Operating Mechanism Structure Or Arrangement Patents (Class 218/84)
  • Patent number: 11361922
    Abstract: A breaker includes a tank, first to third fixed contacts provided inside the tank, first to third movable contacts that are provided inside the tank and are movable, and first to third operation devices provided outside the tank to move the first to third movable, respectively. The first to third operation devices respectively include first to third torsion bars serving as a driving source to move the first to third movable contacts, respectively.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: June 14, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuichi Tanigaki, Satoru Maeno, Daisuke Fujita
  • Patent number: 10886076
    Abstract: A device for switching medium and/or high voltages has a spring-loaded drive for driving a kinematic chain. At least one energy storage spring and at least one damping element for generating a drive movement with specific drive characteristics are included. The at least one damping element is an active damping element. The damping is actively determined during switching or it is predetermined, in particular depending on environmental variables and/or the type of switching situation, by changing the settings of the at least one damping element.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: January 5, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henry Jenichen
  • Patent number: 10176946
    Abstract: The invention relates to a drive device for an electrical switching device, in particular for a high-voltage switch, having a housing which can be filled with insulating gas, having an energy storage device which is arranged in the housing and has a spring and a stop against which the spring can be tensioned. According to the invention, an adjustment device which can be actuated from the exterior of the housing is provided, by means of which adjustment device a position of the stop in the housing can be adjusted along an axis.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: January 8, 2019
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Gerrit Boehm, Achim Stelter
  • Patent number: 10014670
    Abstract: An electrical apparatus containing an adsorbent, includes a housing, an adsorbent cover, an adsorbent and a locating bolt. The housing is cylindrical and has at least one locating hole. The adsorbent cover is installed in the housing, and has an annular groove in a circumferential direction, with the locating hole being opposite the groove. An outer diameter of a groove edge is the same as an inner diameter of the housing, while the diameter of a middle part of the groove is less than the inner diameter of the housing. The adsorbent is placed in the groove. The locating bolt passes through the locating hole and extends into the groove. The electrical apparatus has a simple structure. Since installation on a flange is not needed, a flange on the housing that is connected to an adsorbent container is dispensed with. The cost of the adsorbent container and housing are reduced.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: July 3, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Qiang Liu, Jun Wang
  • Patent number: 9953778
    Abstract: A gas circuit breaker includes a breaking unit tank incorporating a fixed electrode and a movable electrode, a spring operation device including a breaking spring and a closing spring and configured to move the movable electrode, and a mechanism unit configured to couple the movable electrode side and the spring operation device side and transmit power received from the spring operation device to the movable electrode. The spring operation device is supported by a frame. The frame is fixed to a rear plate provided in a mechanism unit frame of the mechanism unit. A breaking spring case and a closing spring case of the spring operation device are fixed to pedestals via a plate member 38 and a support section 7.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: April 24, 2018
    Assignee: HITACHI LTD.
    Inventors: Hiroaki Hashimoto, Takashi Iida, Shunta Mori, Kenichi Okubo
  • Patent number: 9685288
    Abstract: A connection piece is disclosed for a switch pole of a switching apparatus which improves the properties of the switch pole as concerns centering and current-carrying capacity. According to an embodiment of the invention, a connection piece for a switch pole of a switching apparatus is provided for connecting in electrically conductive manner to a movement contact connection pin of a vacuum switching tube disposed in the switch pole. The connection piece includes a centering ring for centering the vacuum switching tube, the centering ring being formed from an electrically conductive material and being connected in electrically conductive manner via at least one connector to a connection region of the connection piece.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: June 20, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainer Melchior, Fabian Roehrig, Unni Suresh
  • Patent number: 9685280
    Abstract: An operating mechanism for a switchgear unit is disclosed. The operating unit includes an input drive shaft operable to rotate and counter-rotate. A trip linkage has a cam disk rotatably coupled to the input drive shaft and is coupled to a spring-drive mechanism for opening and closing the vacuum interrupter. An over-center linkage has a drive link rotatably coupled to the input drive shaft, and a follower link for opening and closing the isolating disconnect. Rotation of the input drive shaft through a first range drives the trip linkage for opening the vacuum interrupter and moves the drive link though an over-center position without opening the isolating disconnect. Rotation of the input drive shaft though a second range drives the over-center linkage for opening the isolating disconnect after the vacuum interrupter is opened.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: June 20, 2017
    Assignee: S&C ELECTRIC COMPANY
    Inventors: Keith W. Benson, Henry W. Kowalyshen, Xin Zhu
  • Patent number: 9659727
    Abstract: A switch capable of easily accomplishing current cutoff roles required for a high-voltage switch, and which has a short breaking time. The switch includes pressure housings filled with an insulative medium, a plurality of contactors each including a contact, a plurality of operation units actuating the contacts, an insulative spacer dividing the interiors of the pressure housings into the same number of internal spaces as the number of contacts, and an electrode passing completely through the insulative spacer and fastened to the insulative spacer. The contactor is provided one by one for each internal space, and all contacts are electrically connected in series via the electrode, and the operation units actuate the corresponding contacts, respectively.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: May 23, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuhisa Kanaya, Yoshiaki Ohda, Tadashi Koshizuka, Masayuki Sato, Yuki Matsui
  • Patent number: 9163749
    Abstract: A valve controller includes a housing, and a lever extending from the housing. The lever includes a protrusion rigidly attached to the lever, and the lever is biased to an initial position. A switch has an open and a closed position. A linkage is pivotally connected to the switch, and the linkage includes a centrally disposed slot configured to receive the protrusion such that movement of the switch controls movement of the linkage and the lever such that moving the switch to the closed position closes a valve controlled by the lever regardless of a position of the lever.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: October 20, 2015
    Assignee: KYPHON SARL
    Inventor: Brian Donovan
  • Patent number: 9091332
    Abstract: Drive structure is provided for connection between an actuating assembly of a circuit breaker and linkage structure for opening and closing a movable electrical contact disposed in a volume of insulating material in a pole assembly. The drive structure includes a drive lever constructed and arranged to connect with the at least one actuating assembly. A drive shaft has first and second ends, with the first end being removably coupled to the drive lever so that rotation of the drive shaft rotates the drive lever. Seal structure is disposed between the drive lever and the actuating assembly such that the drive shaft can be removed from the drive lever without disrupting the volume of insulating material.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: July 28, 2015
    Assignee: ABB Technology AG
    Inventors: Jonathan Fuge, Beth Dahm, Matthew Cuppett
  • Patent number: 9077161
    Abstract: An electric power switch suitable as a capacitor, line and load switch for transmission and distribution voltages includes an external actuator controlled by current transformers (CTs) mounted on live tanks comprising insulators forming dielectric containers that house the contactors of the switch. The CTs are located on the outside of the insulators in the regions of the insulators overlying the internal contactors between the upper and lower high voltage line taps. The actuator and controller may also be located outside the dielectric container, as desired. This configuration minimizes the size of the dielectric container and removes the severe size constraint inherent in design conventional “live tank” switch designs, while also avoiding the need for separate line-mounted CTs. This design also avoids the need for a separate grounded “dead tank” to house the CTs, which are more conveniently located in the outside of the insulators.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: July 7, 2015
    Assignee: SOUTHERN STATES LLC
    Inventor: Joseph R. Rostron
  • Patent number: 8963039
    Abstract: A gas circuit breaker includes movable and fixed electrode parts arranged to face each other in an engaging/separating manner in a container filled with an insulating gas, an operating mechanism attached to a partition of the container and configured to output an operating force to the movable electrode part, an operating rod attached to the movable electrode part, a first link rotatably attached to the operating rod, a lever rotatably attached to the first link, a support bearing fixed to the partition of the container via an insulating spacer, a second link rotatably attached to the lever and also rotatably attached to the support bearing, a seal bearing connected through the partition of the container, a seal rod rotatably attached to the center of the lever and slidably supported to the seal bearing, and a third link rotatably attached to the seal rod and also attached to the operating mechanism.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: February 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiaki Ohda, Akira Shimamura, Ryusuke Ochiai, Satoshi Marushima
  • Patent number: 8952285
    Abstract: An electric switch for application to high- and very high-voltage circuit breakers and switches comprising a flexible toroidal helical spring (8) placed in a groove of a control rod (1) carrying a movable resistance-insertion contact (2), and springs (4) placed about the movable resistance-insertion contact to cause the springs to be compressed until a certain value is reached, at which value the movable resistance-insertion contact causes the flexible toroidal helical spring (8) to deform under pressure enabling the movable resistance-insertion contact (2) to be withdrawn. Among other uses, the switch is suitable for use in a resistance-inserting device that does not need additional mechanical moving parts. For application to high- and very high-voltage circuit breakers and switches.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: February 10, 2015
    Assignee: Alstom Technology Ltd.
    Inventors: André Cimala, Gwenaël Marquezin
  • Patent number: 8885327
    Abstract: A switchgear having an electrified conductor accommodated in a tank in which insulating gas is contained includes a fixed contact connected to the electrified conductor, a movable contact installed to be contactable and separable to and from the fixed contact, an insulating rod that is externally extended from inside of the tank while being electrically insulated from the tank and turned by an operation device, and an insert that is extended from an end of the insulating rod toward the movable contact and is rotatably supported by a holding part installed in the electrified conductor. A flange part that is installed in the insert at a position where the holding part opposes the insulating rod and is extended in a substantially right-angle direction with respect to a direction of a rotation axis of the insulating rod is formed on the insert.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masato Kawahigashi, Takashi Harada
  • Publication number: 20140190939
    Abstract: A gas insulated switchgear includes: an enclosure; a stationary contact arm fixedly installed within the enclosure; a movable contact arm installed to be moved within the enclosure such that it is brought into contact with or separated from the stationary contact arm; a cam reciprocating between closing and opening positions to move the movable contact arm; and an actuator moving the cam, wherein the cam includes first and second cam surfaces, and when the cam moves to an opening position by the actuator, movement acceleration of the movable contact arm by the first cam surface is greater than movement acceleration by the second cam surface and a movement distance of the movable contact arm by the first cam surface is smaller than a movement distance by the second cam surface.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 10, 2014
    Applicant: LSIS CO., LTD.
    Inventor: Jae Min YANG
  • Publication number: 20140144883
    Abstract: A gas circuit breaker includes a circuit-breaking portion provided within a tank. The tank is filled with insulating gas and disposed in an upright position. The circuit-breaking portion is connected to a bus through a main circuit conductor. The circuit-breaking portion has an operation unit disposed outside the tank. The operation unit is an electric linear motor operation unit composed of a driving portion and a driving energy storage portion. The driving portion is adjacent to the tank. The driving energy storage portion is separated from the driving portion. The driving energy storage portion and the driving portion are electrically connected.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 29, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Hisashi URASAKI, Masanori TSUKUSHI
  • Patent number: 8674253
    Abstract: According to an embodiment, a gas insulation apparatus (e.g., a gas circuit breaker) includes a high-voltage unit, a zeolite and an insulation gas in a closed vessel. The insulation gas is CO2 gas or a gas including CO2 gas as the main component. The zeolite is contained in a zeolite case and is placed under an insulation gas atmosphere. CO2 is adsorbed on the zeolite before use of the gas insulation apparatus.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: March 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiyuki Uchii, Amane Majima, Toshiyuki Nakano, Yoshihiko Hirano, Akira Shimamura, Yoshikazu Hoshina
  • Publication number: 20130284703
    Abstract: A mechanical-puffer-type arc-extinguishing chamber includes a fixed main contact, a movable main contact that moves on an opening-and-closing axis in a connectable and disconnectable manner to and from the fixed main contact, and a mechanical puffer chamber that is provided in the movable main contact and blows compressed insulation gas to an arc. A thermal-puffer-type arc-extinguishing chamber includes a fixed contact, a movable contact that moves on the opening-and-closing axis in a connectable and disconnectable manner to and from the fixed contact, and a thermal puffer chamber in which compressed insulation gas is blown to the arc. The mechanical-puffer-type arc-extinguishing chamber and the thermal-puffer-type arc-extinguishing chamber are arranged in series on the opening-and-closing axis, and two breaking portions are electrically connected in series.
    Type: Application
    Filed: May 17, 2011
    Publication date: October 31, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji Yoshitomo, Toru Yamashita, Daisuke Yoshida
  • Patent number: 8487203
    Abstract: Operating shaft 4 allows disconnecting switch-side and earthing switch-side moving contacts 7a and 7b to linearly reciprocate with the rotation of operating shaft 4. Operating shaft 4 has two-hole lever 5 allow an arc motion. Each one end of two curved links 6a and 6b is connected to two-hole lever 5 and the other end of two curved links 6a and 6b is respectively connected to the disconnecting switch-side moving contact or the earthing switch-side moving contact. When the two connecting points are axisymmetric with respect to the bisector, both the disconnecting switch and the earthing switch are in an open state; when two-hole lever 5 moves at a predetermined angle to the disconnecting switch-side, the disconnecting switch is in a closed state; and when two-hole lever 5 moves at a predetermined angle to the earthing switch-side, the earthing switch is in a closed state.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: July 16, 2013
    Assignee: Japan AE Power Systems Corporation
    Inventors: Taeyong Shin, Kyuji Yaginuma
  • Patent number: 8013268
    Abstract: This invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having two contacts (3, 4), each contact (3, 4) including a main contact (30, 40 respectively) and an arcing contact (31, 41 respectively), with one of the two contacts (3) being fixed to a blast or extinguishing nozzle (32). According to the invention, the second contact (4) and the drive bar (70) are joined together by coupling means (6) in such a way that they move together in translation in the same direction, the transmission means (5) being disposed on the side (21) of the chamber (2) that is adjacent to the drive bar (70), and are adapted to transmit the motion of the driven second contact (4) to the first contact (3).
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: September 6, 2011
    Assignee: Areva T&D SA
    Inventors: Joël Ozil, Christophe Creusot, Jean-Luc Bourgeois, Christian Lindner
  • Patent number: 7764486
    Abstract: A gas-insulated power apparatus comprising a vertically arranged gas-insulated circuit breaker included in a vertically arranged gas-insulated main tank, a first gas-insulated branch pipe connected to one side of an upper portion of the gas-insulated main tank substantially orthogonal to a direction of extending the gas-insulated main tank and leading out a feeder from a movable side of the gas-insulated circuit breaker, and a second and a third gas-insulated branch pipes which are respectively connected to both sides in a peripheral direction of a lower portion of the gas-insulated main tank substantially orthogonal to the direction of extending the gas-insulated main tank, one of which connects a fixed side of the gas-insulated circuit breaker to one gas-insulated Y bus of gas-insulated double buses and other of which connects the fixed side of the gas-insulated circuit breaker to other gas-insulated X bus of the gas-insulated double buses, respectively, by which a gas-insulated power apparatus having a str
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: July 27, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Otsuka, Hitoshi Sadakuni, Daisuke Fujita
  • Patent number: 7759595
    Abstract: A gas insulating switchgear equipped with a grounding switchgear of the invention includes a sealing vessel that fills an insulation gas, a main circuit-switching fixed electrode that is fixed to the sealing vessel, a movable electrode that comes in contact with the main circuit-switching fixed electrode, a grounding-switching fixed electrode capable of conducting current, and a driving device that drives the movable electrode, thereby driving the movable electrode. The main circuit-switching fixed electrode and the grounding-switching fixed electrode are linearly arranged in a longitudinal direction of the movable electrode, and the driving device drives linearly the movable electrode to three positions of a closed-circuit position, an open-circuit position, and a grounding position, and holds the movable electrode.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: July 20, 2010
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Yoichiro Yoshitake, Dai Harada
  • Patent number: 7612309
    Abstract: A buffering mechanism for a gas circuit breaker includes a center piece which includes two protrusions extending from two ends thereof and two match surfaces are defined in two opposite sides of the center piece. Two side boards each have a pivot hole and a slot defined therethrough, the two protrusions of each end of the center piece are pivotably engaged with the pivot hole and the slot respectively. A plurality of impact plates are engaged with the two match surfaces of the center piece. When the impact plates are hit by the two links of the Y-shaped link mechanism of the gas circuit breaker at different times, the center piece is pivoted along the slots to absorb impact forces from the two links.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: November 3, 2009
    Assignee: Chung-Hsin Electric & Machinery Mfg. Corp.
    Inventors: Chang-Ching Chung, Ming-Sheng Huang
  • Patent number: 7579570
    Abstract: A high-voltage outdoor bushing configuration includes an electrically insulating casing and an electrically conductive housing. An isolating gap is located inside the electrically conductive housing. The isolating gap interrupts a phase conductor into first and second sections. A switching piece or an element of a multi-part switching piece can be moved at an angle relative to an axis along which the phase conductor extends.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: August 25, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Bauch, Manfred Meinherz, Eckard Wagner
  • Patent number: 7566842
    Abstract: The switching chamber for a heavy-duty circuit breaker has a first arcing contact piece, a second arcing contact piece, a heating chamber, and an insulating nozzle. The first or second arcing contact piece can be moved by means of a drive. The heating chamber is used for temporarily storing quenching gas heated by an arc that may burn between the contact pieces. An insulating nozzle has a throat that is connected to the heating chamber, and which is used for guiding a quenching gas flow. During an opening operation, the two arcing contact pieces reach a maximum relative speed that is at least 1.3 times as great as a relative speed of the two arcing contact pieces. The relative speed being required for capacitive switching.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: July 28, 2009
    Assignee: ABB Technology AG
    Inventors: Olaf Hunger, Max Claessens, Martin Holstein, Johan Abrahamsson, Martin Kriegel
  • Publication number: 20090120910
    Abstract: An interrupter unit of an electrical switching device has a flow-conducting body. Gases which are flowing away are guided by way of the flow-conducting body. The flow-conducting body is formed at least from a first and a second element, wherein a joint gap is formed between the two elements. The joint gap has a section, which is formed with a complementary shape between the two elements so as to form a labyrinth structure.
    Type: Application
    Filed: March 30, 2007
    Publication date: May 14, 2009
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Chyla, Volker Lehmann
  • Patent number: 7507932
    Abstract: The heavy-duty circuit breaker contains a first moveable arcing contact piece and a second moveable arcing contact piece as well as an auxiliary drive for driving the second arcing contact piece. An arc may burn between the arcing contact pieces. The heavy-duty circuit breaker has a heating chamber for temporarily storing quenching gas heated by the arc and a throat for guiding a quenching gas flow, which throat is connected to the heating chamber by a channel. The throat can be blocked by one of the two arcing contact pieces, which is the blocking contact piece. The auxiliary drive is designed such that, during an opening operation, a movement direction reversal of the second arcing contact piece from a movement in opposite directions to a movement in the same direction of the two arcing contact pieces takes place, if the throat is no longer blocked by the blocking contact piece.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: March 24, 2009
    Assignee: ABB Technology AG
    Inventors: Olaf Hunger, Max Claessens, Martin Holstein, Johan Abrahamsson, Martin Kriegel
  • Publication number: 20080257866
    Abstract: This invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having two contacts (3, 4), each contact (3, 4) including a main contact (30, 40 respectively) and an arcing contact (31, 41 respectively), with one of the two contacts (3) being fixed to a blast or extinguishing nozzle (32). According to the invention, the second contact (4) and the drive bar (70) are joined together by coupling means (6) in such a way that they move together in translation in the same direction, the transmission means (5) being disposed on the side (21) of the chamber (2) that is adjacent to the drive bar (70), and are adapted to transmit the motion of the driven second contact (4) to the first contact (3).
    Type: Application
    Filed: April 14, 2008
    Publication date: October 23, 2008
    Applicant: Tour AREVA
    Inventors: Joel Ozil, Christophe Creusot, Jean-Luc Bourgeois, Christian Lindner
  • Patent number: 7343137
    Abstract: The invention relates to a circuit comprising an antenna input (1), a signal input (2) and a signal output (3), and a switching unit (4), wherein the antenna input (1) is connected to a first protection device (6) against electrostatic discharges, said first protection device (6) being a band-pass filter in a ?-configuration. The advantage of the first protection device (6) is that it eliminates the need for a band-pass filter in the front end module, when used in a mobile telephone. Furthermore, the band-pass filter has a very good filtering characteristic, enabling ESD-related disturbances to be effectively suppressed. The invention also relates to a switching module and to the use of the same.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 11, 2008
  • Patent number: 6927355
    Abstract: The invention relates to a circuit breaker, preferably for high or medium voltage. The movable conact of each breaker pole is connected, via mechanical means for transmitting movement, to a movable part of an electric motor (6). The movable contact and the means for transmitting movement are arranged in a gas-tight apparatus chamber (31) surrounded by a gas-tight apparatus housing (9) of insulating material such as porcelain. In accordance with the invention the motor (6) is arranged entirely in the apparatus chamber (31). The invention also relates to an electric plant provided with the breaker claimed, uses of the breaker claimed and a method of breaking electric current in which the breaker claimed is used.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: August 9, 2005
    Assignee: ABB AB
    Inventors: Per Olof Thuresson, Lars Hermansson, Tomas Roininen, Stefan Valdermarsson
  • Patent number: 6818850
    Abstract: A disconnect apparatus for electrical power lines comprises a circuit interrupter having a fixed contact and a moveable contact. A linkage mechanism has first and second coupling elements. The second coupling element is secured to the moveable contact for operating the circuit interrupter. A drive mechanism has an output coupling element. An insulator assemble operatively connects the output coupling element to the linkage mechanism first coupling element. The insulator assembly comprises an insulator having a through bore. An insulator rod extends through the bore and is connected between the output coupling element and the linkage mechanism first coupling element. A dielectric seal is located between the insulator and the insulating rod.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: November 16, 2004
    Assignee: Bridges Electric, Inc.
    Inventor: Ronald P. Bridges
  • Patent number: 6815629
    Abstract: In a hydraulic pressure actuating apparatus for a circuit breaker, contacts of the circuit breaker have a moving contact and a stationary contact for turning on/off current. A shaft, at an end portion of which is attached the moving contact, and at the other end of which is attached a piston, is received within a cylinder. A directional control valve exchanges oil pressure for actuating the piston. For changing over the directional control valve, pilot valves are provided. Each pilot valve has a pair of valve bodies, each opposing to each other, and springs. One of the valve bodies is able to stroke up to contact with the valve body of the other valve body, therefore giving no ill influences upon actuating time, even if drawback occurs in the pilot valves in the hydraulic pressure actuating apparatus for the circuit breaker.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: November 9, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Shinji Seto, Yasuhide Takeda, Daisuke Ebisawa, Masayuki Uchiyama, Atsuji Watanabe, Hideo Kawamoto
  • Patent number: 6762387
    Abstract: A gas-insulated switch equipped with a fixed contact and a moving contact that can contact with and separate from the fixed contact, wherein a single shock absorber absorbs the shock in both the breaking action and the closing action of the moving contact.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: July 13, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Kawamoto, Kenichi Okubo, Tetsu Ishiguro
  • Patent number: 6747232
    Abstract: In a vacuum contactor, the armature is initially deflected from an armature rest position through an initial movement distance, and then through a driving movement distance to an armature operating position when a pull-in current is applied to a drive coil. An operating element is deflected from an element rest position to an element operating position by the armature only while the latter is passing through the driving movement distance. This makes it possible to achieve a good tripping characteristic of the vacuum contractor.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: June 8, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johann Drexler, Markus Kropp, Bardo Koppmann, Markus Meier, Norbert Mitlmeier
  • Patent number: 6717088
    Abstract: A gas-insulated switch equipped with a fixed contact and a moving contact that can contact with and separate from the fixed contact, wherein a single shock absorber absorbs the shock in both the breaking action and the closing action of the moving contact.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: April 6, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Kawamoto, Kenichi Okubo, Tetsu Ishiguro
  • Patent number: 6649853
    Abstract: The present invention provides a switchgear, which can achieve miniaturization and simplification while securing high operation reliability, and excellent in assembly, operability and inspection, and further, has a compact size. A fluid pressure operating section is provided in a mechanical box arranged on a lower end portion of a support porcelain tube. Insulated operating rods are received in the support porcelain tube, and connecting mechanisms are received in a container. Switching contacts of circuit breaker and disconnecting switches and the fluid pressure operating section are connected via the connecting mechanisms and the insulated operating rods.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: November 18, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirokazu Takagi, Yoshikata Kobayashi, Fumio Nakajima, Tsutomu Tanaka, Masaharu Shimizu, Akio Kobayashi, Hiroshi Furuta
  • Publication number: 20030015499
    Abstract: To reduce the size of a gas-insulated switch for the purpose of utilizing the space of a power station or substation effectively and improving the economy thereof. A gas-insulated switch equipped with a fixed contact and a moving contact that can contact with and separate from the fixed contact, wherein the breakage of the moving contact is operated with a single shock absorber in both the breaking action and the closing action of the moving contact. As a result that use of the gas-insulated switch according to the present invention improves the overall energy efficiency of components, a device with further reduced driving energy can be realized for a gas-insulated switch of the same specification.
    Type: Application
    Filed: April 8, 2002
    Publication date: January 23, 2003
    Inventors: Hideo Kawamoto, Kenichi Okubo, Tetsu Ishiguro
  • Patent number: 6486420
    Abstract: Disconnector contact drive devices for switchgear for power supply and distribution are described, in particular for air-insulated medium-voltage switchgear, having movable pole units. In where in a first movement sequence, the disconnector contacts are separated from fixed mating contacts of the switchgear. In a second movement sequence, the pole units are displaceable to achieve the isolating distance, and the disconnect contacts are moved to disconnect them by force components acting in the x/y directions. The disconnector contact drive devices are equipped with linear guide shafts. The pole units contain pole box frames which are linearly movable along the guide shafts from an ON position stop to an OFF position stop due to the forces acting on the toggles. The toggles each have four pivot bearings.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: November 26, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Boettcher, Marcus Kampf
  • Patent number: 6429394
    Abstract: The power breaker is provided with at least one arcing chamber (2) which is filled with SF6 gas, is rotationally symmetrical, and extends along a longitudinal axis (3). The arcing chamber (2) has a power current path with a central contact pin (14), and has a separate rated current path provided with rated current contacts (11). The arcing chamber (2) is operated by a drive linkage (4) which moves the contact pin (14) and the rated current contacts (11). The drive linkage (4) is designed such that, at the start of the disconnection process, the contact pin (14) remains in a first dead point position until the rated current path is interrupted. The contact pin (14) can then be moved in the disconnection direction at a considerably higher speed than the rated current contacts (11). Toward the end of their disconnection travel, the rated current contacts (11) run into a second dead point position.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: August 6, 2002
    Assignee: ABB Schweiz AG
    Inventors: Olaf Hunger, Lukas Zehnder, Luc Rieffel
  • Patent number: 6410873
    Abstract: In a high-voltage power breaker having two mutually opposite switching contacts which, when connected are surrounded by an insulating material nozzle, coaxially with respect to which a shielding electrode is arranged, with a first switching contact, which can be driven, being connected via the insulating material nozzle and a linkage to the second switching contact, such that said switching contact carries out a movement in the opposite direction to the first switching contact during operation of the latter, the shielding electrode is operatively connected to the second switching contact such that, during disconnection, it carries out a movement which controls the electric field in the switching gap.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 25, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Chyla, Peter Stenzel
  • Patent number: 6396018
    Abstract: There are provided an operating mechanism that drives the opening/closing of contacts, and a sliding conduction part that forms electrical connection of these contacts and the main circuit on receipt of a connection voltage; grease is applied to the mechanical sliding part of the operating mechanism and to the sliding conduction part. The grease has as base oil at least one synthetic oil and is selected from the group consisting of poly &agr;-olefins and dialkyl diphenyl ethers, and contains as thickener 5-30 mass % of a urea compound. The dynamic viscosity of the base oil is 30-500 mm2/s at 40° C.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: May 28, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirotsugu Kinoshita, Kiyomi Sakamoto, Kimiya Sato, Makoto Kataoka, Atsushi Ohashi, Tomio Takahashi
  • Patent number: 6365863
    Abstract: In a high voltage circuit breaker having a contact system comprising a contact driven by a switch mechanism and a counter-contact opposite the contact and driven by an auxiliary gear, the parallel current path leading over the auxiliary gear is interrupted by using an insulation part between the counter-contact and a second terminal of the high voltage circuit breaker.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: April 2, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heiner Marin, Volker Lehmann, Hold Dienemann, Thomas Chyla
  • Patent number: 6316742
    Abstract: An actuator mechanism that decreases the time needed to move the contacts of a circuit interrupter between a closed circuit position and an open circuit position to reduce the probability of the occurrence of restrikes. The actuator mechanism uses a toggle spring arrangement that uses a single spring to move the interrupter through both an opening stroke and a closing stroke. The interrupter is designed to connect to the circuit in parallel, so that the interrupter is not normally in the circuit when the circuit is closed. Because the interrupter is not normally in the circuit, it can be manufactured to less stringent standards than those that apply to electrical components that normally remain in the circuit. The interrupter is well adapted for use as a puffer-type interrupter in which the contacts of the interrupter are contained in an arc-extinguishing gas, such as sulphur-hexaflouride (SF6) gas to further reduce the probability of restrikes and to minimize the effect of occurring restrikes.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: November 13, 2001
    Assignee: Southern States, Inc.
    Inventors: Joseph R. Rostron, Cary J. Ahrano, Brian J. Berner
  • Patent number: 6271494
    Abstract: A high-voltage circuit breaker is described having arcing contacts, which can be driven in opposite directions, as well as corner gears that are coupled, via a driving rod, with the driven insulating nozzle surrounding the arcing contacts, with the corner gears being designed as a lever mechanism using a two-armed control lever. The one end of the control lever is shaped like a fork, with a journal that is attached to the driving rod engaging with this end. The other end of the control lever is coupled, via a reciprocating element, with the head piece of the second arcing contact, which is driven in the opposite direction.
    Type: Grant
    Filed: June 24, 2000
    Date of Patent: August 7, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hold Dienemann, Volker Lehmann, Heiner Marin
  • Patent number: 6229109
    Abstract: A contact pin is operationally connected through racks and pinions to a movable mating contact arrangement in such a way that it executes a movement counter thereto. Through two spokes through which the racks are guided, it bears a contact ring which surrounds it coaxially at a distance and preferably has a radius which is four to eight times as large. In a groove on its outer side, the contact ring bears a circumferential spiral contact which forms with the inner side of a contact tube, which finishes in a fixed nominal-current contact, a sliding contact arrangement having good current transfer in conjunction with a short length.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: May 8, 2001
    Assignee: Asea Brown Boveri AG
    Inventors: Harald Kretz, Markus Vestner
  • Patent number: 6207919
    Abstract: A load break interrupter includes a case, an arc-suppressing tube mounted on and projecting outwardly from the case, a shunt circuit rod slidably supported in the tube with the rod and tube having electrical contacts mounted thereto and convertible between make and break conditions upon sliding of the rod into and from the tube, and a shunt circuit break actuating mechanism disposed in the case and coupled with a leading end of the rod extending into the case such that upon tripping of the actuating mechanism from a shunt circuit-defining position to a shunt circuit-breaking position the rod is pulled partially into the case from the tube thereby breaking the shunt circuit through the rod and between the electrical contacts such that any arcing that occurs upon breaking of the shunt circuit is confined and suppressed inside the tube.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: March 27, 2001
    Assignee: Hubbell Incorporated
    Inventor: Brad W. Davis
  • Patent number: 6177643
    Abstract: In a high-voltage circuit-breaker having arcing contact pieces that are movable relatively to each other, and an axially movable insulating nozzle, provision is made for an axially displaceable field electrode on the side lying opposite the drive. Used as an auxiliary drive for the field electrode is a first coupling shank which is connected to the axially movable insulating nozzle and which acts upon a gearing composed of a swivelling lever with a control pin a connecting link guide and a second coupling shank connected to the control pin and to the field electrode. For additionally driving the second arcing contact piece surrounded by the field electrode, the first coupling shank, with the assistance of a journal, also acts upon a deflection gear composed of a two-armed lever, having a fork-like design at one end for the coulisse-type guidance of the journal, and a pendulum element at the other end of the lever coupled to the second arcing contact piece.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: January 23, 2001
    Assignee: Siemens Aktiengeselleschaft
    Inventors: Heiner Marin, Volker Lehmann, Hold Dienemann
  • Patent number: 6072142
    Abstract: A switch assembly for high voltage overhead lines. The assembly includes circuit breakers with associated operators and circuit disconnectors with associated operators. These are supported by a stand. This switch assembly construction reduces the amount of space required by the switch gear and simplifies the erection of the switch gear. The stand has a single support base which supports all components of the switch assembly.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: June 6, 2000
    Assignee: ABB AB
    Inventors: Torbjorn Linder, Leif Skold
  • Patent number: 6020567
    Abstract: An operation apparatus of a circuit breaker provided with a mobile contact and a fixed contact, the mobile contact is pressed against the fixed contact or drawn apart from the fixed contact, comprising an operation rod fixed to the mobile contact and held to be movable with respect to the fixed contact, a mobile member movably connected to the operation rod, a relative movable range of the mobile member to the operation rod being limited within a predetermined value, a first elastic member for urging the operation rod with respect to the mobile member in a direction in which the mobile contact is pressed against the fixed contact, a fixed member for movably holding the mobile member, a second elastic member for urging the mobile member with respect to the fixed member in a direction in which the mobile contact is drawn apart from the fixed contact, a permanent magnet for driving the mobile member with respect to the fixed member in a direction in which the mobile contact is pressed against the fixed contact,
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: February 1, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinobu Ishikawa, Hiroshi Ohashi, Yasuharu Kanai, Makoto Taniguchi, Kenji Watanabe, Hidetake Shiire
  • Patent number: 6018134
    Abstract: A main circuit portions are arranged in the order of a breaking section fixed-side conductor, a breaking section movable-side conductor, a disconnecting section movable-side conductor, and a disconnecting section fixed-side conductor, and first and second grounding conductors are respectively provided for grounding the breaking section fixed-side conductor and the disconnecting section fixed-side conductor at both end portions of the apparatus. The arrangement of operating devices is set in the order of a first grounding-section operating device, a breaking-section operating device, a disconnecting-section operating device, and a second grounding-section operating device. In addition, a breaking section is supported by a single supporting insulator to reduce the number of creepage insulation portions.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: January 25, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiki Hirano, Naoyuki Nakatsukasa, Daisuke Yoshida, Kouichirou Wada, Mikio Mori, Masashi Matsuki