Patents by Inventor Tomoyuki Nakagawa

Tomoyuki Nakagawa 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: 20240135962
    Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, a conductive part, an element part, and first to fourth terminals. The conductive part is electrically insulated from the first and second magnetic poles. The first and second terminals are electrically connected to the conductive part. The element part is provided between the first and second magnetic poles and electrically connected to the first and second magnetic poles. The element part is conductive. The third terminal is electrically connected to the first magnetic pole. The fourth terminal is electrically connected to the second magnetic pole. A first magnetic pole temperature in a first state is higher than a second magnetic pole temperature of the second magnetic pole in the first state. A first current is supplied between the first and second terminals in the first state.
    Type: Application
    Filed: July 24, 2023
    Publication date: April 25, 2024
    Inventors: Yuji NAKAGAWA, Naoyuki NARITA, Tomoyuki MAEDA, Masayuki TAKAGISHI, Tazumi NAGASAWA, Ryo OSAMURA, Kosuke KURIHARA
  • Patent number: 11935568
    Abstract: According to one embodiment, a magnetic recording device includes a magnetic head and a controller. The magnetic head includes first and second magnetic poles, a magnetic element provided between the first magnetic pole and the second magnetic pole, first and second terminals electrically connected to one end and another end of the magnetic element, respectively, and a coil. The controller is electrically connected to the magnetic element and the coil, and performs a recording operation. In the recording operation, the controller supplies a recording current to the coil while applying an element voltage between the first and second terminals. When the applied voltage is changed while the recording current is supplied, a differential resistance of the magnetic element becomes a first differential resistance peak when the applied voltage is a first voltage, and becomes a second differential resistance peak when the applied voltage is a second voltage.
    Type: Grant
    Filed: February 3, 2023
    Date of Patent: March 19, 2024
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Yuji Nakagawa, Naoyuki Narita, Masayuki Takagishi, Tomoyuki Maeda
  • Publication number: 20240019102
    Abstract: A socket housing having an engaging portion that is engaged with a predetermined member; a substrate having a base plate formed by a resin material and a wiring pattern formed in at least a surface on one side, in a thickness direction, of the base plate; a light-emitting element that is connected to the wiring pattern; an annular frame that is formed on the substrate and covers the light-emitting element; a sealing resin that is packed inside the frame and seals the light-emitting element; and an electronic component joined to a land that is formed on an outer circumferential side of the frame. The frame is formed as a resin material having fluidity applied to the substrate is hardened. A clearance between the frame and the land or a clearance between the frame and the electronic component, whichever is smaller, is set to be 0.1 mm or larger.
    Type: Application
    Filed: November 26, 2021
    Publication date: January 18, 2024
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Atsushi OZAWA, Tomoyuki NAKAGAWA, Toru ITO, Tetsuya SUZUKI
  • Patent number: 11644031
    Abstract: A vane pump includes: a rotor; vanes freely slidably received in the rotor; a cam ring having a cam face with which the vanes come into sliding contact; a side member having a sliding contact surface with which side surfaces of the rotor and the vanes come into sliding contact; pump chambers; and a discharge port configured to guide working fluid discharged from the pump chambers. The side member has a guide surface that is provided on an end portion side of the opening portion, the guide surface being configured to push the end portions of the vanes upward and guide them toward the sliding contact surface of the side member as the rotor is rotated in the reverse rotation direction.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: May 9, 2023
    Assignee: KYB CORPORATION
    Inventors: Yusuke Ohmori, Tomoyuki Nakagawa, Masamichi Sugihara, Atsumi Takahashi, Satoshi Watanabe
  • Publication number: 20220010795
    Abstract: A vane pump includes: a rotor; vanes freely slidably received in the rotor; a cam ring having a cam face with which the vanes come into sliding contact; a side member having a sliding contact surface with which side surfaces of the rotor and the vanes come into sliding contact; pump chambers; and a discharge port configured to guide working fluid discharged from the pump chambers. The side member has a guide surface that is provided on an end portion side of the opening portion, the guide surface being configured to push the end portions of the vanes upward and guide them toward the sliding contact surface of the side member as the rotor is rotated in the reverse rotation direction.
    Type: Application
    Filed: October 29, 2019
    Publication date: January 13, 2022
    Applicant: KYB Corporation
    Inventors: Yusuke OHMORI, Tomoyuki NAKAGAWA, Masamichi SUGIHARA, Atsumi TAKAHASHI, Satoshi WATANABE
  • Patent number: 10636604
    Abstract: An electromagnetic relay includes a base, an electromagnet block fixed to the base, an armature which reciprocates when the electromagnet block is switched between an excitation state and a non-excitation state, and a card which slides in association with the movement of the armature. The base includes a rail portion which guides the card upon sliding, and the card includes a slide portion which slides along the rail portion. The rail portion includes a stopper portion which prevents disengagement of the slide portion from the rail portion.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 28, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Toshinori Fujimura, Takeshi Nagata, Tomoyuki Nakagawa, Takahiro Ota, Yosuke Sakai
  • Patent number: 10354522
    Abstract: An optical detection device includes: an optical sensor configured to detect light from a light source of an indication lamp; an optical-detection-side communication unit configured to wirelessly transmit at least an optical detection signal of the optical sensor; and a photoelectric conversion unit configured to convert light from the light source into power and to store the power. The optical sensor and the optical-detection-side communication unit operate using the power stored in the photoelectric conversion unit.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 16, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Tomoyuki Nakagawa, Sakon Murayama
  • Patent number: 10317064
    Abstract: A light source unit includes a light emitting element which functions as a light source, a wiring pattern on which the light emitting element is mounted, an electrode pad connected to the wiring pattern, a substrate on which the wiring pattern is formed and the electrode pad is mounted, a power supply body which supplies external power to the electrode pad, and a socket housing which has an engaging portion engaged with a predetermined member and holds the substrate, the light emitting element and the power supply body. The power supply body has a terminal holding portion formed of an insulating resin material and a connection terminal supported by the terminal holding portion and connected to an external power supply. The connection terminal and the electrode pad are connected to each other by a conduction connecting part.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: June 11, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Atsushi Ozawa, Tomoyuki Nakagawa, Tsutomu Machida
  • Patent number: 10289099
    Abstract: An operation order system includes a management apparatus that manages processing executed by a plurality of processing machines and operations performed on the processing machines by operators and that determines a next operation for each operator based on an operation state of the operator, and portable terminal that can be carried by the operator and via which the operator can input the operation state of the operator so that the portable terminal transmits the input operation state to the management apparatus through wireless communication, the portable terminal receives the next operation from the management apparatus through wireless communication and displays the received next operation. The portable terminal receives, as the operation state, operation start information or operation completion information input from the operator indicating that the operator has started or completed the operation at a home position in a facility.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: May 14, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Yuji Yamaguchi, Kazuki Yoshikawa, Tomoyuki Nakagawa, Toshio Aono
  • Publication number: 20190072091
    Abstract: A vane pump includes a rotor that is rotationally driven; vanes inserted into the rotor in a freely slidable manner; pump chambers that are defined between the vanes at adjacent positions; suction ports that guide working oil to the pump chambers; suction pressure chamber that is communicated with the suction ports and that stores the working oil; and a suction passage that is connected to the suction pressure chamber and that has an suction opening end that opens at an outer surface of a pump body. In a state in which the vane pump is mounted, the suction pressure chamber is mounted below the suction opening end of the suction passage.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 7, 2019
    Applicant: KYB Corporation
    Inventors: Yoshiyuki MAKI, Tomoyuki NAKAGAWA, Masamichi SUGIHARA
  • Publication number: 20190055403
    Abstract: Provided is a polyamide resin having excellent heat shrinkability. A polyamide resin which contains three or more types of units, wherein the polyamide resin comprises (A) units derived from a lactam and/or an aminocarboxylic acid, and (B) units derived from an equimolar salt of a diamine and a dicarboxylic acid, wherein (B) the units derived from an equimolar salt of a diamine and a dicarboxylic acid comprise (B-1) units having no alicyclic structure and (B-2) units having an alicyclic structure.
    Type: Application
    Filed: February 27, 2017
    Publication date: February 21, 2019
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Shuichi MAEDA, Tomoyuki NAKAGAWA, Shusaku WADA, Yasunari HANAOKA
  • Publication number: 20180306182
    Abstract: A vane pump includes a rotor; a plurality of slits that are formed in the rotor, the plurality of vanes being respectively inserted into the plurality of slits in a slidable manner; a cam ring that has a cam face on which tip-ends of the vanes slide by the rotation of the rotor; and pump chambers that are defined by the rotor, the cam ring, and an adjacent pair of the vanes. The plurality of vanes have a plurality of first vanes that are formed by applying a DLC coating on a base material and second vanes that are formed such that the base material is exposed, the first vanes being respectively inserted into at least two adjacent slits of the plurality of slits.
    Type: Application
    Filed: September 2, 2016
    Publication date: October 25, 2018
    Applicant: KYB Corporation
    Inventors: Yoshiyuki MAKI, Tomoyuki FUJITA, Tomoyuki NAKAGAWA, Masamichi SUGIHARA
  • Publication number: 20180283373
    Abstract: The cartridge vane pump includes a first connection channel that connects a first discharge port and a first discharge channel and a second connection channel that connects a second discharge port and a second discharge channel. An O-ring is provided on an outer circumference of a circular tube portion, the O-ring blocks communication between the first connection channel and the second connection channel.
    Type: Application
    Filed: September 8, 2016
    Publication date: October 4, 2018
    Applicant: KYB Corporation
    Inventors: Masamichi SUGIHARA, Tomoyuki NAKAGAWA, Yoshiyuki MAKI
  • Publication number: 20180258928
    Abstract: A cartridge vane pump includes a head pin that penetrates through a cover, a cover-side side plate and a cam ring that are fixed to an adapter. The head pin has a shaft portion that is fixed to the adapter at a tip end thereof, and a restricting portion that has a diameter larger than that of the shaft portion and being formed on a base end of the shaft portion. The cam ring, the cover, the cover-side side plate and a body-side side plate are held between the restricting portion and the adapter.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 13, 2018
    Applicant: KYB Corporation
    Inventors: Tomoyuki NAKAGAWA, Masamichi SUGIHARA, Yoshiyuki MAKI
  • Publication number: 20180261414
    Abstract: An electromagnetic relay includes a base, an electromagnet block fixed to the base, an armature which reciprocates when the electromagnet block is switched between an excitation state and a non-excitation state, and a card which slides in association with the movement of the armature. The base includes a rail portion which guides the card upon sliding, and the card includes a slide portion which slides along the rail portion. The rail portion includes a stopper portion which prevents disengagement of the slide portion from the rail portion.
    Type: Application
    Filed: September 1, 2016
    Publication date: September 13, 2018
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO. LTD.
    Inventors: Toshinori FUJIMURA, Takeshi NAGATA, Tomoyuki NAKAGAWA, Takahiro OTA, Yosuke SAKAI
  • Publication number: 20180252215
    Abstract: A vane pump includes a high-pressure chamber formed as a groove in a bottom portion of a pump-accommodating concave portion. The working fluid is discharged from a plurality of discharge ports leading to the high-pressure chamber. A high-pressure passage has an opening portion opening to the high-pressure chamber and guides the working fluid to the outside of the high-pressure chamber. In the vane pump, one of the plurality of discharge ports is arranged so as to face the opening portion of the high-pressure passage, and the flow-passage cross-sectional area of the high-pressure chamber is smaller than the total flow-passage cross-sectional area of the plurality of the discharge ports.
    Type: Application
    Filed: August 31, 2016
    Publication date: September 6, 2018
    Applicant: KYB Corporation
    Inventors: Hiromi SHIMONO, Tomoyuki FUJITA, Tomoyuki NAKAGAWA, Hirotoshi KONDOU
  • Publication number: 20180252212
    Abstract: A cartridge vane pump includes: a body-side side plate that is brought into contact with end surfaces of a rotor and a cam ring; first and second discharge ports that are formed in the body-side side plate; and an adapter that is formed with first and second connection channels for connecting the first and second discharge ports formed in the body-side side plate and first and second discharge channels formed in a body.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 6, 2018
    Applicant: KYB Corporation
    Inventors: Yoshiyuki MAKI, Masamichi SUGIHARA, Tomoyuki NAKAGAWA, Koji YOSHIMURA
  • Patent number: 10032968
    Abstract: Provided is a light emitting module in which an LED device is mounted and power is supplied to the LED device by a gold wire. The light emitting module includes a first resin (sealing material) that seals the gold wire and a second resin (dam wall) that surrounds at least a portion of the outer peripheral of the first resin. The first resin has a lower viscosity and a lower elastic modulus compared to the second resin, and protects the gold wire mechanically and chemically. The second resin suppresses the first resin from being flowed out toward the peripherals, and, as a result, the sealing state of the gold wire by the first resin may be maintained.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: July 24, 2018
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Tetsuya Suzuki, Akihiro Matsumoto, Tomoyuki Nakagawa, Naoki Sone
  • Patent number: 10018324
    Abstract: A light source unit of one embodiment includes a socket housing, a light emitting module, a substrate, a sealing part, and a lens part. The sealing part seals the light emitting element and the conductive part to the substrate. A lens part is formed on the sealing part. Alastic modulus of the lens part is higher than that of the sealing part.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: July 10, 2018
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki Nakagawa, Atsushi Ozawa, Ryota Naito
  • Publication number: 20180165955
    Abstract: An optical detection device includes: an optical sensor configured to detect light from a light source of an indication lamp; an optical-detection-side communication unit configured to wirelessly transmit at least an optical detection signal of the optical sensor; and a photoelectric conversion unit configured to convert light from the light source into power and to store the power. The optical sensor and the optical-detection-side communication unit operate using the power stored in the photoelectric conversion unit.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 14, 2018
    Applicant: JTEKT CORPORATION
    Inventors: Tomoyuki NAKAGAWA, Sakon MURAYAMA