Patents by Inventor Yoshiyuki Okabe
Yoshiyuki Okabe 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: 11131246Abstract: A gas turbine includes a rotor that has a rotor disk at each of a plurality of stages and a plurality of blades fixed to the respective stages, a casing, a plurality of vanes fixed to the casing, and an annular member fixed to a radially inner side of each of the vanes. The rotor disk has a seal arm. The annular member has an outer opposing portion that is radially opposed to the seal arm. The gas turbine further includes a seal fin that protrudes from the outer opposing portion toward the seal arm, a first cavity that is defined in the annular member and extends in a circumferential direction to straddle at least two of the vanes, a second cavity that is on a radially inner side of the first cavity, and a plurality of compressed air discharge paths that connect the first cavity to the second cavity.Type: GrantFiled: April 15, 2019Date of Patent: September 28, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Koichiro Iida, Yoshiyuki Okabe, Yoshiko Oya
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Patent number: 11066998Abstract: A compressor rotor includes a first outer cavity formed in a rotor main body and into which air on a high-pressure side of blades is to be introduced, a first inner cavity formed in the rotor main body on an inner side in a radial direction of the first outer cavity; and a first communication passage which connects the first outer cavity and the first inner cavity to each other in the radial direction of the first outer cavity. Along an entire length of the first communication passage from the first outer cavity to the first inner cavity, the first communication passage is inclined toward a forward side of a rotation direction of the rotor main body.Type: GrantFiled: March 30, 2017Date of Patent: July 20, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshiko Oya, Yoshiyuki Okabe, Masato Araki
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Patent number: 11021999Abstract: A gas turbine includes a compressor, a combustor, and a turbine. The compressor, the combustor, and the turbine are arranged along an extending direction of a rotating shaft. The gas turbine also includes a combustor casing housing the combustor and a turbine casing housing the turbine. The combustor casing and the turbine casing are joined to each other via respective flanges thereof projecting toward the outside. The gas turbine further includes a projection part on an inner face of the combustor casing. The projection part projects toward the inside in a radial direction in at least part of a range in the extending direction of the rotating shaft between the flanges and an end of a combustion chamber on the compressor side in the combustor.Type: GrantFiled: April 1, 2016Date of Patent: June 1, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.Inventors: Yoshiyuki Okabe, Shigenari Horie, Tadayuki Hanada
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Publication number: 20200271017Abstract: A gas turbine includes a compressor, a combustor, and a turbine. The compressor, the combustor, and the turbine are arranged along an extending direction of a rotating shaft. The gas turbine also includes a combustor casing housing the combustor and a turbine casing housing the turbine. The combustor casing and the turbine casing are joined to each other via respective flanges thereof projecting toward the outside. The gas turbine further includes a projection part on an inner face of the combustor casing. The projection part projects toward the inside in a radial direction in at least part of a range in the extending direction of the rotating shaft between the flanges and an end of a combustion chamber on the compressor side in the combustor.Type: ApplicationFiled: April 1, 2016Publication date: August 27, 2020Inventors: Yoshiyuki OKABE, Shigenari HORIE, Tadayuki HANADA
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Patent number: 10738892Abstract: A rotary machine includes a seal device capable of restricting a flow of a fluid in a clearance between a stationary member and a rotational member. The seal device includes a pressure loss element mounted to the stationary member, a first non-contact type seal protruding from the rotational member toward the pressure loss element and facing the pressure loss element via a first gap, and a second non-contact type seal protruding from the stationary member toward the rotational member, facing the rotational member via a second gap, and being positioned on one side of the pressure loss element in a flow direction of the fluid. The seal device also includes a contact type seal protruding from the stationary member toward the rotational member and being disposed downstream of the pressure loss element and the second non-contact type seal in the flow direction of the fluid.Type: GrantFiled: November 20, 2015Date of Patent: August 11, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Masato Araki, Yoshiyuki Okabe, Ryosuke Mito, Keita Takamura, Shinya Hashimoto
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Patent number: 10641118Abstract: A sealing apparatus includes a sealing portion configured to be positioned between a platform of a turbine blade and an inner shroud of a turbine vane of a turbine, and an acoustic damper having a closed space portion which is configured to communicate, via an opening, with a disc cavity configured to be positioned between the turbine blade and the turbine vane.Type: GrantFiled: December 22, 2015Date of Patent: May 5, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazufumi Ikeda, Hitoshi Kitagawa, Masato Araki, Yoshiyuki Okabe
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Publication number: 20190331026Abstract: A gas turbine includes the rotor that has a rotor disk at each of a plurality of stages and a plurality of blades fixed to the respective stages, a casing, the plurality of vanes fixed to the casing, and an annular member fixed to a radially inner side of each of the vanes. The rotor disk has a seal arm. The annular member has an outer opposing portion that radially opposed to a seal arm. The gas turbine further includes a seal fin that protrudes from the outer opposing portion toward the seal arm, a first cavity that is formed in the annular member and extends in a circumferential direction to straddle at least two vanes, a second cavity that is provided on the radially inner side of the first cavity, and a plurality of compressed air discharge paths that connect the first cavity to the second cavity.Type: ApplicationFiled: April 15, 2019Publication date: October 31, 2019Inventors: Koichiro IIDA, Yoshiyuki OKABE, Yoshiko OYA
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Publication number: 20190072037Abstract: A compressor rotor includes a first outer cavity formed in a rotor main body and into which air on a high-pressure side of a rotating blades is introduced, a first inner cavity formed on an inner side in a radial direction of the first outer cavity in the rotor main body; and a first communication passage communicating the first outer cavity with the first inner cavity in the radial direction. Along the entirely length of the first communication passage from the first outer cavity to the first inner cavity, the first communication passage is inclined toward a forward side of a rotation direction of the rotor main body.Type: ApplicationFiled: March 30, 2017Publication date: March 7, 2019Inventors: Yoshiko OYA, Yoshiyuki OKABE, Masato ARAKI
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Publication number: 20180073378Abstract: In a sealing apparatus for a gas turbine, a gas turbine, and an aircraft engine: a first sealing portion provided between a platform of a turbine blade and an inner shroud of a turbine vane of a turbine, and an acoustic damper having a closed space portion communicating, via an opening, with a disc cavity between the turbine blade and the turbine vane are provided. Accordingly, improvement in gas turbine efficiency is aimed for, by reduction of entrance of combustion gas into a turbine body being enabled with a small amount of purge air.Type: ApplicationFiled: December 22, 2015Publication date: March 15, 2018Inventors: Kazufumi IKEDA, Hitoshi KITAGAWA, Masato ARAKI, Yoshiyuki OKABE
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Patent number: 9879786Abstract: A rotary machine includes turbine moving blades (50); a casing (10) covering the turbine moving blades (50) so as to define a gap at an outer circumferential side of the turbine moving blades; a leaf seal (70) having a seal body (71) that is disposed in the gap so as to protrude radially inward from the casing (10) and is capable of coming into contact with the turbine moving blades (50), and a high-pressure-side plate member (73) that is disposed along a face facing a high pressure side of the seal body (71); and a swirling flow inhibitor (80) that is provided on the high pressure side of the leaf seal (70) in the gap and inhibits a swirl flow flowing through the gap in a circumferential direction.Type: GrantFiled: August 23, 2013Date of Patent: January 30, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yoshihiro Kuwamura, Koichi Ishizaka, Yoshiyuki Okabe, Kazuyuki Matsumoto, Hiroharu Oyama, Hidekazu Uehara, Yoshinori Tanaka, Shin Nishimoto
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Publication number: 20170370476Abstract: A rotary machine includes a seal device capable of restricting a flow of a fluid in a clearance between a stationary member and a rotational member. The seal device includes a pressure loss element mounted to the stationary member, a first non-contact type seal protruding from the rotational member toward the pressure loss element and facing the pressure loss element via a first gap, and a second non-contact type seal protruding from the stationary member toward the rotational member, facing the rotational member via a second gap, and being positioned on one side of the pressure loss element in a flow direction of the fluid. The seal device also includes a contact type seal protruding from the stationary member toward the rotational member and being disposed downstream of the pressure loss element and the second non-contact type seal in the flow direction of the fluid.Type: ApplicationFiled: November 20, 2015Publication date: December 28, 2017Inventors: Masato ARAKI, Yoshiyuki OKABE, Ryosuke MITO, Keita TAKAMURA, Shinya HASHIMOTO
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Publication number: 20150184750Abstract: A rotary machine includes turbine moving blades (50); a casing (10) covering the turbine moving blades (50) so as to define a gap at an outer circumference side of the turbine moving blades; a leaf seal (70) having a seal body (71) that is disposed in the gap so as to protrude radially inward from the casing (10) and is capable of coming into contact with the turbine moving blades (50), and a high-pressure-side plate member (73) that is disposed along a face facing a high pressure side of the seal body (71); and a swirling flow inhibitor (80) that is provided on the high pressure side of the leaf seal (70) in the gap and inhibits a swirl flow flowing through the gap in a circumferential direction.Type: ApplicationFiled: August 23, 2013Publication date: July 2, 2015Inventors: Yoshihiro Kuwamura, Koichi Ishizaka, Yoshiyuki Okabe, Kazuyuki Matsumoto, Hiroharu Oyama, Hidekazu Uehara, Yoshinori Tanaka, Shin Nishimoto
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Patent number: 8183616Abstract: Provided is a technology capable of reducing parasitic capacitance of a capacitor while reducing the space occupied by the capacitor. A stacked structure is obtained by forming, over a capacitor composed of a lower electrode, a capacitor insulating film and an intermediate electrode, another capacitor composed of the intermediate electrode, another capacitor insulating film and an upper electrode. Since the intermediate electrode has a step difference, each of the distance between the intermediate electrode and lower electrode and the distance between the intermediate electrode and upper electrode in a region other than the capacitor formation region becomes greater than that in the capacitor formation region. For example, the lower electrode is brought into direct contact with the capacitor insulating film in the capacitor formation region, while the lower electrode is not brought into direct contact with the capacitor insulating film in the region other than the capacitor formation region.Type: GrantFiled: September 1, 2010Date of Patent: May 22, 2012Assignee: Renesas Electronics CorporationInventors: Tsuyoshi Fujiwara, Toshinori Imai, Takeshi Saikawa, Yoshinori Kawasaki, Mitsuhiro Toya, Shunji Mori, Yoshiyuki Okabe
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Publication number: 20100320568Abstract: Provided is a technology capable of reducing parasitic capacitance of a capacitor while reducing the space occupied by the capacitor. A stacked structure is obtained by forming, over a capacitor composed of a lower electrode, a capacitor insulating film and an intermediate electrode, another capacitor composed of the intermediate electrode, another capacitor insulating film and an upper electrode. Since the intermediate electrode has a step difference, each of the distance between the intermediate electrode and lower electrode and the distance between the intermediate electrode and upper electrode in a region other than the capacitor formation region becomes greater than that in the capacitor formation region. For example, the lower electrode is brought into direct contact with the capacitor insulating film in the capacitor formation region, while the lower electrode is not brought into direct contact with the capacitor insulating film in the region other than the capacitor formation region.Type: ApplicationFiled: September 1, 2010Publication date: December 23, 2010Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Tsuyoshi FUJIWARA, Toshinori IMAI, Takeshi SAIKAWA, Yoshihiro KAWASAKI, Mitsuhiro TOYA, Shunji MORI, Yoshiyuki OKABE
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Publication number: 20100013568Abstract: Provided is a technology capable of reducing parasitic capacitance of a capacitor while reducing the space occupied by the capacitor. A stacked structure is obtained by forming, over a capacitor composed of a lower electrode, a capacitor insulating film and an intermediate electrode, another capacitor composed of the intermediate electrode, another capacitor insulating film and an upper electrode. Since the intermediate electrode has a step difference, each of the distance between the intermediate electrode and lower electrode and the distance between the intermediate electrode and upper electrode in a region other than the capacitor formation region becomes greater than that in the capacitor formation region. For example, the lower electrode is brought into direct contact with the capacitor insulating film in the capacitor formation region, while the lower electrode is not brought into direct contact with the capacitor insulating film in the region other than the capacitor formation region.Type: ApplicationFiled: September 24, 2009Publication date: January 21, 2010Applicant: RENESAS TECHNOLOGY CORP.Inventors: Tsuyoshi FUJIWARA, Toshinori IMAI, Takeshi SAIKAWA, Yoshihiro KAWASAKI, Mitsuhiro TOYA, Shunji MORI, Yoshiyuki OKABE
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Publication number: 20080139307Abstract: A manipulation object 400 displayed on a television monitor 5 performs the same various motions as various motions which a player performs on a mat 2 (a motionless state, a walking motion, a running motion, a side stepping motion, a jumping motion and a squatting motion). Accordingly, the player can have an experience as if he were actually moving in a virtual space through the manipulation object 400 by performing these motions on the mat 2.Type: ApplicationFiled: December 26, 2005Publication date: June 12, 2008Inventors: Hiromu Ueshima, Akimasa Konishi, Yoshiyuki Okabe
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Patent number: 7369817Abstract: A pin layout which prevents degradation of a frequency characteristic of a low noise amplifier and a receiving mixer included in a semiconductor integrated circuit for dual-band transmission/reception wherein the circuit of the low noise amplifier is provided at a position where the distance from the end of a pin outside the package of the low noise amplifier to the pad is the shortest; ground pins of two low noise amplifiers and the high frequency signal pins are arranged respectively so as not to be adjacent to each other; the power source and ground pin of the low noise amplifier, and the power source and ground pin of the bias circuit are respectively separated; and high frequency signal wires do not intersect each other.Type: GrantFiled: December 16, 2004Date of Patent: May 6, 2008Assignee: Renesas Technology Corp.Inventors: Kumiko Takikawa, Satoshi Tanaka, Takashi Hashimoto, Yoshiyuki Okabe
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Publication number: 20060289917Abstract: Provided is a technology capable of reducing parasitic capacitance of a capacitor while reducing the space occupied by the capacitor. A stacked structure is obtained by forming, over a capacitor composed of a lower electrode, a capacitor insulating film and an intermediate electrode, another capacitor composed of the intermediate electrode, another capacitor insulating film and an upper electrode. Since the intermediate electrode has a step difference, each of the distance between the intermediate electrode and lower electrode and the distance between the intermediate electrode and upper electrode in a region other than the capacitor formation region becomes greater than that in the capacitor formation region. For example, the lower electrode is brought into direct contact with the capacitor insulating film in the capacitor formation region, while the lower electrode is not brought into direct contact with the capacitor insulating film in the region other than the capacitor formation region.Type: ApplicationFiled: June 23, 2006Publication date: December 28, 2006Inventors: Tsuyoshi Fujiwara, Toshinori Imai, Takeshi Saikawa, Yoshihiro Kawasaki, Mitsuhiro Toya, Shunji Mori, Yoshiyuki Okabe
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Publication number: 20050101282Abstract: A pin layout which prevents degradation of a frequency characteristic of a low noise amplifier and a receiving mixer included in a semiconductor integrated circuit for dual-band transmission/reception wherein the circuit of the low noise amplifier is provided at a position where the distance from the end of a pin outside the package of the low noise amplifier to the pad is the shortest; ground pins of two low noise amplifiers and the high frequency signal pins are arranged respectively so as not to be adjacent to each other; the power source and ground pin of the low noise amplifier, and the power source and ground pin of the bias circuit are respectively separated; and high frequency signal wires do not intersect each other.Type: ApplicationFiled: December 16, 2004Publication date: May 12, 2005Inventors: Kumiko Takikawa, Satoshi Tanaka, Takashi Hashimoto, Yoshiyuki Okabe
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Patent number: 6847108Abstract: A pin layout which prevents degradation of a frequency characteristic of a low noise amplifier and a receiving mixer included in a semiconductor integrated circuit for dual-band transmission/reception wherein the circuit of the low noise amplifier is provided at a position where the distance from the end of a pin outside the package of the low noise amplifier to the pad is the shortest; ground pins of two low noise amplifiers and the high frequency signal pins are arranged respectively so as not to be adjacent to each other; the power source and ground pin of the low noise amplifier, and the power source and ground pin of the bias circuit are respectively separated; and high frequency signal wires do not intersect each other.Type: GrantFiled: March 30, 2004Date of Patent: January 25, 2005Assignee: Hitachi, Ltd.Inventors: Kumiko Takikawa, Satoshi Tanaka, Takashi Hashimoto, Yoshiyuki Okabe