Patents by Inventor Tsuyoshi Higuchi
Tsuyoshi Higuchi 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: 20210404413Abstract: A sprayed coating for a sliding member of the present invention includes a ferrous alloy containing chromium (Cr). The sprayed coating for the sliding member has the content rate of the chromium of 8 mass % or more, includes a structure that comprises crystal grains contained in the sprayed coating and having an average grain size of 3 ?m or less, has a Vickers hardness of 300 Hv or more, and then is excellent at abrasion resistance.Type: ApplicationFiled: November 2, 2018Publication date: December 30, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi HIGUCHI, Akinobu ITOU, Hayato HIRAYAMA
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Publication number: 20210404044Abstract: A sprayed coating for a sliding member of the present invention includes a ferrous alloy containing iron (Fe) as a major ingredient. The sprayed coating for the sliding member containing 10 mass % or more and 20 mass % or less of chromium (Cr), and 0.1 mass % or more and 0.5 mass % or less of silicon (Si) and having the content rate of an oxide in the sprayed coating of 1 area % or less has corrosion resistance with improved seizure resistance.Type: ApplicationFiled: November 2, 2018Publication date: December 30, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi HIGUCHI, Hayato HIRAYAMA, Akinobu ITOU
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Patent number: 11193537Abstract: A bearing member (B1) having a coating layer (1) on an internal circumferential surface of a shaft hole (H) configured to mount a shaft body (P1), the coating layer (1) having a metal layer (2) whose surface is formed unevenly, and a resin layer (3) formed on the metal layer (2), the metal layer (2) having a part thereof exposed (2A) on a surface of the resin layer (3), to inhibit the increase in temperature caused by sliding contact with the shaft body (P1), and accomplishing improvement in seizure resistance.Type: GrantFiled: March 12, 2018Date of Patent: December 7, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Hayato Hirayama, Takemichi Yamashita, Tsuyoshi Higuchi, Yutaka Mabuchi
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Patent number: 11186795Abstract: A sliding mechanism excellent in seizure resistance is provided. A sliding mechanism including a lubricating oil interposed at a sliding surface between a DLC coating sliding member (A) and a sliding member (B), wherein the DLC coating sliding member (A) has a DLC film covered on a base material, and metal films in an island configuration are covered on a surface of the DLC film.Type: GrantFiled: December 28, 2017Date of Patent: November 30, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Seiichi Nakano, Yutaka Mabuchi, Tsuyoshi Higuchi, Takemichi Yamashita, Hiroshi Tosaka
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Publication number: 20210239156Abstract: A bearing member 1 is provided with a coating layer 3 on an inner circumferential surface of a shaft hole 1A into which a shaft body 2 is to be fitted. The coating layer 3 is composed of a metal base material 3A and a heat conductive material 3B that is dispersed in the base material 3A and that has a thermal conductivity relatively higher than that of the base material 3A. The heat conductive material 3B has lengths Lb and Lc in directions B and C along a surface of the coating layer 3, longer than a length La in a thickness direction A of the coating layer 3, whereby thermal conductive characteristics in the directions B and C along the inner circumferential surface of the shaft hole 1A are enhanced. Thus, heat dissipation is improved, whereby temperature rise due to sliding contact with the shaft body 2 is suppressed, and seizure resistance is improved.Type: ApplicationFiled: May 10, 2018Publication date: August 5, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Hayato HIRAYAMA, Yutaka MABUCHI, Tsuyoshi HIGUCHI, Takemichi YAMASHITA
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Publication number: 20210232686Abstract: Provided is an attack detection device including: an abnormality detection unit configured to detect, by acquiring an abnormality detection result which includes a facility ID, occurrence of an abnormality in a facility associated with the facility ID; a storage unit configured to store, as adjustment history data, data that associates the facility ID and an adjustment time; and an attack determination unit configured to determine that there is an attack on the facility associated with the facility ID, by obtaining an adjustment frequency of the facility from the adjustment history data which is stored in the storage unit, based on a result of detection by the abnormality detection unit, when the adjustment frequency exceeds an allowable number of times set in advance for the facility.Type: ApplicationFiled: April 12, 2021Publication date: July 29, 2021Applicant: Mitsubishi Electric CorporationInventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
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Publication number: 20210010537Abstract: A bearing member (B1) having a coating layer (1) on an internal circumferential surface of a shaft hole (H) configured to mount a shaft body (P1), the coating layer (1) having a metal layer (2) whose surface is formed unevenly, and a resin layer (3) formed on the metal layer (2), the metal layer (2) having a part thereof exposed (2A) on a surface of the resin layer (3), to inhibit the increase in temperature caused by sliding contact with the shaft body (P1), and accomplishing improvement in seizure resistance.Type: ApplicationFiled: March 12, 2018Publication date: January 14, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Hayato HIRAYAMA, Takemichi YAMASHITA, Tsuyoshi HIGUCHI, Yutaka MABUCHI
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Publication number: 20200401117Abstract: An apparatus for identifying a path pattern of devices that produces a defective product in a production line where a product is produced via a plurality of device is provided. The device is configured to estimate a path pattern quality indicating a quality of a group of products produced through a production path included in a path pattern, based on a production path quality and an association relationship between a path pattern and a production path indicating devices via which the product is produced and an order of passing through the devices; and to identify a path pattern suspected to be defective based on the estimated path pattern quality.Type: ApplicationFiled: September 3, 2020Publication date: December 24, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
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Publication number: 20200385645Abstract: A sliding mechanism excellent in seizure resistance is provided. A sliding mechanism including a lubricating oil interposed at a sliding surface between a DLC coating sliding member (A) and a sliding member (B), wherein the DLC coating sliding member (A) has a DLC film covered on a base material, and metal films in an island configuration are covered on a surface of the DLC film.Type: ApplicationFiled: December 28, 2017Publication date: December 10, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Seiichi NAKANO, Yutaka MABUCHI, Tsuyoshi HIGUCHI, Takemichi YAMASHITA, Hiroshi TOSAKA
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Publication number: 20200073369Abstract: An attack/abnormality detection device includes: a command extraction unit configured to extract elements having the same command destination as a command destination of an additionally received actual manufacturing command from among each of a set of normal manufacturing commands and a set of actual manufacturing commands, which contain information on a command destination and an arrival order, and are stored in a command storage region; and a detection unit configured to detect an attack or an abnormality by comparing details of the commands with each other for each arrival order of both extracted elements.Type: ApplicationFiled: January 25, 2017Publication date: March 5, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
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Patent number: 10451184Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm. A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.Type: GrantFiled: August 9, 2017Date of Patent: October 22, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi Higuchi, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
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Patent number: 10274946Abstract: When identifying a maintenance target device that is subject to maintenance in an information system realized by connecting a plurality of devices including a monitoring target device, a maintenance target device identification unit identifies the maintenance target device on the basis of contents of configuration information in the information system or contents of maintenance target device information, and a filtering target device identification unit identifies a filtering target device to be affected by the maintenance of the maintenance target device on the basis of a distance matrix calculated from an adjacency matrix obtained from the configuration information.Type: GrantFiled: October 4, 2013Date of Patent: April 30, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shuto Murai, Tsuyoshi Higuchi
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Publication number: 20170335964Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm. A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.Type: ApplicationFiled: August 9, 2017Publication date: November 23, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi HIGUCHI, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
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Patent number: 9759323Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm. A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.Type: GrantFiled: December 20, 2013Date of Patent: September 12, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi Higuchi, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
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Patent number: 9712079Abstract: An electric power converter according to an embodiment includes a switching unit, a controller, and a second bidirectional switch. The switching unit includes a plurality of first bidirectional switches disposed between a DC power source and an AC load or between a DC load and an AC power source. The controller controls the switching unit to perform power conversion between DC power and AC power. When turning off the second bidirectional switch disposed on a path between one pole of the DC power source or the DC load and the switching unit, the controller turns on the first bidirectional switch connected between the other pole of the DC power source and the AC load or between the other pole of the DC load and the AC power source.Type: GrantFiled: November 13, 2014Date of Patent: July 18, 2017Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Sadao Ishii, Katsutoshi Yamanaka, Tsuyoshi Higuchi, Takashi Kuboyama, Yutaro Ihara
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Patent number: 9695378Abstract: A sliding mechanism includes first and second members slidable relative to each other and a grease composition interposed between the first and second members and containing a thickening agent and a base oil, wherein the grease composition contains lithium 12-hydroxystearate as the thickening agent and dioctyl sebacate and/or poly-?-olefin as the base oil; and wherein at least one of the first and second member has a sliding surface coated with a hard carbon film of diamond-like carbon.Type: GrantFiled: March 29, 2013Date of Patent: July 4, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Makoto Hayama, Terasu Yoshinari, Masanori Komaba, Yutaka Mabuchi, Yoshiteru Yasuda, Saburo Abe, Katsuyuki Serizawa, Tsuyoshi Higuchi
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Patent number: 9574709Abstract: A cooled-hydrogen supply station includes: a first coolant passage through which a first coolant circulates; a water-cooled refrigerator unit disposed on a part of the first coolant passage to cool the first coolant; a second coolant passage through which a second coolant flows; a first heat exchanger for cooling the second coolant by the first coolant, between another part of the first coolant passage and a part of the second coolant passage; a hydrogen storage unit; a hydrogen passage for transporting hydrogen stored in the hydrogen storage unit; and a second heat exchanger for cooling the hydrogen by the second coolant, between another part of the second coolant passage and a part of the hydrogen passage. The hydrogen is cooled down to a temperature of ?43° C. to ?20° C. by the second heat exchanger, and a hydrogen cooling power for cooling hydrogen to ?40° C. is between 13.5 kW and 16.5 kW.Type: GrantFiled: July 10, 2014Date of Patent: February 21, 2017Assignee: Shinwa Controls Co., Ltd.Inventors: Atsushi Seki, Tsuyoshi Higuchi
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Publication number: 20150362072Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm. A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.Type: ApplicationFiled: December 20, 2013Publication date: December 17, 2015Applicant: NISSAN MOTOR CO., LTD.Inventors: Tsuyoshi HIGUCHI, Yutaka MABUCHI, Hideaki KAMIYAMA, Katsuaki OGAWA
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Publication number: 20150345705Abstract: A cooled-hydrogen supply station includes: a first coolant passage through which a first coolant circulates; a water-cooled refrigerator unit disposed on a part of the first coolant passage to cool the first coolant; a second coolant passage through which a second coolant flows; a first heat exchanger for cooling the second coolant by the first coolant, between another part of the first coolant passage and a part of the second coolant passage; a hydrogen storage unit; a hydrogen passage for transporting hydrogen stored in the hydrogen storage unit; and a second heat exchanger for cooling the hydrogen by the second coolant, between another part of the second coolant passage and a part of the hydrogen passage. The hydrogen is cooled down to a temperature of ?43° C. to ?20° C. by the second heat exchanger, and a hydrogen cooling power for cooling hydrogen to ?40° C. is between 13.5 kW and 16.5 kW.Type: ApplicationFiled: July 10, 2014Publication date: December 3, 2015Applicant: Shinwa Controls Co., LtdInventors: Atsushi SEKI, Tsuyoshi HIGUCHI
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Publication number: 20150309507Abstract: When identifying a maintenance target device that is subject to maintenance in an information system realized by connecting a plurality of devices including a monitoring target device, a maintenance target device identification unit identifies the maintenance target device on the basis of contents of configuration information in the information system or contents of maintenance target device information, and a filtering target device identification unit identifies a filtering target device to be affected by the maintenance of the maintenance target device on the basis of a distance matrix calculated from an adjacency matrix obtained from the configuration information.Type: ApplicationFiled: October 4, 2013Publication date: October 29, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shuto MURAI, Tsuyoshi HIGUCHI