Patents by Inventor Tadashi Yoshida
Tadashi Yoshida 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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Rotary machine state observation device, rotary machine, and rotary machine state observation method
Patent number: 10648477Abstract: A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low-speed sampling period and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.Type: GrantFiled: October 6, 2015Date of Patent: May 12, 2020Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tadashi Yoshida, Shinji Ogawa, Koichi Sakamoto, Yukihiro Iwasa -
Publication number: 20200056956Abstract: A contact vibration detection device 100 for detecting contact vibration due to contact between a rotational shaft 12 and a stationary part 13 includes: a rotation waveform determination unit 101 configured to determine a rotation waveform of the rotational shaft 12 based on displacement of the rotational shaft 12 during rotation; a parameter change detection unit 102 configured to detect a change in a parameter of at least one of an effective value of the rotation waveform or a phase angle of the rotation waveform; and a contact vibration determination unit 103 configured to determine whether the contact vibration occurs based on presence or absence of the change in the parameter.Type: ApplicationFiled: January 17, 2019Publication date: February 20, 2020Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tadashi Yoshida, Ryoji Sasaki, Hidetaka Nishimura, Takeshi Tsuji
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Patent number: 10384395Abstract: The three-dimensional object building apparatus includes a powder delivering unit that delivers a powder on an object building area, a powder flattening device that flattens the powder delivered from the powder delivering unit to form a powder layer, and a light beam radiating unit that is disposed above the object building area and radiates a light beam on the powder layer to sinter or melt solidify the powder for building an object. The three-dimensional object building apparatus also includes a transferring mechanism that moves the light beam radiating unit in three-dimensional directions, and a shroud that moves integrally with the light beam radiating unit and surrounds a space above an area of the powder layer that is smaller than the object building area around a radiation of the light beam. The powder delivering unit and the powder flattening device move integrally with the light beam radiating unit.Type: GrantFiled: July 6, 2017Date of Patent: August 20, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Takaharu Echigo, Akio Shimoda, Keisuke Takahashi, Kazunori Kawai, Tadashi Yoshida
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Patent number: 10316692Abstract: A method of suppressing shaft vibration of a turbocharger capable of being driven by a motor includes: a specific-vibration-state determination step of determining whether a rotor shaft of the turbocharger is in a specific vibration state in which a magnitude of shaft vibration of the rotor shaft is, or is likely to be, greater than a predetermined magnitude; an excited state determination step of determining whether the motor is in an excited state in which an exciting voltage is applied to the motor; and a vibration suppression execution step of applying the exciting voltage to the motor if it is determined that the rotor shaft is in the specific vibration state in the specific-vibration-state determination step and it is determined that the motor is not in the excited state in the excited state determination step.Type: GrantFiled: December 20, 2016Date of Patent: June 11, 2019Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tadashi Yoshida, Musashi Sakamoto, Ryoji Sasaki, Yoshihisa Ono, Hidetaka Nishimura, Takeshi Tsuji
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Publication number: 20180171823Abstract: A method of suppressing shaft vibration of a turbocharger capable of being driven by a motor includes: a specific-vibration-state determination step of determining whether a rotor shaft of the turbocharger is in a specific vibration state in which a magnitude of shaft vibration of the rotor shaft is, or is likely to be, greater than a predetermined magnitude; an excited state determination step of determining whether the motor is in an excited state in which an exciting voltage is applied to the motor; and a vibration suppression execution step of applying the exciting voltage to the motor if it is determined that the rotor shaft is in the specific vibration state in the specific-vibration-state determination step and it is determined that the motor is not in the excited state in the excited state determination step.Type: ApplicationFiled: December 20, 2016Publication date: June 21, 2018Inventors: Tadashi Yoshida, Musashi Sakamoto, Ryoji Sasaki, Yoshihisa Ono, Hidetaka Nishimura, Takeshi Tsuji
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ROTARY MACHINE STATE OBSERVATION DEVICE, ROTARY MACHINE, AND ROTARY MACHINE STATE OBSERVATION METHOD
Publication number: 20170342993Abstract: A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low-speed sampling period and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.Type: ApplicationFiled: October 6, 2015Publication date: November 30, 2017Inventors: Tadashi Yoshida, Shinji Ogawa, Koichi Sakamoto, Yukihiro Iwasa -
Publication number: 20170297110Abstract: The three-dimensional object building apparatus includes a powder delivering unit that delivers a powder on an object building area, a powder flattening device that flattens the powder delivered from the powder delivering unit to form a powder layer, and a light beam radiating unit that is disposed above the object building area and radiates a light beam on the powder layer to sinter or melt solidify the powder for building an object. The three-dimensional object building apparatus also includes a transferring mechanism that moves the light beam radiating unit in three-dimensional directions, and a shroud that moves integrally with the light beam radiating unit and surrounds a space above an area of the powder layer that is smaller than the object building area around a radiation of the light beam. The powder delivering unit and the powder flattening device move integrally with the light beam radiating unit.Type: ApplicationFiled: July 6, 2017Publication date: October 19, 2017Inventors: Takaharu Echigo, Akio Shimoda, Keisuke Takahashi, Kazunori Kawai, Tadashi Yoshida
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Patent number: 9731450Abstract: The three-dimensional object building apparatus includes a powder delivering unit that delivers a powder on an object building area, a powder flattening device that flattens the powder delivered from the powder delivering unit to form a powder layer, and a light beam radiating unit that is disposed above the object building area and radiates a light beam on the powder layer to sinter or melt solidify the powder for building an object. The three-dimensional object building apparatus also includes a transferring mechanism that moves the light beam radiating unit in three-dimensional directions, and a shroud that moves integrally with the light beam radiating unit and surrounds a space above an area of the powder layer that is smaller than the object building area around a radiation of the light beam. The powder delivering unit and the powder flattening device move integrally with the light beam radiating unit.Type: GrantFiled: December 17, 2013Date of Patent: August 15, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Takaharu Echigo, Akio Shimoda, Keisuke Takahashi, Kazunori Kawai, Tadashi Yoshida
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Publication number: 20160321835Abstract: An image processing device includes a pixel shader for deciding a color of each of a plurality of pixels forming a diagram that is defined by three or more first coordinate system vertices on a two-dimensional picture, and a determinator for determining whether or not shading processing on a per block basis is able to be performed, for a block including some of the plurality of pixels. The pixel shader decides, in a case where the determinator determines that the shading processing on a per block basis is able to be performed, a representative color of the block by performing the shading processing on a per block basis on the block, and decides, in a case where the determinator determines that the shading processing on a per block basis is not able to be performed, a color of each of the plurality of pixels by performing shading processing on a per pixel basis on the each of the plurality of pixels.Type: ApplicationFiled: April 1, 2016Publication date: November 3, 2016Inventor: TADASHI YOSHIDA
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Publication number: 20160218339Abstract: An assembled cell is formed by laminating a plurality of rectangular secondary batteries in a thickness direction and interposing a spacer between the rectangular secondary batteries. The rectangular secondary battery includes an electrode group in which positive and negative electrodes are wound, and the electrode group is housed in the battery container formed in a flat box shape. The spacer includes a contact part which contacts with a width direction end region of a wide side surface of the battery container, a facing part which faces a width direction intermediate region of the wide side surface, and an inclined surface which is adjacent to both ends of the facing part in a width direction of the wide side surface. The inclined surface is inclined such that a thickness of the spacer becomes asymptotically smaller in a direction toward the width direction intermediate region from the width direction end region.Type: ApplicationFiled: August 6, 2014Publication date: July 28, 2016Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Hitoshi NISHIMORI, Tadashi YOSHIDA, Jun OYA
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Patent number: 9325040Abstract: An electrical storage apparatus 1 includes a plurality of battery modules 10 and cooling passages A, B for cooling each of the battery modules 10. The cooling passage A is configured so as to cool all battery modules 10 mounted in the electrical storage apparatus 1 at all times during charging. The cooling passage B is configured so as to cool only a new battery module 10a as a replacement during charging. This enables the battery module 10a having a temperature during charging higher than that of a battery module 10 yet to be replaced to be subject to forced cooling, thereby preventing performance of the battery module 10a from being degraded.Type: GrantFiled: September 30, 2010Date of Patent: April 26, 2016Assignee: Hitachi, Ltd.Inventors: Kou Takahashi, Hidekazu Fujimura, Tadashi Yoshida
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Patent number: 9242497Abstract: An inkjet recording medium, comprising an ink-receiving layer containing a pigment, a binder and an inkjet ink-fixing agent comprising a cationic compound disposed on at least one surface of a base paper, wherein 50% or more by weight of calcium carbonate is contained in terms of a solid content based on a total amount of the pigment contained in the ink-receiving layer; 75 to 90 parts by weight of the pigment, 1 to 10 parts by weight of the binder and 5 to 20 parts by weight of the inkjet ink-fixing agent are contained based on 100 parts by weight of the ink-receiving layer; the drop water absorbency of the ink-receiving layer (according to the drop water absorbency defined in Japan Technical Association of the Pulp and Paper Industry, J. TAPPI, No. 32-2:2000 except that a drop water amount is 0.001 ml) is 200 seconds or less; and a Stockigt sizing degree according to JIS-P-8122 for the inkjet recording medium is 5 seconds or less.Type: GrantFiled: July 29, 2013Date of Patent: January 26, 2016Assignee: Nippon Paper Industries Co., Ltd.Inventors: Misaki Watanabe, Akinobu Chatani, Satoshi Tsuda, Tadashi Yoshida, Takanori Otsuhata, Koji Kutsuwa
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Publication number: 20150298479Abstract: An inkjet recording medium, comprising an ink-receiving layer containing a pigment, a binder and an inkjet ink-fixing agent comprising a cationic compound disposed on at least one surface of a base paper, wherein 50% or more by weight of calcium carbonate is contained in terms of a solid content based on a total amount of the pigment contained in the ink-receiving layer; 75 to 90 parts by weight of the pigment, 1 to 10 parts by weight of the binder and 5 to 20 parts by weight of the inkjet ink-fixing agent are contained based on 100 parts by weight of the ink-receiving layer; the drop water absorbency of the ink-receiving layer (according to the drop water absorbency defined in Japan Technical Association of the Pulp and Paper Industry, J. TAPPI, No. 32-2:2000 except that a drop water amount is 0.001 ml) is 200 seconds or less; and a Stockigt sizing degree according to WS-P-8122 for the inkjet recording medium is 5 seconds or less.Type: ApplicationFiled: July 29, 2013Publication date: October 22, 2015Inventors: Misaki Watanabe, Akinobu Chatani, Satoshi Tsuda, Tadashi Yoshida, Takanori Otsuhata, Koji Kutsuwa
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Patent number: 8991570Abstract: A cylinder apparatus includes a flow path which is provided in a valve member and through which a fluid circulates when a rod is moved; a disk valve which opens and closes the flow path; and a spring member which presses the disk valve in an axial direction. The spring member includes a first spring which comes into contact with the disk valve in a state in which the disk valve closes the flow path, and a second spring which comes into contact with the disk valve in a state in which the disk valve opens the flow path.Type: GrantFiled: July 27, 2012Date of Patent: March 31, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Masahiro Ashiba, Tadashi Yoshida
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Publication number: 20150043466Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).Type: ApplicationFiled: March 8, 2013Publication date: February 12, 2015Inventors: Tadashi Yoshida, Ayako Horiuchi, Takashi Iwai, Yoshihiko Ogawa, Akihiko Nishio
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Patent number: 8879443Abstract: Disclosed are a terminal, a base station, a response method, and a retransmission control method, which are capable of switching the response signal transmission method while preventing throughput degradation and without increasing the number of signaling bits. A bundling determination unit (132) of a terminal (100) determines parameters that denote the allocated resource quantities that are allocated thereto from a base station (200), or in other words, a downstream band that is included in a bundling group and a downstream band that is not included in the bundling group, from among a plurality of downstream bands on the basis of base station transmission parameters. Specifically, a degree of resource share (Xn) that is allocated from each respective downstream band to the terminal (100) is employed in the base station transmission parameters.Type: GrantFiled: February 3, 2011Date of Patent: November 4, 2014Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tadashi Yoshida, Masaru Fukuoka, Takashi Iwai, Akihiko Nishio, Seigo Nakao, Masayuki Hoshino, Daichi Imamura
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Patent number: 8802274Abstract: A secondary battery module comprises a casing in which vents are formed so as to allow outside air to flow in a vertical direction and one or more partition walls partition an internal space of the casing into a plurality of cell chambers. The partition wall comprises the pipe member as communication path to communicate between the cell chambers and the outside of the casing so as to allow outside air to be introduced into the internal space of the cell chambers. The secondary battery module further comprises a plurality of rod-shaped battery cells housed in the cell chambers and beams to support the battery cells along a horizontal direction and at predetermined intervals in the vertical direction in the cell chambers such that a cell axis direction is perpendicular to the vertical direction and extends along the partition wall.Type: GrantFiled: February 7, 2011Date of Patent: August 12, 2014Assignee: Hitachi, Ltd.Inventors: Tadashi Yoshida, Katsunori Nishimura
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Publication number: 20140175708Abstract: The three-dimensional object building apparatus includes a powder delivering unit that delivers a powder on an object building area, a powder flattening device that flattens the powder delivered from the powder delivering unit to form a powder layer, and a light beam radiating unit that is disposed above the object building area and radiates a light beam on the powder layer to sinter or melt solidify the powder for building an object. The three-dimensional object building apparatus also includes a transferring mechanism that moves the light beam radiating unit in three-dimensional directions, and a shroud that moves integrally with the light beam radiating unit and surrounds a space above an area of the powder layer that is smaller than the object building area around a radiation of the light beam. The powder delivering unit and the powder flattening device move integrally with the light beam radiating unit.Type: ApplicationFiled: December 17, 2013Publication date: June 26, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Takaharu Echigo, Akio Shimoda, Keisuke Takahashi, Kazunori Kawai, Tadashi Yoshida
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Patent number: 8723928Abstract: It is possible to perform three-dimensional shape measurement with easy processing, regardless of whether an object is moving or not. An image capturing unit (103) captures a captured image (I) including both a real image (I2) of the object (113R) and a mirror (101). A light amount changing unit (63a) changes a light amount of a virtual image (I1). An image separating unit (captured image separating unit 104) specifies, as a virtual image (Ib1), an image in a region having a different light amount (R1), in a captured image (Ia) in which the light amount is changed and a captured image (Ib) in which the light amount is not changed, and specifies an image in a region having the same light amount (R2) as a real image (Ib2). A three dimensional shape is reconstructed from the real image and so on that are specified.Type: GrantFiled: July 10, 2009Date of Patent: May 13, 2014Assignee: Panasonic CorporationInventors: Takaaki Moriyama, Akira Uesaki, Tadashi Yoshida, Yudai Ishibashi
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Patent number: 8669394Abstract: The present invention relates to a method for decomposing and recovering an isocyanate compound, which comprises: continuously mixing and dispersing into water at high pressure and high temperature an isocyanate compound having at least one isocyanate group or group derived from an isocyanate group in a molten state or solution state, supplying a liquid mixture containing the isocyanate compound and the water at high pressure and high temperature continuously to a reactor, followed by subjecting the isocyanate compound to a decomposition reaction in the reactor, and recovering a raw material for the isocyanate compound or a derivative thereof; and an apparatus for decomposing and recovering an isocyanate compound, which comprises: a reactor which brings water at high pressure and high temperature into contact with an isocyanate compound having at least one isocyanate group or group derived from an isocyanate group to cause a decomposition reaction, a water supply line which continuously supplies the water atType: GrantFiled: April 14, 2011Date of Patent: March 11, 2014Assignees: Kobe Steel, Ltd., Mitsui Chemicals, Inc.Inventors: Fumihiko Kasuya, Masahiro Yamagata, Shigetoshi Suzuki, Tadashi Yoshida