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).

  • Publication number: 20210404413
    Abstract: 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: Application
    Filed: November 2, 2018
    Publication date: December 30, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi HIGUCHI, Akinobu ITOU, Hayato HIRAYAMA
  • Publication number: 20210404044
    Abstract: 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: Application
    Filed: November 2, 2018
    Publication date: December 30, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi HIGUCHI, Hayato HIRAYAMA, Akinobu ITOU
  • Patent number: 11193537
    Abstract: 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: Grant
    Filed: March 12, 2018
    Date of Patent: December 7, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hayato Hirayama, Takemichi Yamashita, Tsuyoshi Higuchi, Yutaka Mabuchi
  • Patent number: 11186795
    Abstract: 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: Grant
    Filed: December 28, 2017
    Date of Patent: November 30, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Seiichi Nakano, Yutaka Mabuchi, Tsuyoshi Higuchi, Takemichi Yamashita, Hiroshi Tosaka
  • Publication number: 20210239156
    Abstract: 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: Application
    Filed: May 10, 2018
    Publication date: August 5, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hayato HIRAYAMA, Yutaka MABUCHI, Tsuyoshi HIGUCHI, Takemichi YAMASHITA
  • Publication number: 20210232686
    Abstract: 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: Application
    Filed: April 12, 2021
    Publication date: July 29, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
  • Publication number: 20210010537
    Abstract: 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: Application
    Filed: March 12, 2018
    Publication date: January 14, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hayato HIRAYAMA, Takemichi YAMASHITA, Tsuyoshi HIGUCHI, Yutaka MABUCHI
  • Publication number: 20200401117
    Abstract: 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: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
  • Publication number: 20200385645
    Abstract: 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: Application
    Filed: December 28, 2017
    Publication date: December 10, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Seiichi NAKANO, Yutaka MABUCHI, Tsuyoshi HIGUCHI, Takemichi YAMASHITA, Hiroshi TOSAKA
  • Publication number: 20200073369
    Abstract: 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: Application
    Filed: January 25, 2017
    Publication date: March 5, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi TATEDOKO, Tsuyoshi HIGUCHI, Kiyoto KAWAUCHI, Takeshi YONEDA
  • Patent number: 10451184
    Abstract: 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: Grant
    Filed: August 9, 2017
    Date of Patent: October 22, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi Higuchi, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
  • Patent number: 10274946
    Abstract: 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: Grant
    Filed: October 4, 2013
    Date of Patent: April 30, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuto Murai, Tsuyoshi Higuchi
  • Publication number: 20170335964
    Abstract: 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: Application
    Filed: August 9, 2017
    Publication date: November 23, 2017
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi HIGUCHI, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
  • Patent number: 9759323
    Abstract: 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: Grant
    Filed: December 20, 2013
    Date of Patent: September 12, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi Higuchi, Yutaka Mabuchi, Hideaki Kamiyama, Katsuaki Ogawa
  • Patent number: 9712079
    Abstract: 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: Grant
    Filed: November 13, 2014
    Date of Patent: July 18, 2017
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Sadao Ishii, Katsutoshi Yamanaka, Tsuyoshi Higuchi, Takashi Kuboyama, Yutaro Ihara
  • Patent number: 9695378
    Abstract: 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: Grant
    Filed: March 29, 2013
    Date of Patent: July 4, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Makoto Hayama, Terasu Yoshinari, Masanori Komaba, Yutaka Mabuchi, Yoshiteru Yasuda, Saburo Abe, Katsuyuki Serizawa, Tsuyoshi Higuchi
  • Patent number: 9574709
    Abstract: 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: Grant
    Filed: July 10, 2014
    Date of Patent: February 21, 2017
    Assignee: Shinwa Controls Co., Ltd.
    Inventors: Atsushi Seki, Tsuyoshi Higuchi
  • Publication number: 20150362072
    Abstract: 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: Application
    Filed: December 20, 2013
    Publication date: December 17, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tsuyoshi HIGUCHI, Yutaka MABUCHI, Hideaki KAMIYAMA, Katsuaki OGAWA
  • Publication number: 20150345705
    Abstract: 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: Application
    Filed: July 10, 2014
    Publication date: December 3, 2015
    Applicant: Shinwa Controls Co., Ltd
    Inventors: Atsushi SEKI, Tsuyoshi HIGUCHI
  • Publication number: 20150309507
    Abstract: 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: Application
    Filed: October 4, 2013
    Publication date: October 29, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuto MURAI, Tsuyoshi HIGUCHI