Patents by Inventor Shintaro KUROAKI
Shintaro KUROAKI 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: 11909180Abstract: A hermetic portion on the side of a main body portion of a gas insulated switchgear and a hermetic portion of a bushing tank which has polymer bushings connected to the main body portion are configured separately, and electrical connection between the main body portion side and the bushing tank is carried out in an open portion. A mid tank is provided in the rear of the main body portion in which a switching apparatus is housed, and conductor portions which are horizontally led out from the main body portion are led into the mid tank, bent upward, and connected to bushings on the top of the mid tank. Cables are extended downward from the bottom of the bushing tank disposed above the mid tank via a support panel, and in the open portion, the cables are connected to the bushings.Type: GrantFiled: March 5, 2019Date of Patent: February 20, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tadahiro Yoshida, Naoki Tanaka, Masayuki Takebe, Shintaro Kuroaki
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Patent number: 11658467Abstract: Provided is a busbar connecting device that can achieve good workability and high reliability at the same time. The busbar connecting device includes: a connection portion in which a busbar conductor and a current conductor of a bushing are connected; an insulation busbar connector covering the connection portion; a work hole communicating with the connection portion from an outside of the insulation busbar connector; and an insulating plug inserted into the work hole and sealing the insulation busbar connector, wherein a surface pressure between an inner circumferential surface of the work hole and an outer circumferential surface of the insulating plug is greater at a deep part of the work hole than at a shallow part of the work hole.Type: GrantFiled: December 26, 2018Date of Patent: May 23, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shintaro Yamada, Katsushi Nakada, Katsuki Hotta, Yasutomo Otake, Takao Tsurimoto, Shintaro Kuroaki
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Patent number: 11289885Abstract: A bushing tank having power receiving lead-in bushings of three phases to which conductor portions extended rearward of a main body portion in which a switching device is housed are connected is included, and the power receiving lead-in bushings of the three phases are disposed at an upper surface portion of the bushing tank at equal intervals in a circumferential direction such that end portions thereof are inclined outward so as to be separated from each other, and one of the power receiving lead-in bushings of the three phases is disposed along a front-rear direction of the main body portion. Owing to this configuration, it is possible not only to ensure insulation distances between the end portions of the power receiving lead-in bushings but also to ensure insulation distances between lead-in wires regardless of a power receiving lead-in direction.Type: GrantFiled: March 25, 2019Date of Patent: March 29, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tadahiro Yoshida, Naoki Tanaka, Masayuki Takebe, Shintaro Kuroaki
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Publication number: 20220006270Abstract: Provided is a busbar connecting device that can achieve good workability and high reliability at the same time. The busbar connecting device includes: a connection portion in which a busbar conductor and a current conductor of a bushing are connected; an insulation busbar connector covering the connection portion; a work hole communicating with the connection portion from an outside of the insulation busbar connector; and an insulating plug inserted into the work hole and sealing the insulation busbar connector, wherein a surface pressure between an inner circumferential surface of the work hole and an outer circumferential surface of the insulating plug is greater at a deep part of the work hole than at a shallow part of the work hole.Type: ApplicationFiled: December 26, 2018Publication date: January 6, 2022Applicant: Mitsubishi Electric CorporationInventors: Shintaro YAMADA, Katsushi NAKADA, Katsuki HOTTA, Yasutomo OTAKE, Takao TSURIMOTO, Shintaro KUROAKI
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Patent number: 11056862Abstract: An electrical device connector includes: a bus bar which includes a hollow portion extending in an axial direction and through holes extending in an axis-orthogonal direction, and which electrically connects a plurality of switchgears to each other; terminal members including bus bar support portions in which the bus bar is inserted, and including electrical device connection portions in which the insulation plugs are inserted and fixed; and stud bolts each having one end fixed to the corresponding switchgear, each extending in the axis-orthogonal direction through the corresponding through hole, and each fixing the corresponding insulation plug at the other end. Gaps are each formed between the corresponding stud bolt and the bus bar so as to allow communication between the hollow portion and an internal space of the corresponding terminal member.Type: GrantFiled: June 20, 2017Date of Patent: July 6, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shintaro Yamada, Tadahiro Yoshida, Eiji Morito, Shintaro Kuroaki
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Publication number: 20210175691Abstract: A bushing tank having power receiving lead-in bushings of three phases to which conductor portions extended rearward of a main body portion in which a switching device is housed are connected is included, and the power receiving lead-in bushings of the three phases are disposed at an upper surface portion of the bushing tank at equal intervals in a circumferential direction such that end portions thereof are inclined outward so as to be separated from each other, and one of the power receiving lead-in bushings of the three phases is disposed along a front-rear direction of the main body portion. Owing to this configuration, it is possible not only to ensure insulation distances between the end portions of the power receiving lead-in bushings but also to ensure insulation distances between lead-in wires regardless of a power receiving lead-in direction.Type: ApplicationFiled: March 25, 2019Publication date: June 10, 2021Applicant: Mitsubishi Electric CorporationInventors: Tadahiro YOSHIDA, Naoki TANAKA, Masayuki TAKEBE, Shintaro KUROAKI
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Publication number: 20210151962Abstract: An electrical device connector includes: a bus bar which includes a hollow portion extending in an axial direction and through holes extending in an axis-orthogonal direction, and which electrically connects a plurality of switchgears to each other; terminal members including bus bar support portions in which the bus bar is inserted, and including electrical device connection portions in which the insulation plugs are inserted and fixed; and stud bolts each having one end fixed to the corresponding switchgear, each extending in the axis-orthogonal direction through the corresponding through hole, and each fixing the corresponding insulation plug at the other end. Gaps are each formed between the corresponding stud bolt and the bus bar so as to allow communication between the hollow portion and an internal space of the corresponding terminal member.Type: ApplicationFiled: June 20, 2017Publication date: May 20, 2021Applicant: Mitsubishi Electric CorporationInventors: Shintaro YAMADA, Tadahiro YOSHIDA, Eiji MORITO, Shintaro KUROAKI
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Publication number: 20210143618Abstract: A hermetic portion on the side of a main body portion of a gas insulated switchgear and a hermetic portion of a bushing tank which has polymer bushings connected to the main body portion are configured separately, and electrical connection between the main body portion side and the bushing tank is carried out in an open portion. A mid tank is provided in the rear of the main body portion in which a switching apparatus is housed, and conductor portions which are horizontally led out from the main body portion are led into the mid tank, bent upward, and connected to bushings on the top of the mid tank. Cables are extended downward from the bottom of the bushing tank disposed above the mid tank via a support panel, and in the open portion, the cables are connected to the bushings.Type: ApplicationFiled: March 5, 2019Publication date: May 13, 2021Applicant: Mitsubishi Electric CorporationInventors: Tadahiro YOSHIDA, Naoki TANAKA, Masayuki TAKEBE, Shintaro KUROAKI