Patents by Inventor Tomoaki Inoue
Tomoaki Inoue 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).
-
Patent number: 8729887Abstract: A rotation angle sensor comprises: a resolver stator including an excitation coil for receiving an excitation signal and a detection coil (a sine wave coil and a cosine wave coil) for outputting a detection signal; and a resolver rotor rotatably placed to face the stator. The resolver stator is formed on a stator flat plate. The resolver rotor is made of a flat-shaped rotor flat plate. The stator flat plate and the rotor flat plate are placed in parallel to face each other. The rotor flat plate is formed with a cutout.Type: GrantFiled: November 1, 2010Date of Patent: May 20, 2014Assignee: Aisan Kogyo Kabushiki KaishaInventors: Shinya Suzuki, Takehide Nakamura, Tomoaki Inoue, Ryojiro Kanemitsu
-
Patent number: 8459932Abstract: A bearing device of a gas turbine power generation equipment provides damping vibration of a shaft and lubricates and cools the bearing main body. The bearing devices have sleeves provided on the outer circumference sides of the bearing main bodies and bearing housings holding the respective sleeves via O-rings while each forming an annular clearance passage between each of the outer circumferences of the sleeves and a corresponding one of the bearing housings. The bearing housing has a feed-water hole communicating with the clearance passage and adapted to feed water thereto. The sleeve has a lead water hole communicating with the clearance passage and is adapted to lead water to the bearing main body, and a discharge hole which communicates with the clearance passage and is adapted to discharge water therefrom.Type: GrantFiled: August 18, 2006Date of Patent: June 11, 2013Assignee: Hitachi, Ltd.Inventors: Susumu Nakano, Tomoaki Inoue, Tadaharu Kishibe, Hiroyuki Shiraiwa
-
Patent number: 8450893Abstract: A casing of a motor with resolver includes a stator, a motor shaft rotatably supported by a bearing, a motor rotor integrally rotatable with the motor shaft, and a resolver for detecting a rotation angle of the motor rotor. The resolver includes a disc-shaped resolver stator held on the motor casing and having a surface on which a thin-film-shaped coil is formed, and a disc-shaped resolver rotor provided on an end face of the motor rotor and having a surface on which a thin-film-shaped coil is formed. Part of the motor casing holding the outer periphery of the resolver stator is formed as a shield portion cylindrically protruding along the outer periphery of the resolver rotor to the rotor. The motor casing and the shield portion are each made of a non-magnetic conductive material.Type: GrantFiled: November 4, 2009Date of Patent: May 28, 2013Assignee: Aisan Kogyo Kabushiki KaishaInventors: Hiroaki Miyazaki, Takehide Nakamura, Tomoaki Inoue, Takahiro Nakamura
-
Patent number: 8310228Abstract: A resolver includes a disc-shaped rotor provided with a detection coil pattern formed in flat shape and a stator formed in flat plate shape placed to concentrically fact the rotor in an axial direction and configured such that a planar first excitation coil pattern to which a cosine wave is supplied and a planar second excitation coil pattern to which a sine wave is supplied, the first and the second patterns being laminated. The first and second excitation coil patterns are placed to face the detection coil pattern. An insulation layer is formed with insulating coating material between the first and second excitation coil patterns.Type: GrantFiled: November 5, 2009Date of Patent: November 13, 2012Assignee: Aisan Kogyo Kabushiki KaishaInventors: Hiroaki Miyazaki, Takehide Nakamura, Tomoaki Inoue
-
Patent number: 8269487Abstract: A resolver includes an excitation coil for receiving an excitation signal and a detection coil for outputting a detection signal. The detection sine wave is changeable according to an amount of displacement of a movable element provided in the excitation coil or the detection coil. The resolver detects the amount of displacement of the movable element based on the excitation signal and the detection signal. The detection coil is one coil formed of a first detection coil pattern and a second detection coil pattern connected in series or in parallel such that the second detection coil pattern is shifted in phase by a half cycle from the first detection coil pattern.Type: GrantFiled: November 5, 2009Date of Patent: September 18, 2012Assignee: Aisan Kogyo Kabushiki KaishaInventors: Tomoaki Inoue, Takehide Nakamura
-
Patent number: 8203326Abstract: A resolver includes an excitation coil for receiving an excitation signal formed by amplitude modulation of a high-frequency signal and a detection coil for outputting a detection signal. The resolver is arranged to detect a change in position of a rotor provided with the excitation coil or the detection coil based on the detection signal varying with the change in position of the rotor. The high-frequency signal is a digitized signal generated from a reference clock.Type: GrantFiled: July 29, 2009Date of Patent: June 19, 2012Assignee: Aisan Kogyo Kabushiki KaishaInventors: Takehide Nakamura, Tomoaki Inoue
-
Patent number: 8147145Abstract: An increase in the temperature of a sliding bearing can be suppressed, and it is possible to reduce the temperature of the bearing and prevent burning and damage. The bearing is divided in two and composed of a liner and a base metal. The liner is disposed on an inner circumferential side of the bearing, and the base metal is disposed on an outer circumferential side of the bearing. A lower liner of the bearing liner, which is located on a load-receiving side, has a cooling groove formed in an outer circumferential surface thereof and extending along a circumferential direction thereof. A lubricant is cooled in the cooling groove and supplied to reduce the temperature of a shaft-sliding surface of the bearing. The lubricant is supplied to the bearing, increases in temperature due to the cooling and has low viscosity.Type: GrantFiled: February 12, 2009Date of Patent: April 3, 2012Assignee: Hitachi, Ltd.Inventors: Tomoaki Inoue, Makoto Hemmi, Kenta Suzuki, Hajime Toriya, Katsuhiro Murakami, Koji Kawai
-
Publication number: 20110109304Abstract: A rotation angle sensor comprises: a resolver stator including an excitation coil for receiving an excitation signal and a detection coil (a sine wave coil and a cosine wave coil) for outputting a detection signal; and a resolver rotor rotatably placed to face the stator. The resolver stator is formed on a stator flat plate. The resolver rotor is made of a flat-shaped rotor flat plate. The stator flat plate and the rotor flat plate are placed in parallel to face each other. The rotor flat plate is formed with a cutout.Type: ApplicationFiled: November 1, 2010Publication date: May 12, 2011Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Shinya SUZUKI, Takehide NAKAMURA, Tomoaki INOUE, Ryojiro KANEMITSU
-
Publication number: 20100244817Abstract: A resolver includes an excitation coil, an excitation signal output circuit for outputting an excitation signal to the excitation coil, a search coil for receiving a magnetic field generated in the excitation coil, and an output signal processing circuit for processing a detection signal detected by the search coil. The resolver further includes a noise cancel circuit configured to previously detect noise from an output signal of the excitation signal output circuit and to output a cancel signal having an opposite phase to that of the noise to the output signal processing circuit.Type: ApplicationFiled: March 15, 2010Publication date: September 30, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Katsuyuki Togawa, Tomoaki Inoue
-
Patent number: 7730713Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: GrantFiled: July 23, 2004Date of Patent: June 8, 2010Assignee: Hitachi, Ltd.Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi
-
Patent number: 7717090Abstract: A fuel-feeding device may preferably include a reservoir cup disposed in a fuel tank that contains liquid fuel therein, a fuel pump capable of feeding the liquid fuel contained in the reservoir cup to an engine, a pressure regulator capable of controlling a fuel pressure of the liquid fuel fed to the engine from the fuel pump, a jet pump arranged and constructed to receive a part of the pressurized liquid fuel pumped from the fuel pump via a fuel jet path, so as to introduce liquid fuel outside the reservoir cup into to the reservoir cup with the aid of flow of the pressurized liquid fuel, and a flow rate control valve disposed in the fuel jet path. The flow rate control valve is arranged and constructed to control a flow rate of the pressurized liquid fuel fed to the jet pump depending upon a pumping rate of the pressurized liquid fuel pumped from the fuel pump.Type: GrantFiled: October 7, 2008Date of Patent: May 18, 2010Assignee: Aisan Kogyo Kabushiki KaishaInventors: Yoshihiko Honda, Tomoaki Inoue, Koji Yoshida
-
Publication number: 20100117632Abstract: A resolver includes a disc-shaped rotor provided with a detection coil pattern formed in flat shape and a stator formed in flat plate shape placed to concentrically fact the rotor in an axial direction and configured such that a planar first excitation coil pattern to which a cosine wave is supplied and a planar second excitation coil pattern to which a sine wave is supplied, the first and the second patterns being laminated. The first and second excitation coil patterns are placed to face the detection coil pattern. An insulation layer is formed with insulating coating material between the first and second excitation coil patterns.Type: ApplicationFiled: November 5, 2009Publication date: May 13, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Hiroaki Miyazaki, Takehide Nakamura, Tomoaki Inoue
-
Publication number: 20100117631Abstract: A resolver comprises an excitation coil for receiving an excitation signal and a detection coil for outputting a detection signal. The detection sine wave is changeable according to an amount of displacement of a movable element provided in the excitation coil or the detection coil. The resolver detects the amount of displacement of the movable element based on the excitation signal and the detection signal. The detection coil is one coil formed of a first detection coil pattern and a second detection coil pattern connected in series or in parallel such that the second detection coil pattern is shifted in phase by a half cycle from the first detection coil pattern.Type: ApplicationFiled: November 5, 2009Publication date: May 13, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Tomoaki Inoue, Takehide Nakamura
-
Publication number: 20100111681Abstract: A bearing device of a gas turbine power generation equipment provides damping vibration of a shaft and lubricates and cools the bearing main body. The bearing devices have sleeves provided on the outer circumference sides of the bearing main bodies and bearing housings holding the respective sleeves via O-rings while each forming an annular clearance passage between each of the outer circumferences of the sleeves and a corresponding one of the bearing housings. The bearing housing has a feed-water hole communicating with the clearance passage and adapted to feed water thereto. The sleeve has a lead water hole communicating with the clearance passage and is adapted to lead water to the bearing main body, and a discharge hole which communicates with the clearance passage and is adapted to discharge water therefrom.Type: ApplicationFiled: August 18, 2006Publication date: May 6, 2010Inventors: Susumu Nakano, Tomoaki Inoue, Tadaharu Kishibe, Hiroyuki Shiraiwa
-
Publication number: 20100109491Abstract: A casing of a motor with resolver includes a stator, a motor shaft rotatably supported by a bearing, a motor rotor integrally rotatable with the motor shaft, and a resolver for detecting a rotation angle of the motor rotor. The resolver includes a disc-shaped resolver stator held on the motor casing and having a surface on which a thin-film-shaped coil is formed, and a disc-shaped resolver rotor provided on an end face of the motor rotor and having a surface on which a thin-film-shaped coil is formed. Part of the motor casing holding the outer periphery of the resolver stator is formed as a shield portion cylindrically protruding along the outer periphery of the resolver rotor to the rotor. The motor casing and the shield portion are each made of a non-magnetic conductive material.Type: ApplicationFiled: November 4, 2009Publication date: May 6, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHIInventors: Hiroaki Miyazaki, Takehide Nakamura, Tomoaki Inoue, Takahiro Nakamura
-
Publication number: 20100066347Abstract: A resolver the resolver comprising an excitation coil for receiving an excitation signal formed by amplitude modulation of a high-frequency signal and a detection coil for outputting a detection signal. The resolver is arranged to detect a change in position of a rotor provided with the excitation coil or the detection coil based on the detection signal varying with the change in position of the rotor. The high-frequency signal is a digitized signal generated from a reference clock.Type: ApplicationFiled: July 29, 2009Publication date: March 18, 2010Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Takehide Nakamura, Tomoaki Inoue
-
Publication number: 20090238506Abstract: An increase in the temperature of a sliding bearing can be suppressed, and it is possible to reduce the temperature of the bearing and prevent burning and damage. The bearing is divided into two and composed of a liner and a base metal. The liner is provided on an inner circumferential side of the bearing, and the base metal is provided on an outer circumferential side of the bearing. A lower liner of the bearing liner, which is located on a load-receiving side, has a cooling groove formed in an outer circumferential surface thereof and extending along a circumferential direction thereof. A lubricant is cooled in the cooling groove and supplied to reduce the temperature of a shaft-sliding surface of the bearing. The lubricant that increases in temperature due to the cooling and has low viscosity is supplied to the bearing.Type: ApplicationFiled: February 12, 2009Publication date: September 24, 2009Inventors: Tomoaki INOUE, Makoto Hemmi, Kenta Suzuki, Hajime Toriya, Katsuhiro Murakami, Koji Kawai
-
Publication number: 20090151699Abstract: A fuel-feeding device may preferably include a reservoir cup disposed in a fuel tank that contains liquid fuel therein, a fuel pump capable of feeding the liquid fuel contained in the reservoir cup to an engine, a pressure regulator capable of controlling a fuel pressure of the liquid fuel fed to the engine from the fuel pump, a jet pump arranged and constructed to receive a part of the pressurized liquid fuel pumped from the fuel pump via a fuel jet path, so as to introduce liquid fuel outside the reservoir cup into to the reservoir cup with the aid of flow of the pressurized liquid fuel, and a flow rate control valve disposed in the fuel jet path. The flow rate control valve is arranged and constructed to control a flow rate of the pressurized liquid fuel fed to the jet pump depending upon a pumping rate of the pressurized liquid fuel pumped from the fuel pump.Type: ApplicationFiled: October 7, 2008Publication date: June 18, 2009Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Yoshihiko HONDA, Tomoaki INOUE, Koji YOSHIDA
-
Publication number: 20090077943Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: ApplicationFiled: August 13, 2008Publication date: March 26, 2009Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi
-
Publication number: 20050039433Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: ApplicationFiled: July 23, 2004Publication date: February 24, 2005Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi