Patents by Inventor Tomotaka Yano
Tomotaka Yano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130155640Abstract: A gas insulated switchgear includes a transformer mounting body; a bushing mounted on the transformer mounting body; and a main circuit conductor. The main circuit conductor includes a first main circuit conductor which is connected to a circuit breaker and is located in the bushing and a second main circuit conductor which is connected to the first main circuit conductor. An insulator extends below the lower end of the transformer mounting body and toward the vicinity of the connection between the first main circuit conductor and the second main circuit conductor, in a region where the first main circuit conductor is located in the transformer mounting body. A ground shield is arranged in the insulator, and extends below the lower end of the transformer mounting body and above a coupling portion between the transformer mounting body and the bushing.Type: ApplicationFiled: January 28, 2011Publication date: June 20, 2013Applicant: Mitsubishi Electric CorporationInventors: Koji Sano, Masahiro Arioka, Tomotaka Yano, Kyoichi Ohtsuka
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Publication number: 20130146565Abstract: A vacuum valve includes a fixed side electrode on a fixed side current-carrying shaft and a movable side electrode on a movable side current-carrying shaft. An opening and closing unit is coaxially disposed with the movable side current-carrying shaft, and drives the movable side current-carrying shaft. A chattering suppression structure is coaxially disposed with the fixed side current-carrying shaft on the fixed side of the vacuum valve, and suppresses chattering. The opening and closing unit includes an electromagnetic operating mechanism which drives the movable side current-carrying shaft when energized. A contact pressure spring is coaxially disposed with the electromagnetic operating mechanism, and applies contact pressure between the movable side electrode and the fixed side electrode during contact closing of the vacuum valve.Type: ApplicationFiled: October 6, 2011Publication date: June 13, 2013Inventors: Yuta Nakayama, Tomotaka Yano, Taehyun Kim
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Publication number: 20120228267Abstract: A power switchgear according to the present invention includes a pass-through hole which is formed in a fixed side contact case that is supported by a fixed side insulation supporter to fix and retain the fixed side of a vacuum valve and has a larger inner diameter than an outer diameter of the vacuum valve so that the vacuum valve is capable of horizontally passing through and the fixed side end portion of the vacuum valve is placed by passing through; and a fixed side connection conductor attached to the fixed side contact case and connected to the fixed side end portion of the vacuum valve.Type: ApplicationFiled: September 16, 2010Publication date: September 13, 2012Applicant: Mitsubishi Electric CorporationInventors: Satoru Yoshida, Tomotaka Yano, Masahiro Arioka, Koji Sano
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Publication number: 20120212307Abstract: An electromagnetically operated switching device according to the present invention includes a pair of electromagnetically operated mechanisms for driving a main circuit contact of a switch via a link mechanism symmetrically arranged with respect to an operational center axis, and a length of a spring retaining plate can be regulated in accordance with a change of a link ratio, which is caused by a design change of the main circuit contact.Type: ApplicationFiled: January 13, 2010Publication date: August 23, 2012Applicant: Mitsubishi Electric CorporationInventors: Toru Kimura, Tomotaka Yano
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Patent number: 8237075Abstract: Provided is a vacuum circuit breaker whose insulation cylinder contained in a gas-insulated-switchgear housing contains a vacuum valve and which can be downsized while the cylinder's required mechanical strength is retained, and a gas-insulated switchgear using the same is also provided.Type: GrantFiled: April 7, 2008Date of Patent: August 7, 2012Assignee: Mitsubishi Electric CorporationInventors: Hiroshi Isoya, Masahiro Arioka, Tomotaka Yano
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Publication number: 20120169441Abstract: In a switch device in which the main circuit contact sections of the switch device, an insulating rod, a driving rod, a contact pressure spring, an open spring, and an electromagnet are all coaxially arranged, a problem exists in that the axial dimension of the switch device becomes large. The present invention has been made to solve the aforementioned problem. An object is to obtain an electromagnet device and a switch device using the electromagnet device, in which shortening the axial dimension of the switch device is achieved by arranging the main circuit contact sections of the switch device, the insulating rod, the driving rod, the contact pressure spring, the open spring, and a part of the electromagnet in the same axial range. Particularly, the open spring and the electromagnet are arranged in the same axial region.Type: ApplicationFiled: October 29, 2009Publication date: July 5, 2012Inventors: Taehyun Kim, Tomotaka Yano, Masahiro Arioka
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Publication number: 20120103941Abstract: A power switching apparatus includes: a pressure tank having tube-like openings in a shank portion and having an insulating gas sealed therein; a vacuum valve housed in the pressure tank and connected to the pressure tank at one end; bushing conductors penetrating through the openings of the pressure tank and electrically connected to the vacuum valve; and current transformers provided on an outside of the pressure tank and measuring a current flowing through the bushing conductors. Tube-like current transformer installation portions on which to install the current transformers are provided above the openings of the pressure tank and an outside diameter of the openings of the pressure tank is made larger than an outside diameter of the current transformer installation portions.Type: ApplicationFiled: August 30, 2010Publication date: May 3, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuta Nakayama, Masahiro Arioka, Tomotaka Yano, Kyoichi Otsuka, Satoru Yoshida, Koji Sano
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Patent number: 8149077Abstract: An electromagnetic operating device for a switch comprises a fixed yoke (1) formed by laminating square yokes and an E-shaped yoke integrally while holding the E-shaped yoke in-between, a permanent magnet (5), a moving member (2) capable of linear movement in the fixed yoke by a predetermined distance, a rod (3) coupled with the moving member and penetrating the fixed yoke to project outward from opposite sides, and a drive coil (4) disposed in the fixed yoke, the moving member moving on the inside of the fixed yoke when a current is supplied through the drive coils, wherein the fixed yoke (1) is provided with a plurality of holes (1c) penetrating in the laminating direction of magnetic steel sheets, pins (6) each having a diameter slightly smaller than that of the plurality of holes and provided with a threaded portion (6a) at the end are inserted to penetrate two or more of the plurality of holes, and the laminated fixed yoke is fastened using the threaded portions of the pins.Type: GrantFiled: April 10, 2006Date of Patent: April 3, 2012Assignee: Mitsubishi Electric CorporationInventors: Tomotaka Yano, Masahiro Arioka
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Publication number: 20120024506Abstract: In order to obtain a switchgear which can improve heat dissipation efficiency, in the switchgear which dissipates heat outside an apparatus vessel, the heat being generated from an electrical apparatus placed in the apparatus vessel, the switchgear includes a first heat conductor in which one side is connected to a heat generation portion of the apparatus vessel and the other side is extended toward the apparatus vessel side, a second heat conductor in which one side is disposed near the other side of the first heat conductor and the other side is extended outside the apparatus vessel, and an insulating member between conductors disposed between the other side of the first heat conductor and one side of the second heat conductor.Type: ApplicationFiled: August 25, 2009Publication date: February 2, 2012Applicant: Mitsubishi Electric CorporationInventors: Tomotaka Yano, Satoru Yoshida, Masahiro Arioka
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Publication number: 20110284264Abstract: In a conductor of a high voltage electrical apparatus, the conductor being placed in a vessel filled with insulating gas together with an electrical apparatus, the conductor is configured by a polygonal tubular conductor, and an opening portion which makes the insulating gas flowing in from an end portion of the polygonal tubular conductor flow out is formed in at least one surface of the polygonal tubular conductor. This aims to obtain the conductor of the high voltage electrical apparatus, the conductor being capable of achieving reduction in cost and high reliability.Type: ApplicationFiled: April 24, 2009Publication date: November 24, 2011Applicant: Mitsubishi Electric CorporationInventors: Taehyun Kim, Tomotaka Yano
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Patent number: 8040210Abstract: A switching contact, an electromagnetically operated electromagnet for driving the switching contact, and a drive power source device for driving the electromagnetically operated electromagnet. The electromagnetically operated electromagnet includes a movable core coupled to a movable contact of the switching contact, a fixed core located in a peripheral portion of the movable core, and coils wound around the movable core and the fixed core. Currents are supplied to the coils to drive the movable core. Capacitors store charges for supplying the current to the coils. Resistors are arranged in series with a path through which the capacitors are connected with the coils of the electromagnetically operated electromagnet and through which a current for closing operation flows. Capacitances of the capacitors and values of the resistors are controlled to adjust a supplied current characteristic to the electromagnetically operated electromagnet.Type: GrantFiled: February 23, 2007Date of Patent: October 18, 2011Assignee: Mitsubishi Electric CorporationInventors: Tae Hyun Kim, Akihiko Maruyama, Tomotaka Yano
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Patent number: 7910847Abstract: A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4.Type: GrantFiled: August 10, 2010Date of Patent: March 22, 2011Assignee: Mitsubishi Electric CorporationInventors: Osamu Takahara, Tae Hyun Kim, Tomotaka Yano, Akihiko Imagi
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Publication number: 20110000886Abstract: Provided is a vacuum circuit breaker whose insulation cylinder contained in a gas-insulated-switchgear housing contains a vacuum valve and which can be downsized while the cylinder's required mechanical strength is retained, and a gas-insulated switchgear using the same is also provided.Type: ApplicationFiled: April 7, 2008Publication date: January 6, 2011Applicant: Mitsubishi Electric CorporationInventors: Hiroshi Isoya, Masahiro Arioka, Tomotaka Yano
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Publication number: 20100320063Abstract: A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4.Type: ApplicationFiled: August 10, 2010Publication date: December 23, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Osamu TAKAHARA, Tae Hyun Kim, Tomotaka Yano, Akihiko Imagi
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Patent number: 7812273Abstract: A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4.Type: GrantFiled: August 8, 2007Date of Patent: October 12, 2010Assignee: Mitsubishi Electric CorporationInventors: Osamu Takahara, Tae Hyun Kim, Tomotaka Yano, Akihiko Imagi
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Publication number: 20090284334Abstract: A switching contact, an electromagnetically operated electromagnet for driving the switching contact, and a drive power source device for driving the electromagnetically operated electromagnet. The electromagnetically operated electromagnet includes a movable core coupled to a movable contact of the switching contact, a fixed core located in a peripheral portion of the movable core, and coils wound around the movable core and the fixed core. Currents are supplied to the coils to drive the movable core. Capacitors store charges for supplying the current to the coils. Resistors are arranged in series with a path through which the capacitors are connected with the coils of the electromagnetically operated electromagnet and through which a current for closing operation flows. Capacitances of the capacitors and values of the resistors are controlled to adjust a supplied current characteristic to the electromagnetically operated electromagnet.Type: ApplicationFiled: February 23, 2007Publication date: November 19, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tae Hyun Kim, Akihiko Maruyama, Tomotaka Yano
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Publication number: 20090160588Abstract: An electromagnetic operating device for a switch comprises a fixed yoke (1) formed by laminating square yokes and an E-shaped yoke integrally while holding the E-shaped yoke in-between, a permanent magnet (5), a moving member (2) capable of linear movement in the fixed yoke by a predetermined distance, a rod (3) coupled with the moving member and penetrating the fixed yoke to project outward from opposite sides, and a drive coil (4) disposed in the fixed yoke, the moving member moving on the inside of the fixed yoke when a current is supplied through the drive coils, wherein the fixed yoke (1) is provided with a plurality of holes (1c) penetrating in the laminating direction of magnetic steel sheets, pins (6) each having a diameter slightly smaller than that of the plurality of holes and provided with a threaded portion (6a) at the end are inserted to penetrate two or more of the plurality of holes, and the laminated fixed yoke is fastened using the threaded portions of the pins.Type: ApplicationFiled: April 10, 2006Publication date: June 25, 2009Applicant: Mitsubishi Electric CorporationInventors: Tomotaka Yano, Masahiro Arioka
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Publication number: 20080047819Abstract: A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4.Type: ApplicationFiled: August 8, 2007Publication date: February 28, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Osamu TAKAHARA, Tae Hyun Kim, Tomotaka Yano, Akihiko Imagi
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Patent number: D694711Type: GrantFiled: September 20, 2012Date of Patent: December 3, 2013Assignee: Mitsubishi Electric CorporationInventors: Masahiro Arioka, Tomotaka Yano, Kyoichi Otsuka, Satoru Yoshida, Taehyun Kim, Koji Sano, Yuta Nakayama
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Patent number: D695232Type: GrantFiled: September 20, 2012Date of Patent: December 10, 2013Assignee: Mitsubishi Electric CorporationInventors: Masahiro Arioka, Tomotaka Yano, Kyoichi Otsuka, Satoru Yoshida, Taehyun Kim, Koji Sano, Yuta Nakayama