Patents by Inventor Takashi Hiyama
Takashi Hiyama 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: 20240146290Abstract: A light source drive circuit according to an embodiment includes: a first delay circuit (10) that gives, based on a clock signal, a delay to an input signal with first time resolution and a second delay circuit (20) that is connected in series to the first delay circuit, gives, based on the clock signal, a delay to an input signal with a second time resolution having accuracy different from accuracy of the first time resolution, and outputs the signal as a signal for driving a light source.Type: ApplicationFiled: March 2, 2022Publication date: May 2, 2024Inventors: TAKASHI MASUDA, DAISUKE SUZUKI, MITSUSHI TABATA, KOICHI OKAMOTO, KOUTA HIYAMA
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Publication number: 20230408090Abstract: A turbine including a turbine rotor, a turbine casing, a plurality of turbine rotor cascades, a plurality of turbine stator cascades, and a diffuser forming an exhaust gas flow path through which exhaust gas flows from one side in the axial direction toward another side, and which is provided on the other side in the axial direction from a last stage rotor cascade. The diffuser has an inner cylinder, an outer cylinder forming the exhaust gas flow path between the outer cylinder and the inner cylinder, and a strut which connects the inner cylinder and the outer cylinder in the radial direction. The outer cylinder has a first inclined surface extending outward from the inside in the radial direction from an inlet of the exhaust gas flow path toward the other side in the axial direction. The first inclined surface forms an angle of 16° to 24° with the axis.Type: ApplicationFiled: August 31, 2023Publication date: December 21, 2023Inventors: Kazuya NISHIMURA, Takashi HIYAMA
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Patent number: 11774101Abstract: A combustion tube for a gas turbine including an outlet section having a cross-section of an annular sector-shape. The outlet section includes an outer wall forming an outer peripheral boundary of the annular sector-shape, an inner wall forming an inner peripheral boundary of the annular sector-shape, and a pair of side walls forming boundaries on both sides of the annular sector-shape in a circumferential direction, respectively. The outer wall extends obliquely with respect to the inner wall such that a height of the annular sector-shape decreases toward an outlet opening of the combustion tube. A first side wall extends obliquely with respect to a second side such that a perimeter of the annular sector-shape increases toward the outlet opening of the combustion tube. An inclination angle ?1 of the first side wall with respect to the second side wall satisfies 0<?1?56.Type: GrantFiled: November 9, 2022Date of Patent: October 3, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kentaro Tokuyama, Kenji Sato, Kenta Taniguchi, Hiroyuki Sakaki, Takashi Hiyama, Satoshi Takiguchi, Yusuke Tanaka
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Publication number: 20230061373Abstract: A combustion tube for a gas turbine including an outlet section having a cross-section of an annular sector-shape. The outlet section includes an outer wall forming an outer peripheral boundary of the annular sector-shape, an inner wall forming an inner peripheral boundary of the annular sector-shape, and a pair of side walls forming boundaries on both sides of the annular sector-shape in a circumferential direction, respectively. The outer wall extends obliquely with respect to the inner wall such that a height of the annular sector-shape decreases toward an outlet opening of the combustion tube. A first side wall extends obliquely with respect to a second side such that a perimeter of the annular sector-shape increases toward the outlet opening of the combustion tube. An inclination angle ?1 of the first side wall with respect to the second side wall satisfies 0<?1?56.Type: ApplicationFiled: November 9, 2022Publication date: March 2, 2023Inventors: Kentaro TOKUYAMA, Kenji SATO, Kenta TANIGUCHI, Hiroyuki SAKAKI, Takashi HIYAMA, Satoshi TAKIGUCHI, Yusuke TANAKA
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Patent number: 11359552Abstract: A control device is a control device for a gas turbine including a plurality of combustors and is configured to select combustors to ignite in accordance with a target load on the basis of a predictor which defines a relationship between a load and the number and arrangement of combustors to ignite and a combustion temperature.Type: GrantFiled: February 11, 2020Date of Patent: June 14, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Keita Yunoki, Kei Inoue, Takashi Hiyama, Eisaku Ito
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Patent number: 11295487Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a first data set corresponding to first X-ray energy and a second data set corresponding to second X-ray energy different from the first X-ray energy, with respect to a region including a part of a subject by performing scanning using X-rays. The processing circuitry generates a scatter diagram representing a contained amount of each of reference materials at each of positions in the region on the basis of the first data set and the second data set. The processing circuitry sets weights for at least a part of the scatter diagram. The processing circuitry generates an analysis image based on the contained amounts and the weights.Type: GrantFiled: September 6, 2019Date of Patent: April 5, 2022Assignees: CANON MEDICAL SYSTEMS CORPORATION, National Cancer CenterInventors: Kotaro Sekiya, Hirofumi Kuno, Takashi Hiyama, Tsubomi Hashizume, So Tsushima, Shinsuke Tsukagoshi
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Patent number: 11215116Abstract: A turbine blade includes a blade body in which a suction side (51) facing one side in a circumferential direction and a pressure side (52) facing the other side in the circumferential direction are connected at a leading edge and a trailing edge; and a shroud provided at a tip which is a radially outer end portion of the blade body. The shroud includes a shroud body having an outer circumferential surface facing radially outward, a front end surface extending to both sides in the circumferential direction with a leading edge side of the blade body as a reference point (P1), a rear end surface extending to both sides in the circumferential direction with a trailing edge side of the blade body as a reference point (P2), and a contact surface provided on both sides in the circumferential direction, and a reinforcing portion which protrudes from the outer circumferential surface.Type: GrantFiled: February 23, 2018Date of Patent: January 4, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Takashi Hiyama, Kazuya Nishimura, Keita Takamura, Susumu Wakazono, Daigo Fujimura
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Patent number: 11125090Abstract: A first-stage stationary vane of a gas turbine includes: a vane portion including a pressure surface and a suction surface; a shroud wall portion which connects to an end portion of the vane portion and which forms a flow passage wall; a pressure-surface side fillet portion disposed on a corner portion formed by the pressure surface and a wall surface of the shroud wall portion; and a suction-surface side fillet portion disposed on a corner portion formed by the suction surface and the wall surface of the shroud wall portion. The pressure-surface side fillet portion and the suction-surface side fillet portion are separated at a leading-edge side of the vane portion so as not to connect to each other.Type: GrantFiled: September 5, 2019Date of Patent: September 21, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yasuo Miyahisa, Satoshi Hada, Susumu Wakazono, Hitoshi Kitagawa, Takashi Hiyama
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Patent number: 10982566Abstract: A turbine is equipped with a turbine rotor (21), a turbine casing, a turbine blade (24), a turbine stator and a diffuser (4A). The diffuser (4A) is equipped with an inner cylinder (41) extending along an axis, an outer cylinder covering the inner cylinder (41) from an outer circumferential side and forming an exhaust flow path (C) between the inner cylinder (41) and the outer cylinder. The inner cylinder (41) is equipped with an inclined surface (51) extending from an inner side to an outer side in the radial direction centering on the axis as going from one side to the other side in the direction of the axis. The inclined surface (51) is disposed to intersect an extension (55) obtained by extending platforms (54) of a plurality of turbine blades (24) to the other side in the direction of the axis, in a cross sectional view including the axis.Type: GrantFiled: February 28, 2018Date of Patent: April 20, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Daigo Fujimura, Takashi Hiyama, Hiroshi Watanabe
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Publication number: 20200392908Abstract: A control device is a control device for a gas turbine including a plurality of combustors and is configured to select combustors to ignite in accordance with a target load on the basis of a predictor which defines a relationship between a load and the number and arrangement of combustors to ignite and a combustion temperature.Type: ApplicationFiled: February 11, 2020Publication date: December 17, 2020Inventors: Keita Yunoki, Kei Inoue, Takashi Hiyama, Eisaku Ito
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Publication number: 20200271323Abstract: A combustion tube for a gas turbine including an outlet section having a cross-section of an annular sector-shape. The outlet section includes an outer wall forming an outer peripheral boundary of the annular sector-shape, an inner wall forming an inner peripheral boundary of the annular sector-shape, and a pair of side walls forming boundaries on both sides of the annular sector-shape in a circumferential direction, respectively. The outer wall extends obliquely with respect to the inner wall such that a height of the annular sector-shape decreases toward an outlet opening of the combustion tube. A first side wall extends obliquely with respect to a second side such that a perimeter of the annular sector-shape increases toward the outlet opening of the combustion tube. An inclination angle ?1 of the first side wall with respect to the second side wall satisfies 0<?1?56.Type: ApplicationFiled: October 18, 2018Publication date: August 27, 2020Inventors: Kentaro TOKUYAMA, Kenji SATO, Kenta TANIGUCHI, Hiroyuki SAKAKI, Takashi HIYAMA, Satoshi TAKIGUCHI, Yusuke TANAKA
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Patent number: 10738640Abstract: A shroud (22) comprises shroud bodies (22) fixed to blade tips of blades (18) mounted to a rotor body to extend in a radial direction, the shroud bodies (22) being disposed adjacent to one another in a circumferential direction, wherein each of the shroud bodies (22) includes a circumferential end surface (27, 28) that includes an abutting end surface where adjacent shroud bodies (22) abut, and an opposing surface (34) where adjacent shroud bodies (22) face one another with a clearance (32) therebetween, the opposing surface (34) being contiguous with the abutting end surface; and an outer surface (24) that includes a radially outward protruding protrusion (40) formed to extend along the opposing surface (34).Type: GrantFiled: March 11, 2015Date of Patent: August 11, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hitoshi Kitagawa, Takashi Hiyama, Daigo Fujimura
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Publication number: 20200088047Abstract: A first-stage stationary vane of a gas turbine includes: a vane portion including a pressure surface and a suction surface; a shroud wall portion which connects to an end portion of the vane portion and which forms a flow passage wall; a pressure-surface side fillet portion disposed on a corner portion formed by the pressure surface and a wall surface of the shroud wall portion; and a suction-surface side fillet portion disposed on a corner portion formed by the suction surface and the wall surface of the shroud wall portion. The pressure-surface side fillet portion and the suction-surface side fillet portion are separated at a leading-edge side of the vane portion so as not to connect to each other.Type: ApplicationFiled: September 5, 2019Publication date: March 19, 2020Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Yasuo Miyahisa, Satoshi Hada, Susumu Wakazono, Hitoshi Kitagawa, Takashi Hiyama
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Publication number: 20200082579Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a first data set corresponding to first X-ray energy and a second data set corresponding to second X-ray energy different from the first X-ray energy, with respect to a region including a part of a subject by performing scanning using X-rays. The processing circuitry generates a scatter diagram representing a contained amount of each of reference materials at each of positions in the region on the basis of the first data set and the second data set. The processing circuitry sets weights for at least a part of the scatter diagram. The processing circuitry generates an analysis image based on the contained amounts and the weights.Type: ApplicationFiled: September 6, 2019Publication date: March 12, 2020Applicants: CANON MEDICAL SYSTEMS CORPORATION, National Cancer CenterInventors: Kotaro Sekiya, Hirofumi Kuno, Takashi Hiyama, Tsubomi Hashizume, So Tsushima, Shinsuke Tsukagoshi
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Publication number: 20200056540Abstract: A turbine blade includes a blade body in which a suction side (51) facing one side in a circumferential direction and a pressure side (52) facing the other side in the circumferential direction are connected at a leading edge and a trailing edge; and a shroud provided at a tip which is a radially outer end portion of the blade body. The shroud includes a shroud body having an outer circumferential surface facing radially outward, a front end surface extending to both sides in the circumferential direction with a leading edge side of the blade body as a reference point (P1), a rear end surface extending to both sides in the circumferential direction with a trailing edge side of the blade body as a reference point (P2), and a contact surface provided on both sides in the circumferential direction, and a reinforcing portion which protrudes from the outer circumferential surface.Type: ApplicationFiled: February 23, 2018Publication date: February 20, 2020Inventors: Takashi HIYAMA, Kazuya NISHIMURA, Keita TAKAMURA, Susumu WAKAZONO, Daigo FUJIMURA
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Publication number: 20190383173Abstract: A turbine is equipped with a turbine rotor (21), a turbine casing, a turbine blade (24), a turbine stator and a diffuser (4A). The diffuser (4A) is equipped with an inner cylinder (41) extending along an axis, an outer cylinder covering the inner cylinder (41) from an outer circumferential side and forming an exhaust flow path (C) between the inner cylinder (41) and the outer cylinder. The inner cylinder (41) is equipped with an inclined surface (51) extending from an inner side to an outer side in the radial direction centering on the axis as going from one side to the other side in the direction of the axis. The inclined surface (51) is disposed to intersect an extension (55) obtained by extending platforms (54) of a plurality of turbine blades (24) to the other side in the direction of the axis, in a cross sectional view including the axis.Type: ApplicationFiled: February 28, 2018Publication date: December 19, 2019Inventors: Daigo FUJIMURA, Takashi HIYAMA, Hiroshi WATANABE
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Publication number: 20160369643Abstract: A shroud (22) comprises shroud bodies (22) fixed to blade tips of blades (18) mounted to a rotor body to extend in a radial direction, the shroud bodies (22) being disposed adjacent to one another in a circumferential direction, wherein each of the shroud bodies (22) includes a circumferential end surface (27, 28) that includes an abutting end surface where adjacent shroud bodies (22) abut, and an opposing surface (34) where adjacent shroud bodies (22) face one another with a clearance (32) therebetween, the opposing surface (34) being contiguous with the abutting end surface; and an outer surface (24) that includes a radially outward protruding protrusion (40) formed to extend along the opposing surface (34).Type: ApplicationFiled: March 11, 2015Publication date: December 22, 2016Inventors: Hitoshi KITAGAWA, Takashi HIYAMA, Daigo FUJIMURA
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Patent number: 8956118Abstract: Provided is an impeller of a centrifugal compressor including: a hub; a plurality of blades protruding from a surface of the hub, wherein a passage is formed by the hub and a blade being adjacent with the hub, so that a fluid, flowing in along an axial direction at an inner circumferential side in a radial direction, is flowed out toward an outer circumferential side in a radial direction; each of the plurality of blades includes a main body part and a leading edge, the main body part including a pressure side and a suction side; an angle between a component central line of the main body part and the axial direction increases from an inner end toward an outer end; and a radius of curvature at a central position, intersecting with the component central line of the leading edge, decreases from the inner end toward the outer end.Type: GrantFiled: February 19, 2010Date of Patent: February 17, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tokiya Wakai, Akihiro Nakaniwa, Yasuro Sakamoto, Takashi Hiyama
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Patent number: 8625963Abstract: A video player for limiting the view by a viewer not satisfying the view allowance condition allowing a young person to view a specific video. When a limited video viewing of which by a viewer not satisfying a view allowance condition is limited by limiting the broadcast time zone, e.g., by limiting the broadcast time zone to the midnight of when the young people are asleep is recorded, the video player inhibits reproduction of the limited video in a time zone other than the time zone from the recording start time of the limited video to a predetermined time. Since the limited video can be reproduced only in the time zone from the originally broadcast time to a predetermined time, any viewer not satisfying the view allowance condition is prevented from viewing a limited video.Type: GrantFiled: November 1, 2005Date of Patent: January 7, 2014Assignee: Sharp Kabushiki KaishaInventor: Takashi Hiyama
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Publication number: 20120121432Abstract: Provided is an impeller of a centrifugal compressor including: a hub; a plurality of blades protruding from a surface of the hub, wherein a passage is formed by the hub and a blade being adjacent with the hub, so that a fluid, flowing in along an axial direction at an inner circumferential side in a radial direction, is flowed out toward an outer circumferential side in a radial direction; each of the plurality of blades includes a main body part and a leading edge, the main body part including a pressure side and a suction side; an angle between a component central line of the main body part and the axial direction increases from an inner end toward an outer end; and a radius of curvature at a central position, intersecting with the component central line of the leading edge, decreases from the inner end toward the outer end.Type: ApplicationFiled: February 19, 2010Publication date: May 17, 2012Inventors: Tokiya Wakai, Akihiro Nakaniwa, Yasuro Sakamoto, Takashi Hiyama