Patents by Inventor Daisuke Nomura
Daisuke Nomura 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: 11761348Abstract: There is provided an axial flow turbine capable of realizing a reduction in gland leakage amount. The axial flow turbine in an embodiment is of a single flow type and includes an upstream-side gland part located on an upstream side of a working medium in an axial direction of a turbine rotor and a downstream-side gland part located on a downstream side of the working medium in the axial direction of the turbine rotor. The axial flow turbine is configured such that a cooling medium lower in temperature and higher in pressure than the working medium is extracted in a middle of flowing from the inside to the outside of the turbine casing in the upstream-side gland part, and the extracted cooling medium is introduced into the stationary blade.Type: GrantFiled: February 12, 2021Date of Patent: September 19, 2023Assignee: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shogo Iwai, Tsuguhisa Tashima, Takahiro Ono, Daisuke Nomura
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Patent number: 11459900Abstract: According to an embodiment, a turbine stator blade disposed in a working fluid flow path in a casing of a gas turbine, includes: a blade effective part disposed in the working fluid flow path; an outer circumferential sidewall having a plate-shaped part that is connected to a radially outer end portion of the blade effective part, and hooks each extending radially outward and circumferentially from the plate-shaped part and having a tip engaged with the casing; and an inner circumferential sidewall connected to a radially inner end portion of the blade effective part. At least one slit is formed at the rear hook or front hook to divide the hook in a circumferential direction, and the hook has a seal member to seal the slit.Type: GrantFiled: June 9, 2021Date of Patent: October 4, 2022Assignee: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norikazu Takagi, Tsuguhisa Tashima, Daisuke Nomura, Yoshifumi Iwasaki, Shogo Iwai, Takahiro Ono
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Publication number: 20210388731Abstract: According to an embodiment, a turbine stator blade disposed in a working fluid flow path in a casing of a gas turbine, includes: a blade effective part disposed in the working fluid flow path; an outer circumferential sidewall having a plate-shaped part that is connected to a radially outer end portion of the blade effective part, and hooks each extending radially outward and circumferentially from the plate-shaped part and having a tip engaged with the casing; and an inner circumferential sidewall connected to a radially inner end portion of the blade effective part. At least one slit is formed at the rear hook or front hook to divide the hook in a circumferential direction, and the hook has a seal member to seal the slit.Type: ApplicationFiled: June 9, 2021Publication date: December 16, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norikazu TAKAGI, Tsuguhisa TASHIMA, Daisuke NOMURA, Yoshifumi IWASAKI, Shogo IWAI, Takahiro ONO
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Publication number: 20210285331Abstract: According to an embodiment, a turbine stator blade disposed in a working fluid flow path in a casing of a gas turbine, comprises: a blade effective part disposed in the working fluid flow path; an outer ring sidewall having a plate-shaped portion connecting to a radially outer end portion of the blade effective part, a front hook extending radially outward and circumferentially from the plate-shaped portion and having a tip fitting with the casing, a rear hook extending radially outward and circumferentially from the plate-shaped portion and having a tip fitting with the casing; and a reinforcing member that maintains an interval between the front hook and the rear hook; and an inner ring sidewall connected to a radially inner end portion of the blade effective part.Type: ApplicationFiled: February 23, 2021Publication date: September 16, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norikazu TAKAGI, Tsuguhisa TASHIMA, Daisuke NOMURA, Yoshifumi IWASAKI, Shogo IWAI, Takahiro ONO
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Publication number: 20210262362Abstract: There is provided an axial flow turbine capable of realizing a reduction in gland leakage amount. The axial flow turbine in an embodiment is of a single flow type and includes an upstream-side gland part located on an upstream side of a working medium in an axial direction of a turbine rotor and a downstream-side gland part located on a downstream side of the working medium in the axial direction of the turbine rotor. The axial flow turbine is configured such that a cooling medium lower in temperature and higher in pressure than the working medium is extracted in a middle of flowing from the inside to the outside of the turbine casing in the upstream-side gland part, and the extracted cooling medium is introduced into the stationary blade.Type: ApplicationFiled: February 12, 2021Publication date: August 26, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shogo IWAI, Tsuguhisa TASHIMA, Takahiro ONO, Daisuke NOMURA
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Publication number: 20210262361Abstract: There is provided a turbine in which a sufficient measure against windage loss can be executed. In a turbine of an embodiment, a cooling medium higher in pressure and lower in temperature than a working medium is introduced to the inside from the outside of a turbine casing. Here, in at least a turbine stage of an exhaust stage, the cooling medium passes through a stator blade and thereafter passes through a flow path present between rotor blades and a rotor wheel to flow to an exhaust-stage wheel space.Type: ApplicationFiled: February 8, 2021Publication date: August 26, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Tsuguhisa TASHIMA, Takahiro ONO, Shogo IWAI, Daisuke NOMURA, Norikazu TAKAGI, Tomomi OKUYAMA, Koki NISHIMURA
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Patent number: 10401622Abstract: A vehicle window plate has a maximum value of a variation of a curvature in a vertical direction being ±7.6E-6 mm?2 or less at least within a HUD display area. The curvature preferably increases monotonically from a lower side to an upper side at least within the HUD display area.Type: GrantFiled: April 26, 2017Date of Patent: September 3, 2019Assignee: AGC Inc.Inventors: Daisuke Nomura, Shunsuke Sadakane
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Patent number: 10049839Abstract: A gas circuit breaker having a pair of contacts and a pair of exhaust conductors. An exhaust hole in the pair of exhaust conductors is provided with an insulation cover having an opening. The cover has a guide on an opening end on the side near the pair of contacts and an opening end on the side far from the pair of contacts respectively. The guide has an exhaust hole protective guide and a high-temperature gas passage dividing guide. A first gas flow passage is between an exhaust hole protective guide and a high-temperature gas passage dividing guide, and a second gas flow passage is between the high-temperature gas passage dividing guides. The first gas flow passage is narrower than the second gas flow passage. An end of the exhaust hole protective guide on the first gas flow passage side is projected toward the high-temperature gas passage dividing guide.Type: GrantFiled: March 4, 2015Date of Patent: August 14, 2018Assignee: HITACHI, LTD.Inventors: Hideaki Uchiyama, Noriyuki Yaginuma, Daisuke Nomura, Hiroyuki Nakamichi, Yuji Kaneko
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Patent number: 10018046Abstract: A steam turbine 10 of an embodiment includes a turbine rotor 30, rotor blade cascades 41 having rotor blades 40, stationary blade cascades 53 having stationary blades 52, and a steam passage 60 formed on a turbine stage, among turbine stages, including the rotor blades each having a blade height equal to or more than a blade height at which a loss generated when a leakage steam flown between a diaphragm inner ring 51 and the turbine rotor 30 jets into a main steam and a benefit brought by increasing the blade height of each of the rotor blades 40 in accordance with an increase in a flow rate of the main steam by an amount of the leakage steam are cancelled, and leading the leakage steam from an upstream side to a downstream side of a rotor disk 31.Type: GrantFiled: February 27, 2014Date of Patent: July 10, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Daisuke Nomura, Akihiro Onoda, Junichi Tominaga, Shinichiro Ohashi
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Patent number: 9892875Abstract: An insulation rod cover is fitted to an end portion of a puffer shaft and the insulation rod cover is fitted to a circuit-breaker side coupling pin coupling between a puffer shaft and an insulation rod, thereby allowing the insulation rod cover to be held at a joint between the puffer shaft and the insulation rod. In a first half of a circuit-breaking operation, the insulation rod cover is positioned in the exhaust cylinder and the exhaust of the hot gas from the puffer shaft is suppressed to increase the pressure of an extinguishing gas to be sprayed onto the arc. In a last half of the circuit-breaking operation, the insulation rod cover is positioned in a guard cylinder to promote the exhaust of the hot gas from the puffer shaft as well as to suppress the flow of the hot gas into the insulation cylinder.Type: GrantFiled: March 2, 2015Date of Patent: February 13, 2018Assignee: Hitachi, Ltd.Inventors: Daisuke Nomura, Noriyuki Yaginuma, Masanori Tsukushi
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Publication number: 20170315350Abstract: A vehicle window plate has a maximum value of a variation of a curvature in a vertical direction being ±7.6E-6 mm?2 or less at least within a HUD display area. The curvature preferably increases monotonically from a lower side to an upper side at least within the HUD display area.Type: ApplicationFiled: April 26, 2017Publication date: November 2, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Daisuke NOMURA, Shunsuke SADAKANE
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Publication number: 20170263398Abstract: A gas circuit breaker having a pair of contacts and a pair of exhaust conductors. An exhaust hole in the pair of exhaust conductors is provided with an insulation cover having an opening. The cover has a guide on an opening end on the side near the pair of contacts and an opening end on the side far from the pair of contacts respectively. The guide has an exhaust hole protective guide and a high-temperature gas passage dividing guide. A first gas flow passage is between an exhaust hole protective guide and a high-temperature gas passage dividing guide, and a second gas flow passage is between the high-temperature gas passage dividing guides. The first gas flow passage is narrower than the second gas flow passage. An end of the exhaust hole protective guide on the first gas flow passage side is projected toward the high-temperature gas passage dividing guide.Type: ApplicationFiled: March 4, 2015Publication date: September 14, 2017Applicant: HITACHI, LTD.Inventors: Hideaki UCHIYAMA, Noriyuki YAGINUMA, Daisuke NOMURA, Hiroyuki NAKAMICHI, Yuji KANEKO
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Patent number: 9704679Abstract: A gas circuit breaker including a pair of main contacts is openable inside an insulating tank. A pair of arc contacts is arranged on the inner side of the main contacts, and a puffer cylinder has the main contacts and the arc contacts at an end. A puffer chamber is formed inside the puffer cylinder, and a puffer piston is provided on the inner periphery of the puffer cylinder. An insulating nozzle part is mounted on an end of the puffer cylinder to surround the arc contact. The insulating nozzle part includes a split nozzle base part and a split nozzle end part, and the split nozzle base part has a throat part.Type: GrantFiled: April 18, 2014Date of Patent: July 11, 2017Assignee: Hitachi, Ltd.Inventors: Daisuke Nomura, Noriyuki Yaginuma, Yuuji Kaneko, Makoto Hirose
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Publication number: 20170148591Abstract: An insulation rod cover is fitted to an end portion of a puffer shaft and the insulation rod cover is fitted to a circuit-breaker side coupling pin coupling between a puffer shaft and an insulation rod, thereby allowing the insulation rod cover to be held at a joint between the puffer shaft and the insulation rod. In a first half of a circuit-breaking operation, the insulation rod cover is positioned in the exhaust cylinder and the exhaust of the hot gas from the puffer shaft is suppressed to increase the pressure of an extinguishing gas to be sprayed onto the arc. In a last half of the circuit-breaking operation, the insulation rod cover is positioned in a guard cylinder to promote the exhaust of the hot gas from the puffer shaft as well as to suppress the flow of the hot gas into the insulation cylinder.Type: ApplicationFiled: March 2, 2015Publication date: May 25, 2017Inventors: Daisuke NOMURA, Noriyuki YAGINUMA, Masanori TSUKUSHI
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Patent number: 9543095Abstract: A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinder 104 has a cylindrical member 104a at a breaker side end, an end of the insulating nozzle 101 is provided in the cylindrical member 104a. And the gas circuit breaker is configured by further comprising a hollow moving side main contact 102 at a breaker side end of the cylindrical member 104a, a pressing metal fitting 103 to engage an insulating nozzle 101 in the hollow part of the moving side main contact 102.Type: GrantFiled: February 3, 2014Date of Patent: January 10, 2017Assignee: Hitachi, Ltd.Inventors: Yuji Kaneko, Noriyuki Yaginuma, Daisuke Nomura, Makoto Hirose
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Publication number: 20160133407Abstract: A gas circuit breaker including a pair of main contacts is openable inside an insulating tank. A pair of arc contacts is arranged on the inner side of the main contacts, and a puffer cylinder has the main contacts and the arc contacts at an end. A puffer chamber is formed inside the puffer cylinder, and a puffer piston is provided on the inner periphery of the puffer cylinder. An insulating nozzle part is mounted on an end of the puffer cylinder to surround the arc contact. The insulating nozzle part includes a split nozzle base part and a split nozzle end part, and the split nozzle base part has a throat part.Type: ApplicationFiled: April 18, 2014Publication date: May 12, 2016Inventors: Daisuke NOMURA, Noriyuki YAGINUMA, Yuuji KANEKO, Makoto HIROSE
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Publication number: 20160005559Abstract: A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinder 104 has a cylindrical member 104a at a breaker side end, an end of the insulating nozzle 101 is provided in the cylindrical member 104a. And the gas circuit breaker is configured by further comprising a hollow moving side main contact 102 at a breaker side end of the cylindrical member 104a, a pressing metal fitting 103 to engage an insulating nozzle 101 in the hollow part of the moving side main contact 102.Type: ApplicationFiled: February 3, 2014Publication date: January 7, 2016Inventors: Yuji KANEKO, Noriyuki YAGINUMA, Daisuke NOMURA, Makoto HIROSE
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Patent number: 9035729Abstract: In a gas circuit breaker with a parallel capacitor, an interrupting unit is provided inside a sealed vessel filled with an insulating gas; the interrupting unit includes fixed and movable parts. A high-voltage conductor is coupled to the movable part, and an interrupting-unit side insulating rod for moving the movable part is linked with a mover as part of an electric actuator inside an operation device case. A capacitor is electrically coupled to the interrupting unit in parallel inside the sealed vessel. A movable contact is electrically coupled to the capacitor, and the movable contact is linked with a capacitor-side insulating rod. The interrupting-unit side insulating rod or mover has an engaging part inside the case, the capacitor-side insulating rod has a retaining part located on a side of the engaging part, and the retaining part is linked with the sealed vessel by use of a closing-spring.Type: GrantFiled: November 27, 2013Date of Patent: May 19, 2015Assignee: Hitachi, Ltd.Inventors: Daisuke Nomura, Masanori Tsukushi
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Publication number: 20140271125Abstract: A steam turbine 10 of an embodiment includes a turbine rotor 30, rotor blade cascades 41 having rotor blades 40, stationary blade cascades 53 having stationary blades 52, and a steam passage 60 formed on a turbine stage, among turbine stages, including the rotor blades each having a blade height equal to or more than a blade height at which a loss generated when a leakage steam flown between a diaphragm inner ring 51 and the turbine rotor 30 jets into a main steam and a benefit brought by increasing the blade height of each of the rotor blades 40 in accordance with an increase in a flow rate of the main steam by an amount of the leakage steam are cancelled, and leading the leakage steam from an upstream side to a downstream side of a rotor disk 31.Type: ApplicationFiled: February 27, 2014Publication date: September 18, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Daisuke Nomura, Akihiro Onoda, Junichi Tominaga, Shinichiro Ohashi
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Patent number: 8798830Abstract: A charge controller for charging a battery of a plug-in vehicle with a plurality of electric power sources includes: a driving route estimation element; an estimated electric power consumption amount calculator; a weather information obtaining element; a sunshine information obtaining element; a solar photovoltaic generation electric power amount calculator; an electric power shortage amount calculator for calculating an electric power shortage amount when the solar photovoltaic generation electric power amount is smaller than an estimated electric power consumption amount; a charge schedule preparation element for preparing a charge schedule, which represents a first charge time for charging the battery with a solar photovoltaic generation system and a second charge time for charging the battery by the electric power shortage amount with another electric power source; and a charge control element for controlling to charge the battery according to the charge schedule.Type: GrantFiled: February 11, 2011Date of Patent: August 5, 2014Assignee: DENSO CORPORATIONInventors: Eiji Sobue, Yoshihiko Sugawara, Satoshi Kouchiyama, Daisuke Nomura, Ryoichi Ijima