Patents by Inventor Hiroshi Isoya
Hiroshi Isoya 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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Patent number: 9318887Abstract: An object of the present invention is to obtain a resin molded bushing which can easily perform positioning of an electric field relaxation shield in a switchgear. The resin molded bushing includes: an electric field relaxation shield which concentrically surrounds the outer periphery of an internal conductor made of conductor; a cast resin which covers the internal conductor and the electric field relaxation shield; and an elastic member which is disposed on the outer periphery of the electric field relaxation shield and is embedded in the cast resin. The height of the elastic member is equal to the thickness of the cast resin which covers the electric field relaxation shield.Type: GrantFiled: February 28, 2013Date of Patent: April 19, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takayuki Fukuoka, Hiroshi Isoya, Tadahiro Yoshida, Yoshiharu Irie
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Publication number: 20150244158Abstract: An object of the present invention is to obtain a resin molded bushing which can easily perform positioning of an electric field relaxation shield in a switchgear. The resin molded bushing includes: an electric field relaxation shield which concentrically surrounds the outer periphery of an internal conductor made of conductor; a cast resin which covers the internal conductor and the electric field relaxation shield; and an elastic member which is disposed on the outer periphery of the electric field relaxation shield and is embedded in the cast resin. The height of the elastic member is equal to the thickness of the cast resin which covers the electric field relaxation shield.Type: ApplicationFiled: February 28, 2013Publication date: August 27, 2015Applicant: Mitsubishi Electric CorporationInventors: Takayuki FUKUOKA, Hiroshi ISOYA, Tadahiro YOSHIDA, Yoshiharu IRIE
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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: 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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Patent number: 7777605Abstract: To provide a structure capable of securing satisfactory induction coupling efficiency and high reliability in manufacturing an induction coupling apparatus used in power line carrier communication, the induction coupling apparatus having a magnetic core formed from a first core element part and a second core element part so that a gap would be formed between the core element parts, includes: a core parallel moving mechanism for carrying out relative and parallel movement of the first core element part and the second core element part in a direction that the length of the gap varies; and a predetermined gap length regulating member for limiting parallel movement in a direction that the first core element part and the second core element part approach each other to regulate the gap length to the predetermined gap length in the case that the core parallel moving mechanism is used for the parallel movement.Type: GrantFiled: March 16, 2007Date of Patent: August 17, 2010Assignee: Mitsubishi Electric CorporationInventors: Nobuyuki Zumoto, Hiroshi Isoya, Takao Tsurimoto, Yuichiro Murata, Youichi Hisamori
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Publication number: 20070285201Abstract: To provide a structure capable of securing satisfactory induction coupling efficiency and high reliability in manufacturing an induction coupling apparatus used in power line carrier communication, the induction coupling apparatus having a magnetic core formed from a first core element part and a second core element part so that a gap would be formed between the core element parts, includes: a core parallel moving mechanism for carrying out relative and parallel movement of the first core element part and the second core element part in a direction that the length of the gap varies; and a predetermined gap length regulating member for limiting parallel movement in a direction that the first core element part and the second core element part approach each other to regulate the gap length to the predetermined gap length in the case that the core parallel moving mechanism is used for the parallel movement.Type: ApplicationFiled: March 16, 2007Publication date: December 13, 2007Applicant: Mitsubishi Electric CorporationInventors: Nobuyuki Zumoto, Hiroshi Isoya, Takao Tsurimoto, Yuichiro Murata, Youichi Hisamori
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Patent number: 6459567Abstract: A gas-insulated switchgear comprising bushings mounted to and passing through a vessel wall of the hermetic vessel, each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel. Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis. The flat bushing mounting vessel walls are tilted from inside to outside relative to other portion of the wall.Type: GrantFiled: May 31, 2001Date of Patent: October 1, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Arioka, Hiroshi Isoya, Takakazu Harada
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Patent number: 6392157Abstract: An inexpensive device for bus coupling between enclosed switchboards with an insulating gas sealed therein has a simple structure and requires a shorter time for installation. The bore shape of a connection port for a coupling bus in a T-shaped bushing is a conical shape having a diameter that increases outwardly. The coupling bus is covered with an insulating rubber member, and a conductive layer is provided on an outer peripheral surface of the insulating rubber member, and grounded. Both ends of the coupling bus that are inserted into the connection ports are formed to have shapes that fit to the conical connection ports.Type: GrantFiled: January 22, 2001Date of Patent: May 21, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Arioka, Hiroshi Isoya
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Publication number: 20020015281Abstract: A gas-insulated switchgear comprising bushings mounted to and passing through a vessel wall of the hermetic vessel, each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the electric device within the hermetic vessel. Each of the bushings has a central axis that is perpendicular to the common axis of the electric device and spaced apart from each other in the direction of extension of the common axis and shifted by a predetermined angle with respect to each other about the common axis. The flat bushing mounting vessel walls are tilted from inside to outside relative to other portion of the wall.Type: ApplicationFiled: May 31, 2001Publication date: February 7, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Masahiro Arioka, Hiroshi Isoya, Takakazu Harada
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Publication number: 20010009199Abstract: An inexpensive device for bus coupling between enclosed switchboards with an insulating gas sealed therein has a simple structure and requires a shorter time for installation. The bore shape of a connection port for a coupling bus in a T-shaped bushing is a conical shape having a diameter that increases outwardly. The coupling bus is covered with an insulating rubber member, and a conductive layer is provided on an outer peripheral surface of the insulating rubber member, and grounded. Both ends of the coupling bus that are inserted into the connection ports are formed to have shapes that fit to the conical connection ports.Type: ApplicationFiled: January 22, 2001Publication date: July 26, 2001Inventors: Masahiro Arioka, Hiroshi Isoya