Becker, Ralf Weber
  • Patent number: 8451074
    Abstract: A load breaking switch including a rotor embodied as a switch shaft segment, and a contact arm pivotally mounted in the rotor pivotable between an ON and OFF position about an axis of rotation and at the free end of which is a contact piece which is pivotable with the contact arm and is in contact with an opposite fixedly arranged contact piece when the contact arm is in its ON position. Current flows through the switch via the contact pieces and the contact arm. The contact arm is pivotable into its OFF position when the current flowing via the contact pieces exceeds a rated current value or an overload current value. A magnetizable area is spatially arranged inside the rotor such that the current flowing through the contact arm in this area induces a magnetic field which exerts a torque on the contact arm.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: May 28, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Wolfgang Erven
  • Patent number: 8451076
    Abstract: A current path in an installation switching device includes first and second contact points, which respectively include first and second levers. The second lever is arranged in an air gap in a magnetic circuit. In case of a short circuit, an electrodynamic force, which leads to rapid opening of the second contact point, can act on the second lever due to interaction of current flow with magnetic flux within the air gap. A switching mechanism acts via a first connecting line on the first lever to open and/or keep open the first contact point. In case of overcurrent tripping, an overcurrent release acts through the switching mechanism and a second connecting line on the switching mechanism to open and keep open the first contact point. In case of short-circuit tripping, the second lever acts via a third connecting line on the switching mechanism to keep the first contact point open.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: May 28, 2013
    Assignee: ABB AG
    Inventors: Joachim Wendel, Roland Ritz, Joachim Becker
  • Patent number: 8390405
    Abstract: A circuit breaker comprises a latching plate rotatably coupled to a moveable plate, and tensile type latching springs, each latching spring having two ends fixed to the latching plate and the moveable plate, respectively. Time taken for a moveable contact to be lifted up from a contact time point between the moveable contact and a fixed contact may be shortened, and thus a time duration for which an accident current flows may be reduced. Accordingly, the amount of energy applied to the circuit breaker may be reduced, and a breaking function of the circuit breaker may be enhanced. Furthermore, since a contact pressure between the moveable contact and the fixed contact has a constant change, a reliability on a conductive state of the moveable contact and the fixed contact may be enhanced.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: March 5, 2013
    Assignee: LS Industrial Systems Co., Ltd.
    Inventor: Seung Pil Shin
  • Publication number: 20130049905
    Abstract: A power contact device comprises two stationary and movable contact elements, the two elements being in the form of two juxtaposed coiled turns arranged facing one another in the open position. Each turn is made from a material that is both magnetic and current conducting to constitute a single part acting as power contact, as coil generating a magnetic induction field, and as magnetic circuit performing strengthening and channelling of said magnetic field.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 28, 2013
    Applicant: Schneider Electric Industries SAS
    Inventor: Gérald Le Youdec