Patents by Inventor Tetsuya Yoshikawa
Tetsuya Yoshikawa 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: 12024180Abstract: An abnormality determination device is applied to a vehicle provided with a transmission configured to transmit power by rotation of a shaft. The abnormality determination device includes a processor and a memory. The memory configured to store mapping data that is data that defines mapping learned by machine learning. The processor is configured to execute an acquisition process and a determination process. The acquisition process is a process of acquiring a variable indicating a time-series data of a rotation speed of the shaft and using the variable as a value of an input variable of the mapping. The determination process is a process of determining whether an abnormality has occurred in the transmission based on a value of the output variable acquired using the value of the input variable and the mapping.Type: GrantFiled: July 21, 2021Date of Patent: July 2, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
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Patent number: 11915536Abstract: An anomaly determination apparatus for a vehicle that includes a transmission includes an execution device and a memory device. The memory device is configured to store map data that defines pre-trained map, which has been trained through machine learning. When a variable representing time-series data of a rotation speed of a gear is fed to the map as an input variable, the map outputs a state variable representing a state of the gear as an output variable. The execution device is configured to execute: an obtaining process that obtains the variable representing the time-series data as a value of the input variable; and a determination process that determines whether there is an anomaly in the transmission based on a value of the output variable that is output by the map when the value of the input variable is fed to the map.Type: GrantFiled: July 12, 2021Date of Patent: February 27, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
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Patent number: 11796054Abstract: A storage device stores a mapping data entry that specifies a mapping and includes data learned through machine learning. A detection value of an oil temperature sensor is an oil temperature detection value. When oil temperature relation data, which is data corresponding to time series data of the oil temperature detection value, is input to the mapping as an input variable, the mapping outputs an output variable that determines whether a frictional engagement element has an anomaly. Processing circuitry executes an obtainment process that obtains the input variable and an anomaly determination process that determines whether the frictional engagement element has an anomaly based on the output variable that is output from the mapping as a result of inputting the input variable obtained in the obtainment process into the mapping.Type: GrantFiled: June 25, 2021Date of Patent: October 24, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki Bunazawa, Tetsuya Yoshikawa, Kei Yuasa, Kenichi Yamaguchi
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Publication number: 20230229156Abstract: The technology disclosed in the present specification is embodied as a support device for supporting maintenance on an apparatus including an expendable component. The support device includes at least one computer. The at least one computer executes: a process of acquiring an index indicative of a consumption level of the expendable component; a process of, at a time point when the index indicative the consumption level reaches a predetermined threshold, specifying a necessary period of time required for replacement of the expendable component at the time point; and a process of restricting an operation of the apparatus when a remaining period of time of the expendable component, the remaining period of time being associated with the threshold, is shorter than the necessary period of time required for the replacement.Type: ApplicationFiled: October 18, 2022Publication date: July 20, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masanori SHIMIZU, Hideto WATANABE, Tetsuo HORI, Hiroyuki TSUKAMOTO, Tetsuya YOSHIKAWA
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Publication number: 20220044502Abstract: An anomaly determination apparatus for a vehicle that includes a transmission includes an execution device and a memory device. The memory device is configured to store map data that defines pre-trained map, which has been trained through machine learning. When a variable representing time-series data of a rotation speed of a gear is fed to the map as an input variable, the map outputs a state variable representing a state of the gear as an output variable. The execution device is configured to execute: an obtaining process that obtains the variable representing the time-series data as a value of the input variable; and a determination process that determines whether there is an anomaly in the transmission based on a value of the output variable that is output by the map when the value of the input variable is fed to the map.Type: ApplicationFiled: July 12, 2021Publication date: February 10, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
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Publication number: 20220042596Abstract: A storage device stores a mapping data entry that specifies a mapping and includes data learned through machine learning. A detection value of an oil temperature sensor is an oil temperature detection value. When oil temperature relation data, which is data corresponding to time series data of the oil temperature detection value, is input to the mapping as an input variable, the mapping outputs an output variable that determines whether a frictional engagement element has an anomaly. Processing circuitry executes an obtainment process that obtains the input variable and an anomaly determination process that determines whether the frictional engagement element has an anomaly based on the output variable that is output from the mapping as a result of inputting the input variable obtained in the obtainment process into the mapping.Type: ApplicationFiled: June 25, 2021Publication date: February 10, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
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Publication number: 20220041174Abstract: An abnormality determination device is applied to a vehicle provided with a transmission configured to transmit power by rotation of a shaft. The abnormality determination device includes a processor and a memory. The memory configured to store mapping data that is data that defines mapping learned by machine learning. The processor is configured to execute an acquisition process and a determination process. The acquisition process is a process of acquiring a variable indicating a time-series data of a rotation speed of the shaft and using the variable as a value of an input variable of the mapping. The determination process is a process of determining whether an abnormality has occurred in the transmission based on a value of the output variable acquired using the value of the input variable and the mapping.Type: ApplicationFiled: July 21, 2021Publication date: February 10, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
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Publication number: 20220042842Abstract: A device for a vehicle including a power transfer device, the power transfer device having an input pulley, an output pulley, and an endless rotary member, the device including: a memory configured to store mapping data that include data that prescribe mapping that represents correspondence between an input variable and an output variable, the data being learned through machine learning, the input variable being at least one of input rotational speed-related data, and output rotational speed-related data, the output variable specifying whether an abnormality is caused in the endless rotary member; and a processor configured to acquire the input variable, acquire the output variable corresponding to the input variable using the mapping data, and determine, based on the output variable, whether an abnormality is caused in the endless rotary member.Type: ApplicationFiled: July 14, 2021Publication date: February 10, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideaki BUNAZAWA, Tetsuya YOSHIKAWA, Kei YUASA, Kenichi YAMAGUCHI
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Patent number: 9046444Abstract: To effectively suppress a shift of a rotating axis of an upper chuck with respect to a rotating axis of a lower chuck due to a separating force. A tire testing device (1) includes: vertical frames (30a, 30b) which are supported by a lower frame (20); a beam (40) which bridges between the vertical frames (30a, 30b) and is movable in the vertical direction; an upper chuck (45) which is attached to the center of the beam (40), the center corresponding to the center of the beam in the longitudinal direction; and a lower chuck (25) which is attached to the lower frame. When viewed from the vertical direction, a rotating axis of an upper rotating member (47) is positioned at the center of a straight line formed by connecting supporting points where each of the vertical frames (30a, 30b) support the beam (40).Type: GrantFiled: December 13, 2011Date of Patent: June 2, 2015Assignee: Kobe Steel, Ltd.Inventors: Takehiko Wakazono, Tetsuya Yoshikawa, Glen Thompson, Yasuhiko Fujieda, Shogo Sarumaru
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Publication number: 20130233066Abstract: To effectively suppress a shift of a rotating axis of an upper chuck with respect to a rotating axis of a lower chuck due to a separating force. A tire testing device (1) includes: vertical frames (30a, 30b) which are supported by a lower frame (20); a beam (40) which bridges between the vertical frames (30a, 30b) and is movable in the vertical direction; an upper chuck (45) which is attached to the center of the beam (40), the center corresponding to the center of the beam in the longitudinal direction; and a lower chuck (25) which is attached to the lower frame. When viewed from the vertical direction, a rotating axis of an upper rotating member (47) is positioned at the center of a straight line formed by connecting supporting points where each of the vertical frames (30a, 30b) support the beam (40).Type: ApplicationFiled: December 13, 2011Publication date: September 12, 2013Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Takehiko Wakazono, Tetsuya Yoshikawa, Glen Thompson, Yasuhiko Fujieda, Shogo Sarumaru
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Patent number: 8342020Abstract: A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.Type: GrantFiled: April 30, 2009Date of Patent: January 1, 2013Assignee: Kobe Steel, Ltd.Inventors: Yu Sumimoto, Koichi Honke, Masao Murakami, Tetsuya Yoshikawa, Toshikatsu Nonaka
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Patent number: 8136393Abstract: Provided is a tire testing machine capable of measuring a force generated in a tire with high precision. The tire testing machine includes a spindle shaft (20) for holding a tire (T), a housing (22) for rotatably supporting the spindle shaft (20) through a rolling bearing (25), a running device (10) having a surface rotated by rotational driving and imparting a rotational force to a tire contacting the surface, and a measurement device (4) which is provided in the housing (22) and measures a force and moment generated in the spindle shaft (20) when the tire (T) is running. Furthermore, the tire testing machine includes a torque canceller (5) for preventing the spindle shaft (20) from such an impact that rotational friction torque (My1) generated by rotational friction, which is received by the spindle shaft (20) in the housing when the spindle shaft (20) rotates, is imparted onto the shaft (20).Type: GrantFiled: February 24, 2009Date of Patent: March 20, 2012Assignee: Kobe Steel, Ltd.Inventors: Tetsuya Yoshikawa, Yasuhiko Fujieda
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Publication number: 20110000292Abstract: Provided is a tire testing machine capable of measuring a force generated in a tire with high precision. The tire testing machine includes a spindle shaft (20) for holding a tire (T), a housing (22) for rotatably supporting the spindle shaft (20) through a rolling bearing (25), a running device (10) having a surface rotated by rotational driving and imparting a rotational force to a tire contacting the surface, and a measurement device (4) which is provided in the housing (22) and measures a force and moment generated in the spindle shaft (20) when the tire (T) is running. Furthermore, the tire testing machine includes a torque canceller (5) for preventing the spindle shaft (20) from such an impact that rotational friction torque (My1) generated by rotational friction, which is received by the spindle shaft (20) in the housing when the spindle shaft (20) rotates, is imparted onto the shaft (20).Type: ApplicationFiled: February 24, 2009Publication date: January 6, 2011Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Tetsuya Yoshikawa, Yasuhiko Fujieda
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Publication number: 20090308156Abstract: A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.Type: ApplicationFiled: April 30, 2009Publication date: December 17, 2009Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Yu Sumimoto, Koichi Honke, Masao Murakami, Tetsuya Yoshikawa, Toshikatsu Nonaka
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Patent number: 7520938Abstract: An object is subjected to high-pressure processing by bringing at least a high-pressure fluid into contact with the object under pressure in a high-pressure processing chamber, and then the high-pressure processing chamber is depressurized while the temperature in the chamber is controlled to be maintained above a temperature achieved by an adiabatic expansion, the adiabatic expansion starting from the pressure and temperature at the end of the high-pressure processing step. To control in such a way, the temperature in the high-pressure processing chamber is controlled so as to suppress or recover a temperature descent caused by an adiabatic expansion during the depressurizing step. This solves a problem in which the temperature is decreased to the vapor-liquid phase coexistence region or a region in which a solid is deposited.Type: GrantFiled: August 11, 2004Date of Patent: April 21, 2009Assignee: Kobe Steel, Ltd.Inventors: Yoshihiko Sakashita, Takahiko Ishii, Masahiro Yamagata, Tetsuya Yoshikawa
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Patent number: 7513265Abstract: Disclosed is a high pressure processing method for subjecting a processing object to a high pressure processing using a high pressure fluid. In this method, the high pressure fluid is brought into collision with the surface of the processing object placed in a high pressure processing chamber, and then distributed along the surface of the processing object in an outward direction beyond the processing object.Type: GrantFiled: October 21, 2003Date of Patent: April 7, 2009Assignees: Kabushiki Kaisha Kobe Seiko Sho, Dainippon Screen Mfg. Co., Ltd.Inventors: Tetsuya Yoshikawa, Yoichi Inoue, Katsumi Watanabe, Kaoru Masuda, Katsuyuki Iijima, Tomomi Iwata, Yusuke Muraoka, Kimitsugu Saito, Ikuo Mizobata
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Patent number: 7335596Abstract: Cu-based interconnections are fabricated in a semiconductor device by depositing a thin film of Cu or Cu alloy on a dielectric film by sputtering, the dielectric film having trenches and/or via holes at least one groove and being arranged on or above a substrate, and carrying out high temperature and high pressure treatment to thereby embed the Cu or Cu alloy into the trenches and/or via holes, in which the sputtering is carried out at a substrate temperature of ?20° C. to 0° C. using, as a sputtering gas, a gaseous mixture containing hydrogen gas and an inert gas in a ratio in percentage of 5:95 to 20:80.Type: GrantFiled: June 22, 2005Date of Patent: February 26, 2008Assignee: Kobe Steel, Ltd.Inventors: Takashi Onishi, Tatsuya Yasunaga, Hideo Fujii, Tetsuya Yoshikawa, Jun Munemasa
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Patent number: 7220714Abstract: A process for removing residues from the microstructure of an object is provided, which comprises steps of preparing a remover including carbon dioxide, an additive for removing the residues and a co-solvent dissolving the additive in said carbon dioxide at a pressurized fluid condition; and bringing the object into contact with the remover so as to remove the residues from the object. A composition for removing residues from the microstructure of an object is also provided.Type: GrantFiled: April 13, 2004Date of Patent: May 22, 2007Assignee: Air Products and Chemicals, Inc.Inventors: Kaoru Masuda, Katsuyuki Iijima, Tetsuya Yoshikawa, Darry W. Peters
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Publication number: 20060019496Abstract: Cu-based interconnections are fabricated in a semiconductor device by depositing a thin film of Cu or Cu alloy on a dielectric film by sputtering, the dielectric film having trenches and/or via holes at least one groove and being arranged on or above a substrate, and carrying out high temperature and high pressure treatment to thereby embed the Cu or Cu alloy into the trenches and/or via holes, in which the sputtering is carried out at a substrate temperature of ?20° C. to 0° C. using, as a sputtering gas, a gaseous mixture containing hydrogen gas and an inert gas in a ratio in percentage of 5:95 to 20:80.Type: ApplicationFiled: June 22, 2005Publication date: January 26, 2006Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel,Ltd.)Inventors: Takashi Onishi, Tatsuya Yasunaga, Hideo Fujii, Tetsuya Yoshikawa, Jun Munemasa
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Patent number: 6916735Abstract: A temporary support layer 2 is formed on a semiconductor substrate 1, and the temporary support layer 2 is provided with a hole 4 that reaches the semiconductor substrate 1. The hole 4 is filled in with a conductor material 5, and by pressurizing the conductor material 5, the conductor material 5 and the semiconductor substrate 1 are pressure-bonded. Thereby, an aerial wiring structure whose bonding strength is improved and that has excellent self-sustainability can be obtained.Type: GrantFiled: September 30, 2002Date of Patent: July 12, 2005Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Takao Fujikawa, Tetsuya Yoshikawa