With Arc-suppression Or Extinguishing Means Patents (Class 335/201)
  • Patent number: 9653236
    Abstract: An electromagnetic relay which is improved in arc blocking performance without being increased in size is desired. An electromagnetic relay according to the present invention is provided with a fixed contact, a moving contact which is movable respect to the fixed contact, a pair of magnets which is arranged at the side of the fixed contact and the moving contact so that pole faces with mutually reversed polarity are separated from and face each other and a pair of arc cooling plates which is arranged in a spaces between the magnets and which has first surfaces which face each other across a gap and second surfaces which face a pole face of either of the magnets, respectively.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: May 16, 2017
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Nobuyoshi Hiraiwa, Yasushi Saito, Kazutaka Nagamine, Yuki Kakoiyama, Yanfeng Wu
  • Patent number: 9589751
    Abstract: Conventional example is arranged simply to turn a circuit on/off, and not to changeover connection. Sealed relay 1 comprises: insulating tube 2; first relay connect portion 4 attached to one end of insulating tube 2, and provided with first contact 3 on inside surface; second relay connect portion 5 disposed in confrontation with first relay connect portion 4 in insulating tube 2; movable member 7 disposed movably between first and second relay connect portions 4 and 5, and provided with second contact 6 contacting with first contact 3 when moved toward the first relay connect portion; and operating mechanism to move the movable member. Third relay connect portion 10 including third contact 9 is provided between the second and first relay connect portions. Movable member 7 includes a fourth contact contacting with the third contact when the first and second contacts are out of contact from each other.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: March 7, 2017
    Assignee: MEIDENSHA CORPORATION
    Inventors: Daizo Takahashi, Toshimasa Fukai, Masahiko Ieda
  • Patent number: 9589743
    Abstract: A high-stability miniature circuit breaker has a pivotal shaft having a first section, a second section and a shoulder. The diameter of the second section is larger than the first section. The shoulder diameter is larger than the second section. A pivoting lever on the first section limits the axial position of a protruding mesa relative to the shaft by contact fit between the mesa and a thrust surface on the second section. A pivoting latch is on the second section. A first end face fits to a support surface on the shoulder. A second end face fits to the protruding mesa at the other end. The latch controls a drive rod and the lever. A connecting rod separates from the latch when latch hasps are separated and the latch separates from the drive rod which slides along a groove of the lever.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: March 7, 2017
    Assignee: NOARK ELECTRICS (SHANGHAI) CO., LTD.
    Inventors: Qian Lu, Pengbin Yan
  • Patent number: 9465075
    Abstract: A method of providing wetting current diagnostics for a load control switch includes changing test switch settings of a detection circuit from an operational configuration to a testing configuration. The test switch settings specify respective states of first and second test switches of the detection circuit. The first and second test switches are connected to a node of the detection circuit through which, in the operational configuration, a wetting current for the load control switch flows. The method includes determining whether a voltage at the node becomes no longer indicative of the operational configuration as a result of the changed test switch settings, returning the test switch settings to the operational configuration, and providing a wetting current fault indication if the voltage at the node fails to return to a level indicative of the operational configuration after returning the test switch settings to the operational configuration.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 11, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: William E. Edwards, Anthony F. Andresen
  • Patent number: 9418804
    Abstract: A switching device having at least one contact pair includes a first contact and a second contact, where at least the second contact is movable relative to the first contact. There is an extinguishing device with at least one extinguishing chamber for extinguishing an arc produced between the contacts, a first guide rail arrangement for guiding the arc with one direction of current and a second guide rail arrangement for guiding the arc with the second direction of current in said extinguishing chamber. Both guide rail arrangements have a first guide rail and a second guide rail, where both first guide rails starting from the first contact run in the opposite direction, and both second guide rails starting from the second contact run in the opposite direction. The first guide rails are connected with each other in an electrically conductive arrangement in the form of a closed loop.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: August 16, 2016
    Assignee: EATON ELECTRICAL IP GMBH & CO. KG
    Inventors: Karsten Gerving, Volker Lang, Johannes Meissner, Ralf Thar
  • Patent number: 9412540
    Abstract: A small-size switch having an arc runner is provided. The switch includes fixed contacts each of which is bonded with each one end of fixed contactors 6U; movable contacts 10U each of which is bonded with each of movable contactors 9 and each of which can contact with or leave from each of the fixed contacts; an interphase barrier 80 that is disposed so as to partition the movable contacts 10U one by one and that is an insulator; and an arc runner that has an arc extinguish portion 12A and that is disposed so as not to intrude in a space where the interphase barrier 80 and the movable contactor 9 are most closely located.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 9, 2016
    Assignee: MITSUBISHI ELECTRIC CORP.
    Inventors: Tomohiko Takemoto, Takashi Inaguchi
  • Patent number: 9373469
    Abstract: Disclosed is a molded case circuit breaker. The molded case circuit breaker includes include: a case; an interrupter assembly installed in the case, and provided with an arc gas outlet; an exhaustion guiding portion disposed between the interrupter assembly and the terminal portion; an exhaustion cover mounted to the case, with a structure to cover the exhaustion guiding portion; and exhaustion guides spaced from each other in the exhaustion guiding portion, in a direction perpendicular to an arc gas discharge direction, in a state where the gas divergence portion is disposed therebetween, the exhaustion guides forming the arc gas passage together with the gas divergence portion. Under such configuration, arc gas discharged out of the arc gas outlet can be rapidly discharged to outside through the exhaustion guides, without an eddy current.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: June 21, 2016
    Assignee: LSIS CO., LTD.
    Inventor: Bong Yun Jang
  • Patent number: 9373467
    Abstract: An electromagnetic contactor includes a contact device having a contact housing case formed from an insulating material and housing a pair of fixed contacts and a movable contact disposed to be capable of contacting to and separating from the pair of fixed contacts. On an inner peripheral surface of the contact housing case along the movable contact, arc extinguishing permanent magnets magnetized so that magnetic pole faces facing each other have same polarity are disposed to be near the movable contact.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: June 21, 2016
    Assignees: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD., FUJI ELECTRIC CO., LTD.
    Inventors: Yasuhiro Naka, Kouetsu Takaya, Kenji Suzuki, Yuji Shiba, Masaru Isozaki
  • Patent number: 9214305
    Abstract: A switch for multi-pole direct current service independent of polarity includes a plurality of switching chambers. Each chamber includes a double interrupter having two separate fixed contacts with a first contact area, a movable contact piece with two second contact areas, each for creating a connection between the contact areas in an ON state and for separating the contact areas in an OFF state, and at least two quenching devices for quenching arcs occurring when the OFF state is brought about. The switch also includes magnets for exerting a magnetic field in an area of the contact areas to exert a magnetic force on the arcs and drive the arcs, independent of their current direction, in the direction of one of the erasing devices. The contact pieces are disposed with the second contact areas essentially in a line perpendicular to a direction of motion of the arcs.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: December 15, 2015
    Assignee: EATON ELECTRICAL IP GMBH & CO. KG
    Inventors: Volker Lang, Lutz Friedrichsen
  • Patent number: 9123481
    Abstract: An embodiment of the invention relates to a switch pole of a circuit breaker having two pole shells between which are disposed, in the assembled state, at least one switching contact, current-carrying elements and an arc quenching device having an arc runner plate and at least one splitter plate delimiting an arc chute, wherein at least one slot for accommodating the splitter and/or arc runner plate is provided between the pole shells. In at least one embodiment, there is provided inside between the pole shells a functional component having a least one slot spaced apart from the pole shells which is used to accommodate the at least one splitter and/or arc runner plate.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 1, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Jörg-Uwe Dahl
  • Patent number: 9117605
    Abstract: Provided is a DC power relay. The DC power relay includes a pair of fixed contacts disposed parallel to each other, a movable contact vertically movable with respect to the pair of fixed contacts, the movable contact being in connect with or being separated from the pair of fixed contacts, a pair of permanent magnets for guide an arc generated when the movable contact is in contact with or is separated from the pair of fixed contacts to the outside, and a damping magnet reducing a force generated in a direction in which the movable contact is separated from the fixed contacts when the movable contact is in contact with the fixed contacts.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: August 25, 2015
    Assignee: LSIS Co., Ltd.
    Inventors: Jung Sik An, Hyun Woo Joo
  • Patent number: 9087655
    Abstract: A contact device includes a contact point block, a drive unit, and permanent magnets. The contact point block includes fixed terminals having fixed contact points and a movable contactor having movable contact points arranged side by side on one surface of the movable contactor. The movable contact points are configured to come into contact and out of contact with the fixed contact points. The drive unit drives the movable contactor such that the movable contact points come into contact and out of contact with the fixed contact points. The permanent magnets are arranged in a mutually opposing relationship across the contact point block along a direction orthogonal to an arrangement direction of the movable contact points and to a direction in which the movable contact points come into contact and out of contact with the fixed contact points. The permanent magnets are provided with mutually-opposing surfaces having the same polarity.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: July 21, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideki Enomoto, Ritu Yamamoto, Yoshihisa Fukuda, Yoji Ikeda, Ryosuke Ozaki
  • Publication number: 20150145620
    Abstract: An electrical contactor is provided comprising a first terminal having a fixed member with at least one fixed electrical contact; a second terminal; at least one electrically-conductive movable arm in electrical communication with the second terminal and having a movable electrical contact thereon; and an AC dual-coil actuator having a first drive coil drivable to open and close the movable and fixed electrical contacts, and a second non-drive coil feedback connected to induce a reverse flux to temper and stabilize a net flux, thereby enabling control of a delay time of the opening and closing electrical contacts so as to be at or adjacent to a zero-crossing of an associated AC load current
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventor: Richard Anthony Connell
  • Patent number: 9040864
    Abstract: A profiled arc splitter plate for a switch having a fixed contact and a movable contact is provided to increase electromagnetic attractive forces on the arc generated during contact separation. The plate (300) comprises a body (306) defining an operatively inverted substantially V-shaped recess having a center notch (302) provided at the vertex of the recess and at least one protrusion (304) defined on either side of the center notch (302) along the inclined side walls of the recess, the movable contact of the switch displaceable through the recess without contacting the inclined side walls, in a spaced apart manner from the protrusions (304) and the center notch (302). Chamfers 308 are provided at an end of the plate (300) proximal to the vertex of the recess to provide an exit for hot gases towards the vent of the arc chamber.
    Type: Grant
    Filed: August 31, 2013
    Date of Patent: May 26, 2015
    Assignee: ASCO Power Technologies, L.P.
    Inventor: Varsha Kundalik Kharade
  • Patent number: 8994482
    Abstract: An electromagnetic contactor has an arc extinguishing chamber housing a contact mechanism having a pair of fixed contacts and a movable contact that contacts with the pair of fixed contacts. The arc extinguishing chamber has a plate-shaped fixed contact support insulating substrate including through holes to fix at least the pair of fixed contacts and formed with a metal foil on an outer peripheral circumferential edge of one surface by a metalizing process. The pair of fixed contacts and a metal cylindrical body are brazed and joined to the metal foils of the fixed contact support insulating substrate, and an insulating cylindrical body is disposed on an inner peripheral surface of the metal cylindrical body.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: March 31, 2015
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Shoji Yokoyama, Yuichi Yamamoto
  • Patent number: 8963663
    Abstract: An object of the present invention is to provide a contact switching device having high dimension accuracy and an inexpensive price, and including a small sealed space. For this, there is provided a contact switching device that drives a contact mechanical portion (30) arranged inside a sealed space (43) to perform contact switching, based on excitation and degauss of an electromagnet portion (50) arranged outside the sealed space (43). Particularly, a ceramic plate (31) holding a fixed contact terminal (33) of the contact mechanical portion (30) is bonded to and integrated with an upper opening edge portion of a metal cylindrical flange (32), while a plate-like yoke (37) is bonded to and integrated with a lower opening edge portion opposed to the upper opening edge portion to form the sealed space (43).
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: February 24, 2015
    Assignee: Omron Corporation
    Inventors: Keisuke Yano, Ryuichi Hashimoto, Yasuo Hayashida, Shingo Mori
  • Patent number: 8952772
    Abstract: An electromagnetic contactor includes a base plate having an aperture hole; an arc extinguishing chamber formed by a fixed terminal support insulating substrate and a cylinder portion; and a bottomed tubular cap in which one end thereof is open. An arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a flange portion. A cap connection portion is formed by the cap and a second connection member having a tube portion and a flange portion. The flange portion of the first connection member is attached to one surface of the base plate, and the flange portion of the second connection member is attached to the other surface of the base plate, so that the arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: February 10, 2015
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Seiji Imamura, Kouichi Okamoto, Taku Ogawa, Yuichi Yamamoto, Kouetsu Takaya
  • 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: 8947182
    Abstract: A selective release with a moving element is disclosed. The moving element is here mounted such that the moving element, in addition to the motion about its swivel axis, is guided in its motion by way of a brace. As a result of this, the moving element is mounted such that the trajectory of the blocking element essentially runs in a plane which extends transversely to the direction of flow of the flow channel.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Torsten Ahlert, Marc Liebetruth
  • Publication number: 20150022296
    Abstract: A switch has a pair of fixed contacts installed in an arc extinguishing container and disposed to maintain a predetermined space therebetween, and a movable contact disposed so as to come into and out of contact with the pair of fixed contacts. The arc extinguishing container includes an open-topped tub-shaped metal body, an insulating holding member which holds the pair of fixed contacts, disposed on an inner side of the tub-shaped metal body, opposite to the movable contact, and an open-bottomed tub-shaped resin cover which covers the pair of fixed contacts and the movable contact from an open edge face side of the tub-shaped metal body. A periphery of an open edge of the resin cover is sealed to a bottom surface of the tub-shaped metal body with an adhesive agent.
    Type: Application
    Filed: October 2, 2014
    Publication date: January 22, 2015
    Inventors: Kouetsu TAKAYA, Kenji SUZUKI, Yasuhiro NAKA
  • Patent number: 8937519
    Abstract: A contactor for DC operation includes a first and a second contact that are fixed contacts and a contact bridge that has a third and a fourth contact. The contact bridge, in a closed position, provides a tactile contact between a first contact pair, which comprises the first and the third contact, and between a second contact pair, which comprises the second and the fourth contact. The contact bridge is movable via a guide along a direction of movement. A magnet arrangement is configured to generate an electromagnetic force on an electric arc, which arises on opening the contacts. The contact bridge has at least one recess, which is arranged between the guide and the third contact. The recess is configured to provide an opening at the contact bridge through which the arc, generated at the third contact, is deflected in the direction of movement of the contact bridge.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: January 20, 2015
    Assignee: Eaton Electrical IP GmbH & Co. KG
    Inventors: Karsten Gerving, Ralf Thar, Johannes Meissner, Volker Lang
  • Patent number: 8901445
    Abstract: A magnetic contactor has a stationary contact including a first and second stationary contact pieces, each having a stationary contact portion and a stationary terminal portion, a third stationary contact piece disposed between the first stationary contact piece and the second stationary contact piece and having two stationary contact portions; a contact support casing supporting the stationary contact with the stationary terminal portions protruding out of the contact support casing; and a movable contact installed in the contact support casing, and including a first and second movable contact pieces contactable and separable from the stationary contact portions of the stationary contact pieces and the stationary contact portions of the third stationary contact piece accordingly, and an insulator fixing the first movable contact piece and the second movable contact piece. A driving mechanism drives the movable contact to contact and separate from the stationary contact.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: December 2, 2014
    Assignees: Fuji Electric FA Components & Systems Co., Ltd., Fuji Electric Co., Ltd.
    Inventors: Hiroyuki Tachikawa, Masaru Isozaki, Yuji Shiba
  • Patent number: 8902026
    Abstract: To provide an electric current switching apparatus having a fixed-side electrode unit and a movable-side electrode unit that are arranged to align central axes thereof with each other and to face each other, in which a movable contact provided in the movable-side electrode unit reciprocates on the central axis to contact or separate from a fixed-side contact provided in the fixed-side electrode unit, thereby switching electric current flowing through these electrode units, the electric current switching apparatus including a plurality of permanent magnets that are provided in at least one of the fixed-side electrode unit and the movable-side electrode unit, that have bodies arranged on the central axis to align magnetizing directions thereof with the central axis, and that are arranged to cause same poles of adjacent ones of the permanent magnets to face each other as if butting with each other.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Fujita, Hironori Kashiwagi, Shinichiro Nakauchi
  • Patent number: 8902028
    Abstract: An electromagnetic contactor includes a base plate having an aperture hole; an arc extinguishing chamber formed by a fixed terminal support insulating substrate and a cylinder portion; and a bottomed tubular cap in which one end thereof is open. An arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a flange portion. A cap connection portion is formed by the cap and a second connection member having a tube portion and a flange portion. The flange portion of the first connection member is attached to one surface of the base plate, and the flange portion of the second connection member is attached to the other surface of the base plate, so that the arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: December 2, 2014
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Seiji Imamura, Kouichi Okamoto, Taku Ogawa, Yuichi Yamamoto, Kouetsu Takaya
  • Patent number: 8902027
    Abstract: The present invention relates to an electric protection apparatus comprising at least one switching module fitted on a mounting support, and a control device with an electromagnetic coil juxtaposed with one of the above-mentioned modules, this device comprising a magnetic shield arranged in a plane substantially perpendicular to the plane of the mounting support, said shield being located between the control device and the switching module situated closer to said device, facing the coil of the control device, and comprising at least one ferromagnetic part shaped in such a way that said shield performs magnetic guiding of the arc as soon as separation of the contacts takes place so as to increase the propulsion component of the Laplacian force acting on the arc as soon as separation of the contacts takes place.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: December 2, 2014
    Assignee: Schneider Electric Industries SAS
    Inventors: Jean-Claude Ramirez, Benoît Hage, Jean-Yves Amblard
  • Patent number: 8884728
    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 portion, 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: Grant
    Filed: September 4, 2013
    Date of Patent: November 11, 2014
    Assignee: LSIS Co., Ltd.
    Inventor: Jun Yong Jang
  • Patent number: 8853585
    Abstract: An electromagnetic contactor includes a first stationary contact having a stationary contact portion and a stationary terminal portion for connecting to a power supply; a second stationary contact having a stationary contact portion and a stationary terminal section for connecting to a load; a stationary-contact supporting case supporting the stationary terminal portions of the first and second stationary contacts to protrude the contact support casing, and maintaining a predetermined distance in between; a moving-contact portion contactable to and separable from the stationary contact portion of the first and second stationary contact and arranged in the stationary-contact supporting case; and a pair of arc-extinguishing magnets arranged in parallel to sandwich the moving-contact portion in the longitudinal direction and having same magnetic polarity at opposing magnetic pole surfaces.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 7, 2014
    Assignees: Fuji Electric FA Components & Systems Co., Ltd., Fuji Electric Co., Ltd.
    Inventors: Hiroyuki Tachikawa, Masaru Isozaki, Osamu Kashimura, Kouetsu Takaya, Yasuhiro Naka, Yuji Shiba
  • Patent number: 8823474
    Abstract: To promptly extinguish an arc generated between contacts with a simple and inexpensive structure without negatively influencing the spring property of a movable contact piece. A contact switching mechanism includes a fixed contact piece with a fixed contact and a movable contact piece with a movable contact which faces the fixed contact in a contactable manner. At least either one of the contact pieces is provided with an extension which extends toward the contact of the remaining contact piece.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 2, 2014
    Assignee: Omron Corporation
    Inventors: Toshiyuki Kakimoto, Tetsuo Shinkai, Yasuyuki Masui, Tsukasa Yamashita
  • Patent number: 8823475
    Abstract: An electromagnetic relay includes multiple contact sets each including a fixed contact and a movable contact displaceable in a first direction to approach the fixed contact and in a second direction to move away from the fixed contact; multiple permanent magnets each provided on the peripheral side of a corresponding one of the contact sets and having a polarity direction perpendicular to the first and second directions; and multiple ferromagnetic bodies parallel to the polarity directions of the permanent magnets and the first and second directions, wherein in a DC electric current flowing through each of the contact sets, the direction of a force exerted based on the permanent magnet is equal to the direction of a force exerted based on the ferromagnetic body.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: September 2, 2014
    Assignee: Fujitsu Component Limited
    Inventors: Ryuji Sasaki, Takashi Yuba
  • 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: 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: 8803642
    Abstract: An electromagnetic contactor has a base plate having an aperture hole; an arc extinguishing chamber including a fixed terminal having a vent portion and a pipe obliquely inserted from outside a wall surface and connecting the vent portion; and a bottomed tubular cap in which one end thereof is open. An arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a tube portion connected to the arc extinguishing chamber and a flange portion contacting with the base plate. A cap connection portion is formed by the cap and a second connection member having a tube portion connected to the cap and a flange portion connected to the base plate. The arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 12, 2014
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Seiji Imamura, Kouichi Okamoto, Taku Ogawa, Yuichi Yamamoto, Kouetsu Takaya
  • Patent number: 8803021
    Abstract: A switch unit for a DC circuit is disclosed, which includes a first switch contact, and a second switch contact, which is movable between a first position, wherein the first switch contact contacts the second switch contact, and a second position, wherein the second switch contact is separated from the first switch contact. A positioning element to position an arc chute on the switch unit, the arc chute comprises a plurality of substantially parallel metal plates, the positioning element arranged to guide an arc, which is created between the first switch contact and the second switch contact, into the arc chute in an arc displacement direction in order to be extinguished. At least one gas emitting element, wherein at an interruption operation of the circuit breaker at its nominal current, the arc between the first switch contact and the second switch contact vaporizes a portion of the gas emitting layer.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 12, 2014
    Assignee: ABB Technology AG
    Inventors: Philippe Noisette, Yoann Alphand, Philippe Häberlin
  • Publication number: 20140176268
    Abstract: An electromagnetic switch has a contact device having a pair of fixed contacts fixed inside an arc extinguishing chamber housing and a movable contact disposed to contact with and separate from the fixed contacts; and an electromagnetic device having a movable plunger moving between an opened position wherein the movable contact separates from the fixed contacts and a closed position wherein the movable contact contacts with the fixed contacts and pressed down. The arc extinguishing chamber housing is provided with permanent magnets to extinguish an arc generated at an opening time when the movable contact separates from the fixed contacts from a state in the closed position wherein the movable contact is contacting with the fixed contacts. In a state wherein the movable plunger is in the opened position, a magnetic circuit is formed starting from the permanent magnets and returning to the permanent magnets through the movable plunger.
    Type: Application
    Filed: June 14, 2011
    Publication date: June 26, 2014
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Kenji Suzuki, Yasuhiro Naka, Kouetsu Takaya, Yuji Shiba, Yuichi Yamamoto
  • Patent number: 8760247
    Abstract: An electromagnetic contactor has a contact device including a contact housing for housing a pair of fixed contact pieces and a movable contact piece disposed to contact with and separate away from the pair of fixed contact pieces, a pair of arc-extinguishing inner permanent magnets disposed on inner peripheral surfaces of the contact housing, and a pair of arc-extinguishing outer permanent magnets disposed on outer peripheral surfaces of the contact housing at a section facing the arc-extinguishing inner permanent magnets. Magnetic pole surfaces of the arc-extinguishing inner permanent magnets are arranged in a close vicinity of the movable contact piece and are magnetized to have the same polarity facing each other. The arc-extinguishing outer permanent magnets are magnetized in the same direction as the arc-extinguishing inner permanent magnets disposed nearby and coercive force of the arc-extinguishing outer permanent magnets is greater than of that the arc-extinguishing inner permanent magnets.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 24, 2014
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Masaru Isozaki, Osamu Kashimura, Hiroyuki Tachikawa, Kouetsu Takaya, Yasuhiro Naka, Yuji Shiba
  • Publication number: 20140159837
    Abstract: An electromagnetic relay includes a first stationary contact; a second stationary contact that is aligned with the first stationary contact in a first direction; a first movable contact that is movable toward/away from the first stationary contact in a second direction perpendicular to the first direction; a second movable contact that is movable toward/away from the second stationary contact in the second direction; and a first permanent magnet and a second permanent magnet that face each other. A first contact part, formed by the first stationary contact and the first movable contact, and a second contract part, formed by the second stationary contact and the second movable contact, are interposed between the first permanent magnet and the second permanent magnet in the first direction. The first permanent magnet and the second permanent magnet extend in a third direction, which is perpendicular to the first direction and the second direction.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 12, 2014
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Nobuyoshi Hiraiwa, Yasushi Saito, Yuki Kakoiyama, Yanfeng Wu
  • Patent number: 8749331
    Abstract: An electromagnetic contactor has a contact device having a contact housing case housing a pair of fixed contacts and a movable contact disposed to be capable of contacting to and separating from the pair of fixed contacts, and an insulating cylinder in a bottomed tubular shape disposed on an inner peripheral surface of the contact housing case to enclose the pair of fixed contacts and the movable contact. The insulating cylinder positions an arc extinguishing permanent magnet for extinguishing an arc generated between the pair of fixed contacts and the movable contact. A magnet housing portion to protect the arc extinguishing permanent magnet from the arc is formed on an inner peripheral surface of the insulating cylinder and faces a side surface of the movable contact. An arc extinguishing space is formed on an outer side of the magnet housing portion in an extending direction of the movable contact.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: June 10, 2014
    Assignees: Fuji Electric Co., Ltd., Fuji Electric FA Components & Systems Co., Ltd.
    Inventors: Osamu Kashimura, Masaru Isozaki, Hiroyuki Tachikawa, Kouetsu Takaya, Yasuhiro Naka, Yuji Shiba
  • Patent number: 8742278
    Abstract: A switchgear device, for breaking a bidirectional direct current in an electric line, having at least two connection terminals, and an even number of pairs of separable contacts, arc chutes associated with pairs of separable contacts, and tripping mechanisms associated with pairs of separable contacts and connected to one another by a mechanical link, each arc chute having an arc extinguishing chamber and permanent magnets for creating a polarity enabling an electric arc to be removed to an arc extinguishing chamber when current is flowing in the electric line in a predefined direction, the predefined direction being different for one half of the arc chutes.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 3, 2014
    Assignee: Schneider Electric Industries SAS
    Inventors: Eric Domejean, Serge Paggi
  • 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: 8717128
    Abstract: An electromagnetic relay includes multiple contact sets each including a fixed contact and a movable contact displaceable in a first direction to approach the fixed contact and in a second direction to move away from the fixed contact; multiple permanent magnets each provided on the peripheral side of a corresponding one of the contact sets and having a polarity direction perpendicular to the first and second directions; and multiple ferromagnetic bodies parallel to the polarity directions of the permanent magnets and the first and second directions, wherein in a DC electric current flowing through each of the contact sets, the direction of a force exerted based on the permanent magnet is equal to the direction of a force exerted based on the ferromagnetic body.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: May 6, 2014
    Assignee: Fujitsu Component Limited
    Inventors: Ryuji Sasaki, Takashi Yuba
  • Publication number: 20140104018
    Abstract: An electromagnetic contactor has a base plate having an aperture hole; an arc extinguishing chamber including a fixed terminal having a vent portion and a pipe obliquely inserted from outside a wall surface and connecting the vent portion; and a bottomed tubular cap in which one end thereof is open. An arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a tube portion connected to the arc extinguishing chamber and a flange portion contacting with the base plate. A cap connection portion is formed by the cap and a second connection member having a tube portion connected to the cap and a flange portion connected to the base plate. The arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicants: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD., FUJI ELECTRIC CO., LTD
    Inventors: Seiji IMAMURA, Kouichi OKAMOTO, Taku OGAWA, Yuichi YAMAMOTO, Kouetsu TAKAYA
  • Publication number: 20140104019
    Abstract: An electromagnetic contactor includes a base plate having an aperture hole; an arc extinguishing chamber formed by a fixed terminal support insulating substrate and a cylinder portion; and a bottomed tubular cap in which one end thereof is open. An arc extinguishing chamber connection portion is formed by the arc extinguishing chamber and a first connection member having a flange portion. A cap connection portion is formed by the cap and a second connection member having a tube portion and a flange portion. The flange portion of the first connection member is attached to one surface of the base plate, and the flange portion of the second connection member is attached to the other surface of the base plate, so that the arc extinguishing chamber connection portion and the cap connection portion are in communication through the aperture hole of the base plate.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Applicants: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD., FUJI ELECTRIC CO., LTD
    Inventors: Seiji IMAMURA, Kouichi OKAMOTO, Taku OGAWA, Yuichi YAMAMOTO, Kouetsu TAKAYA
  • Patent number: 8698023
    Abstract: An embodiment of the invention relates to an electrical switch having a basic enclosure with an enclosure top side, an enclosure underside and at least one lateral connection side at which at least one connection contact disposed inside the enclosure of the switch is accessible for the purpose of effecting an electrical connection from outside, and a terminal cover which closes off the connection side laterally at least in sections.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: April 15, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jan Grünwald
  • Publication number: 20140062625
    Abstract: An electromagnetic contactor has a pair of fixed contacts disposed maintaining a predetermined interval and a movable contact disposed to be capable of connecting to and separating from the pair of fixed contacts; and an electromagnet unit that drives the movable contact. The electromagnet unit includes a magnetic yoke enclosing a plunger drive portion; a movable plunger in which a leading end is protruding through an aperture formed in the magnetic yoke, and urged by a return spring; and an annular permanent magnet enclosing a peripheral flange portion formed on a protruding end side of the movable plunger, and magnetized in a moving direction of the movable plunger.
    Type: Application
    Filed: April 3, 2012
    Publication date: March 6, 2014
    Applicants: FUJI ELECTRIC CO., LTD., FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.
    Inventors: Yasuhiro Naka, Kouetsu Takaya, Kenji Suzuki, Hiroyuki Tachikawa
  • Patent number: 8659372
    Abstract: An electromagnetic relay includes an electromagnet that generates a magnetic field when electric current is supplied thereto, an actuator that is actuated in response to the generated magnetic field, a contact that opens and closes in response to the actuation of the actuator, the contact including a first contact and a second contact that contacts with the first contact when the contact closes, and a housing including a first housing that includes walls defining a recess that accommodates the electromagnet, the actuator and the contact therein, and a second housing that is fixed to the first housing and covers the recess of the first housing. The electromagnetic relay also includes a permanent magnet provided on an outer surface of the housing at a position corresponding to a position of the contact.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: February 25, 2014
    Assignee: Fujitsu Component Limited
    Inventor: Masato Morimura
  • Patent number: 8653917
    Abstract: A contact device includes a pair of fixed contactors fixed to one side of an insulation container with a predetermined space therebetween and having a columnar shape with a tip end contact surface protruding at lease inside the insulation container, and a movable contactor disposed to be capable of contacting with and separating from the pair of fixed contactors. Surfaces of the pair of fixed contactors facing the movable contactor are formed of annular peripheral walls having a concave part at a center thereof. An annular arc is formed between the annular peripheral wall and the movable contactor when the contact device is in an open state.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: February 18, 2014
    Assignees: Fuji Electric FA Components & Systems Co., Ltd., Fuji Electric Co., Ltd.
    Inventors: Kouetsu Takaya, Kenji Suzuki, Yasuhiro Naka
  • Patent number: 8642913
    Abstract: A venting assembly is provided for an arc chute of an electrical switching apparatus, such as a circuit breaker. The circuit breaker includes a housing and separable contacts. An arc and ionized gases are generated in response to the separable contacts tripping open. The arc chute includes a plurality of arc splitters each having first and second opposing sides, an interior passage, and an exterior. The venting assembly includes a first portion coupled to the first side of at least one of the arc splitters and including a venting segment with first venting apertures. A second portion is coupled to the second side and includes a second venting segment having second venting apertures. The first and second venting segments are spaced from the exterior of the arc splitters to form first and second cooling chambers for cooling the ionized gases. The first and second venting apertures vent the ionized gases.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 4, 2014
    Assignee: Eaton Corporation
    Inventor: James Gerard Maloney
  • Publication number: 20140028418
    Abstract: An electromagnetic relay including a contact switching unit formed by arranging at least two contact groups, in parallel with each other and perpendicular to the touch/separation direction of the contacts, each of the contact group includes a pair of contacts that can touch and separate; an electromagnet block that drives the contact switching unit to open and close the contacts; and an arc-extinguishing member comprising a connection member made from a magnetic material and formed by a connection of protrusions that respectively protrude from both sides of a middle part in the direction of the parallel arrangement of the contact groups and between the contact groups, and also comprising permanent magnets respectively disposed at least on the opposing positions of the protrusions located on both sides of the middle part.
    Type: Application
    Filed: March 24, 2011
    Publication date: January 30, 2014
    Applicant: OMRON CORPORATION
    Inventors: Tsukasa Yamashita, Tetsuo Shinkai, Yasuyuki Masui
  • Patent number: 8638184
    Abstract: An arc chute for a DC circuit breaker is disclosed which includes at least one stack of a plurality of substantially parallel metal plates, the at least one stack defining a first axis A in parallel to a stacking direction; an arc space adapted to allow an arc to extend along the first axis, wherein a second axis traversing in parallel to the metal plates the at least one stack and the arc space substantially orthogonal to the first axis. Further, an arc-chute housing having at least one side wall, the at least one side wall being substantially parallel to the second axis, wherein the distance between the at least one sidewall and the metal plates is, for example, less than 5 mm, such as less than 2 mm.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: January 28, 2014
    Assignee: ABB Technology AG
    Inventors: Philippe Noisette, Yoann Alphand, Marc Blanc
  • Publication number: 20140022035
    Abstract: The present invention provides an electromagnetic relay, comprising a contact switching unit having a contact group which includes a pair of contacts in order to touch and separate; an electromagnet block which drives the contact switching unit to open and close the contacts; and an arc-extinguishing member having a connection member and permanent magnets, wherein the connection member is formed by connecting, via a middle part, opposing walls arranged in a direction perpendicular to the touch/separation direction of the contacts and permanent magnets are disposed on the opposing sections of the opposing walls.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 23, 2014
    Applicant: OMRON CORPORATION
    Inventors: Tsukasa Yamashita, Tetsuo Shinkai, Yasuyuki Masui, Masayuki Noda