Patents by Inventor Norio Takahashi
Norio Takahashi 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: 12057743Abstract: In general, according to one embodiment, there is provided an abnormality detection system of a rotary electrical machine. The system includes a plurality of magnetic flux sensors disposed at intervals on a back of a stator core in a circumferential direction or an axial direction, and configured to detect a magnetic flux, and an abnormality detection apparatus configured to detect an abnormality of the stator core from a predetermined event that appears in a composite signal or a differential signal obtained from signals respectively output from at least two magnetic flux sensors of the plurality of magnetic flux sensors.Type: GrantFiled: June 28, 2021Date of Patent: August 6, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norio Takahashi, Masafumi Fujita, Takahiro Sato, Takashi Ueda, Ken Nagakura, Masashi Kobayashi, Koji Ando
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Patent number: 11603002Abstract: A charge and discharge device for an electric vehicle includes a cable, a holder, and a cable suspending portion. The cable has a distal end at which a charge connector is provided. The charge connector is coupled to an electric vehicle to charge and discharge. The holder holds the charge connector. The cable suspending portion suspends and holds the cable. The holder and the cable suspending portion are disposed at a housing installed on a wall surface. The cable is extracted from the housing. The housing has a side portion at which a tapered surface as a surface facing obliquely ahead is disposed. The holder is mounted on the tapered surface.Type: GrantFiled: August 16, 2017Date of Patent: March 14, 2023Assignees: KAWAMURA ELECTRIC, INC., HONDA MOTOR CO., LTD.Inventors: Haruhiko Murase, Norio Takahashi, Makoto Ogawa, Michihito Okado
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Patent number: 11565599Abstract: A charge and discharge device for an electric vehicle includes a cable, a holder, and a cable suspending portion. The cable has a distal end at which a charge connector is provided. The charge connector is coupled to an electric vehicle to charge and discharge. The holder holds the charge connector. The cable suspending portion suspends and holds the cable. The holder and the cable suspending portion are disposed at a housing installed on a wall surface. The cable is extracted from the housing. The housing has a side portion at which a tapered surface as a surface facing obliquely ahead is disposed. The holder is mounted on the tapered surface.Type: GrantFiled: August 16, 2017Date of Patent: January 31, 2023Assignees: KAWAMURA ELECTRIC, INC., HONDA MOTOR CO., LTD.Inventors: Haruhiko Murase, Norio Takahashi, Makoto Ogawa, Michihito Okado
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Patent number: 11346885Abstract: According to one embodiment, a winding interlayer short-circuit detection apparatus includes a processor configured to perform at least an interlayer short-circuit detecting process to detect, based on a difference between a measurement value of a field current in a field winding of a brushless exciter and a reference value, and based on a difference between a calculated value of an armature reaction voltage induced in the field winding of the brushless exciter and a reference value, a presence or absence of an interlayer short-circuit that may occur in any of the field winding of the brushless exciter, an armature winding of the brushless exciter, and a field winding of a rotary electric machine body.Type: GrantFiled: March 16, 2021Date of Patent: May 31, 2022Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Takahiro Sato, Masafumi Fujita, Norio Takahashi, Ken Nagakura, Koji Ando, Yoichi Tomoe
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Publication number: 20220021277Abstract: In general, according to one embodiment, there is provided an abnormality detection system of a rotary electrical machine. The system includes a plurality of magnetic flux sensors disposed at intervals on a back of a stator core in a circumferential direction or an axial direction, and configured to detect a magnetic flux, and an abnormality detection apparatus configured to detect an abnormality of the stator core from a predetermined event that appears in a composite signal or a differential signal obtained from signals respectively output from at least two magnetic flux sensors of the plurality of magnetic flux sensors.Type: ApplicationFiled: June 28, 2021Publication date: January 20, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions CorporationInventors: Norio Takahashi, Masafumi Fujita, Takahiro Sato, Takashi Ueda, Ken Nagakura, Masashi Kobayashi, Koji Ando
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Patent number: 11165291Abstract: A stator core support device according to an embodiment includes plural types of support members that support a stator core on a stator frame disposed radially outward. These support members are combined so as to form a closed circuit portion. Then, an insulating part for electrically insulating part of the closed circuit portion is provided.Type: GrantFiled: July 31, 2018Date of Patent: November 2, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norio Takahashi, Masafumi Fujita, Takahiro Sato, Hideyuki Nakamura, Ken Nagakura, Kazuma Tsujikawa
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Publication number: 20210293886Abstract: According to one embodiment, a winding interlayer short-circuit detection apparatus includes a processor configured to perform at least an interlayer short-circuit detecting process to detect, based on a difference between a measurement value of a field current in a field winding of a brushless exciter and a reference value, and based on a difference between a calculated value of an armature reaction voltage induced in the field winding of the brushless exciter and a reference value, a presence or absence of an interlayer short-circuit that may occur in any of the field winding of the brushless exciter, an armature winding of the brushless exciter, and a field winding of a rotary electric machine body.Type: ApplicationFiled: March 16, 2021Publication date: September 23, 2021Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions CorporationInventors: Takahiro SATO, Masafumi FUJITA, Norio TAKAHASHI, Ken NAGAKURA, Koji ANDO, Yoichi TOMOE
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Patent number: 11031832Abstract: According to one embodiment, a stator includes spacing strips disposed to be interposed in the electromagnetic steel plates for each predetermined set of plates of the electromagnetic steel plates, each of the spacing strips extending in a radial direction of the stator iron core to form ventilation ducts, a spacing strip attachment plate which is disposed between the spacing strips and the set of plates of the electromagnetic steel plates to fix the spacing strips, and an insulating layer which covers the entirety of the spacing strip attachment plate and the spacing strips fixed to the spacing strip attachment plate.Type: GrantFiled: April 8, 2019Date of Patent: June 8, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions CorporationInventors: Shunsuke Ishizaki, Ken Nagakura, Yuichiro Gunji, Norio Takahashi, Masahiro Seki
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Patent number: 10859088Abstract: Provided is a TiCx—(Ti—Mo) sliding material having a binder phase made of a Ti—Mo alloy, and a hard phase containing TiCx, wherein the TiCx—(Ti—Mo) sliding material satisfies all the following conditions: (1) a total area of the binder phase and the hard phase is 90% or more of an area of a field of view; (2) a total area of the binder phase is 15% or more and 20% or less of the area of the field of view; (3) in the binder phase, a total area of the binder phase having a diameter equivalent to 10 ?m or more and 50 ?m or less; (4) in the binder phase, a total area of the binder phase having a diameter equivalent to less than 10 ?m; and (5) a Mo concentration in the binder phase is 25 wt % or more and 35 wt % or less.Type: GrantFiled: February 23, 2017Date of Patent: December 8, 2020Assignees: EBARA CORPORATION, NIPPON TUNGSTEN CO., LTD.Inventors: Nobuaki Ito, Kenichi Sugiyama, Hiroshi Yakuwa, Norio Takahashi, Makoto Komiya, Kenji Fujimoto
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Patent number: 10770945Abstract: According to one embodiment, there is provided a rotating electrical machine coil with a conductor and an insulation layer that is provided around the conductor to cover the conductor, the rotating electrical machine coil including a linear part of the coil and a coil end that is separable from and electrically connectable to the linear part of the coil.Type: GrantFiled: January 5, 2018Date of Patent: September 8, 2020Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Hidehito Matsuzaki, Tetsushi Okamoto, Fumio Sawa, Miki Nakamura, Atsushi Yamamoto, Yo Sasaki, Masafumi Fujita, Yoshihiro Taniyama, Takashi Harakawa, Norio Takahashi, Takaaki Hirose, Hiroaki Ishizuka
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Patent number: 10749420Abstract: According to one embodiment a synchronous reluctance rotating electrical machine of an embodiment has a shaft and a rotor core. The rotor core is fixed to the shaft, in which cavity portions being formed in a projected shape toward a radially inward direction are formed into multilayers for each pole and bridges are respectively formed between the cavity portions and an outer circumferential surface. The thickness of an outermost bridge positioned outermost on the pole end side among the plurality of bridges is formed to be gradually thicker from the pole center side toward the pole end side. Among the plurality of bridges, the thickness of an intermediate bridge positioned on the pole center side of the outermost bridge with one bridge interposed therebetween is formed to be gradually thicker from the pole end side toward the pole center side.Type: GrantFiled: December 6, 2018Date of Patent: August 18, 2020Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Norio Takahashi, Katsutoku Takeuchi, Makoto Matsushita, Daisuke Misu, Toshio Hasebe
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Patent number: 10587159Abstract: According to one embodiment, a rotor includes a shaft and a rotor core. A plurality of flux barriers are formed at the rotor core. The flux barrier has a plurality of bridges, and one or more barrier regions. When a width of the bridge of a first flux barrier is defined as wa, a width of the bridge of a second flux barrier is defined as wb, a value obtained by dividing a radius of a smallest circle that is tangent to a central line of the first flux barrier by an outer radius of the rotor core is defined as a, and a value obtained by dividing a radius of a smallest circle that is tangent to a central line of the second flux barrier by the outer radius of the rotor core is defined as b, and when f(x)=(1?x{circumflex over (?)}2){circumflex over (?)}(3/2) and g(x)=(1?x{circumflex over (?)}3), a relationship of f(b)/f(a)?wb/wa?g(b)/g(a) is satisfied.Type: GrantFiled: March 11, 2019Date of Patent: March 10, 2020Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Katsutoku Takeuchi, Makoto Matsushita, Norio Takahashi, Daisuke Misu, Toshio Hasebe
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Patent number: 10530203Abstract: According to one embodiment, a rotor includes a shaft and a rotor core fixed to the shaft. A plurality of flux barriers are formed at the rotor core. Each of the flux barriers is formed with a plurality of bridges, and one or more barrier regions that have a lower permeability than a portion other than each of the flux bathers in the rotor core between the plurality of bridges. A permanent magnet is provided in at least one of the barrier regions. A magnetizing direction of the permanent magnet is directed in a direction that intersects a longitudinal direction of the flux barrier. A value of (?0×SM×Br)/(?re×tFB×wB) is within a range between 1.2 and 3.0.Type: GrantFiled: February 7, 2019Date of Patent: January 7, 2020Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Katsutoku Takeuchi, Makoto Matsushita, Norio Takahashi, Daisuke Misu, Toshio Hasebe
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Patent number: 10447126Abstract: According to one embodiment, an induction motor includes a stator and a rotor. The stator has a stator coil disposed at a stator core having a plurality of stator slots. The rotor has a rotor core rotatably provided with respect to the stator. The rotor core includes a plurality of rotor teeth and a rotor slot formed between the plurality of rotor teeth and having a rotor conductor disposed therein. The rotor teeth include a teeth main body and a flange. The teeth main body extends in a radial direction of the rotor core. The flange extends in a rotating direction of the rotor core from a distal end of the teeth main body. Then, a recessed surface is formed on at least part of an outer circumferential surface of a radial outer side in the flange.Type: GrantFiled: May 3, 2017Date of Patent: October 15, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Makoto Matsushita, Daisuke Misu, Norio Takahashi, Katsutoku Takeuchi, Fumiaki Ito, Toshio Hasebe
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Publication number: 20190312472Abstract: According to one embodiment, a stator includes spacing strips disposed to be interposed in the electromagnetic steel plates for each predetermined set of plates of the electromagnetic steel plates, each of the spacing strips extending in a radial direction of the stator iron core to form ventilation ducts, a spacing strip attachment plate which is disposed between the spacing strips and the set of plates of the electromagnetic steel plates to fix the spacing strips, and an insulating layer which covers the entirety of the spacing strip attachment plate and the spacing strips fixed to the spacing strip attachment plate.Type: ApplicationFiled: April 8, 2019Publication date: October 10, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions CorporationInventors: Shunsuke ISHIZAKI, Ken NAGAKURA, Yuichiro GUNJI, Norio TAKAHASHI, Masahiro SEKI
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Publication number: 20190207441Abstract: According to one embodiment, a rotor includes a shaft and a rotor core. A plurality of flux barriers are formed at the rotor core. The flux barrier has a plurality of bridges, and one or more barrier regions. When a width of the bridge of a first flux barrier is defined as wa, a width of the bridge of a second flux barrier is defined as wb, a value obtained by dividing a radius of a smallest circle that is tangent to a central line of the first flux barrier by an outer radius of the rotor core is defined as a, and a value obtained by dividing a radius of a smallest circle that is tangent to a central line of the second flux barrier by the outer radius of the rotor core is defined as b, and when f(x)=(1?x{circumflex over (?)}2){circumflex over (?)}(3/2) and g(x)=(1?x{circumflex over (?)}3), a relationship of f(b)/f(a)?wb/wa?g(b)/g(a) is satisfied.Type: ApplicationFiled: March 11, 2019Publication date: July 4, 2019Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Katsutoku TAKEUCHI, Makoto MATSUSHITA, Norio TAKAHASHI, Daisuke MISU, Toshio HASEBE
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Publication number: 20190173336Abstract: According to one embodiment, a rotor includes a shaft and a rotor core fixed to the shaft. A plurality of flux barriers are formed at the rotor core. Each of the flux barriers is formed with a plurality of bridges, and one or more barrier regions that have a lower permeability than a portion other than each of the flux bathers in the rotor core between the plurality of bridges. A permanent magnet is provided in at least one of the barrier regions. A magnetizing direction of the permanent magnet is directed in a direction that intersects a longitudinal direction of the flux barrier. A value of (?0×SM×Br)/(?re×tFB×wB) is within a range between 1.2 and 3.0.Type: ApplicationFiled: February 7, 2019Publication date: June 6, 2019Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Katsutoku TAKEUCHI, Makoto MATSUSHITA, Norio TAKAHASHI, Daisuke MISU, Toshio HASEBE
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Publication number: 20190113047Abstract: Provided is a TiCx—(Ti—Mo) sliding material having a binder phase made of a Ti—Mo alloy, and a hard phase containing TiCx, wherein the TiCx—(Ti—Mo) sliding material satisfies all the following conditions: (1) a total area of the binder phase and the hard phase is 90% or more of an area of a field of view; (2) a total area of the binder phase is 15% or more and 20% or less of the area of the field of view; (3) in the binder phase, a total area of the binder phase having a diameter equivalent to 10 ?m or more and 50 ?m or less; (4) in the binder phase, a total area of the binder phase having a diameter equivalent to less than 10 ?m; and (5) a Mo concentration in the binder phase is 25 wt % or more and 35 wt % or less.Type: ApplicationFiled: February 23, 2017Publication date: April 18, 2019Inventors: Nobuaki ITO, Kenichi SUGIYAMA, Hiroshi YAKUWA, Norio TAKAHASHI, Makoto KOMIYA, Kenji FUJIMOTO
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Publication number: 20190109527Abstract: According to one embodiment a synchronous reluctance rotating electrical machine of an embodiment has a shaft and a rotor core. The rotor core is fixed to the shaft, in which cavity portions being formed in a projected shape toward a radially inward direction are formed into multilayers for each pole and bridges are respectively formed between the cavity portions and an outer circumferential surface. The thickness of an outermost bridge positioned outermost on the pole end side among the plurality of bridges is formed to be gradually thicker from the pole center side toward the pole end side. Among the plurality of bridges, the thickness of an intermediate bridge positioned on the pole center side of the outermost bridge with one bridge interposed therebetween is formed to be gradually thicker from the pole end side toward the pole center side.Type: ApplicationFiled: December 6, 2018Publication date: April 11, 2019Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions CorporationInventors: Norio Takahashi, Katsutoku Takeuchi, Makoto Matsushita, Daisuke Misu, Toshio Hasebe
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Publication number: 20190052134Abstract: A stator core support device according to an embodiment includes plural types of support members that support a stator core on a stator frame disposed radially outward. These support members are combined so as to form a closed circuit portion. Then, an insulating part for electrically insulating part of the closed circuit portion is provided.Type: ApplicationFiled: July 31, 2018Publication date: February 14, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Norio TAKAHASHI, Masafumi FUJITA, Takahiro SATO, Hideyuki NAKAMURA, Ken NAGAKURA, Kazuma TSUJIKAWA