Patents by Inventor Yukihiro Yamamoto

Yukihiro Yamamoto 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: 11926166
    Abstract: A liquid ejecting apparatus includes a first liquid ejecting head configured to eject a liquid to an ejection direction, a sub-carriage that holds the first liquid ejecting head, and a carriage that holds the sub-carriage. The sub-carriage includes: a first member that is thermally conductive and holds the first liquid ejecting head; and a heating section provided in the first member. The first liquid ejecting head includes a first side wall facing the first member. The first member is located between the heating section and the first side wall when viewed in the ejection direction.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: March 12, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yukihiro Hanaoka, Takao Yamamoto
  • Patent number: 11264859
    Abstract: A rotary electric machine includes: a housing; a stator that is disposed in the housing; a rotating shaft that is rotatably disposed in the housing; a rotor that is disposed on the rotating shaft; and a rotational angle detecting apparatus that generates a signal that corresponds to a rotational angle of the rotating shaft. The rotational angle detecting apparatus includes: a magnetism generating body that is disposed on an axial end surface of the rotating shaft; and a magnetic sensor that faces the magnetism generating body. A recess portion is disposed on the end surface. The magnetism generating body is disposed in the recess portion.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: March 1, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yukihiro Yamamoto, Takanori Komatsu
  • Publication number: 20200169143
    Abstract: A rotary electric machine includes: a housing; a stator that is disposed in the housing; a rotating shaft that is rotatably disposed in the housing; a rotor that is disposed on the rotating shaft; and a rotational angle detecting apparatus that generates a signal that corresponds to a rotational angle of the rotating shaft. The rotational angle detecting apparatus includes: a magnetism generating body that is disposed on an axial end surface of the rotating shaft; and a magnetic sensor that faces the magnetism generating body. A recess portion is disposed on the end surface. The magnetism generating body is disposed in the recess portion.
    Type: Application
    Filed: July 14, 2017
    Publication date: May 28, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yukihiro YAMAMOTO, Takanori KOMATSU
  • Patent number: 10323688
    Abstract: A hydro dynamic bearing device comprising an upper half of a main bearing and a lower half of the main bearing, wherein the upper half of the main bearing is lined with a low-strength metal such as a Babbitt metal, wherein a circumferential groove is formed in the lower half of the main bearing, and wherein the low-strength metal of the upper half of the main bearing, which is formed at a region opposed to a downstream side of the circumferential groove formed in the lower half of the main bearing, is partially removed to cause a high-strength bearing base metal to be partially exposed.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: June 18, 2019
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Takayasu Tanaka, Kenichi Hattori, Yukihiro Yamamoto, Kenichi Tomita, Kengo Iwashige, Kenichi Tohrisawa, Yasunori Shigenaga, Tomoaki Yamashita, Makoto Hemmi, Tateki Nakamura
  • Patent number: 9391468
    Abstract: Power supply equipment (10) is provided with an AC power supply (11) and a primary-side resonance coil (13b). Movable body equipment (20) is provided with a secondary-side resonance coil (21b), which receives power from the primary-side coil, a rectifier (23), which rectifies the received power, a charger (24) to which the rectified power is supplied, and a secondary battery (25), which is connected to the charger. A primary matching unit (12) is provided between the AC power supply (11) and the primary-side resonance coil (13b). A secondary matching unit (22) is provided between the secondary-side resonance coil (21b) and the rectifier (23). A control unit is provided to either the power supply equipment (10) or the movable body equipment (20). The control unit controls a primary matching unit adjustment unit (14) and a secondary matching unit adjustment unit (26).
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: July 12, 2016
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyoshi Takada, Sadanori Suzuki, Shimpei Sakoda, Yukihiro Yamamoto, Shinji Ichikawa, Toru Nakamura
  • Publication number: 20160131185
    Abstract: A hydro dynamic bearing device comprising an upper half of a main bearing and a lower half of the main bearing, wherein the upper half of the main bearing is lined with a low-strength metal such as a Babbitt metal, wherein a circumferential groove is formed in the lower half of the main bearing, and wherein the low-strength metal of the upper half of the main bearing, which is formed at a region opposed to a downstream side of the circumferential groove formed in the lower half of the main bearing, is partially removed to cause a high-strength bearing base metal to be partially exposed.
    Type: Application
    Filed: December 29, 2015
    Publication date: May 12, 2016
    Inventors: Takayasu TANAKA, Kenichi HATTORI, Yukihiro YAMAMOTO, Kenichi TOMITA, Kengo IWASHIGE, Kenichi TOHRISAWA, Yasunori SHIGENAGA, Tomoaki YAMASHITA, Makoto HEMMI, Tateki NAKAMURA
  • Patent number: 9287719
    Abstract: Power supply side equipment comprises a high-frequency power supply, a matching box, a primary side resonance coil, an output impedance variable unit, a matching state detection unit, and a control unit. By a magnetic field resonance, the primary side resonance coil transmits power in a non-contact manner to a load through a secondary side resonance coil. At least the matching box, the primary side resonance coil, the secondary side resonance coil, and the load constitute a resonance system having a resonant frequency. The matching state detection unit detects the matching state between the input impedance of the resonance system and the output impedance of the high-frequency power supply at the resonant frequency. The control unit adjusts the output impedance variable unit and the matching box according to the detection result by the matching state detection unit so that the input impedance of the resonance system and the output impedance of the high-frequency power supply match each other.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 15, 2016
    Assignee: Kabushiki Kaisha Toyota Jidoshokki and Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Katsunaga, Yukihiro Yamamoto, Koji Nakamura, Shinji Ichikawa, Toru Nakamura
  • Patent number: 9255604
    Abstract: A hydro dynamic bearing device comprising an upper half of a main bearing and a lower half of the main bearing, wherein the upper half of the main bearing is lined with a low-strength metal such as a Babbitt metal, wherein a circumferential groove is formed in the lower half of the main bearing, and wherein the low-strength metal of the upper half of the main bearing, which is formed at a region opposed to a downstream side of the circumferential groove formed in the lower half of the main bearing, is partially removed to cause a high-strength bearing base metal to be partially exposed.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: February 9, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Takayasu Tanaka, Kenichi Hattori, Yukihiro Yamamoto, Kenichi Tomita, Kengo Iwashige, Kenichi Tohrisawa, Yasunori Shigenaga, Tomoaki Yamashita, Makoto Hemmi, Tateki Nakamura
  • Patent number: 9212957
    Abstract: In an electrical machinery and apparatus, a storage space is formed along an extension direction of a strand, and a temperature sensor is installed in the storage space of the strand, so that temperature of the strand can be immediately measured, and no pressure is applied to the temperature sensor in the process of forming a ground wall insulation thereby the temperature of the strand can be accurately measured.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: December 15, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Kazuhiko Takahashi, Kengo Iwashige, Kenichi Hattori, Yukihiro Yamamoto, Yasunori Satake, Takayasu Tanaka, Toru Muto, Seiichi Sawada, Yasuaki Kageyama
  • Patent number: 9168822
    Abstract: A charging system includes a locking device locking a connector provided at the end of a cable in the state where the connector is connected to an inlet provided in a vehicle; a release button for releasing locking by the locking device; a switch generating a signal indicating that the connector and the inlet are connected; a horn; and an ECU. In response to the operation of the release button, the switch stops generation of the signal. The ECU controls charging of a power storage device and detects whether the signal is issued or not. In the case where the ECU detects that generation of the signal is stopped during charging of the power storage device, the ECU causes the horn to issue an alarm.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: October 27, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji Ichikawa, Kenji Itagaki, Masaru Sasaki, Wanleng Ang, Kenji Murasato, Atsushi Mizutani, Yukihiro Yamamoto, Taira Kikuchi, Yoshikazu Kataoka, Shingo Ieda, Hiroki Sawada, Yoshinori Fujitake
  • Patent number: 9142972
    Abstract: Power reception equipment (20) is provided with: a secondary side resonance coil (21b) which receives power from a primary side resonance coil (13b) of power supply equipment (10); and a rectifier (23) which rectifies the received power. The power reception equipment is further provided with: a secondary matching unit (22) which is provided between the secondary side resonance coil (21b) and the rectifier (23); a charger (24) to which rectified electric power is supplied; a power storage device (25) which is connected to the charger; and a control unit (26) which adjusts the secondary matching unit when the power storage device is being charged. The control unit stores, as data on a storage device (33), the relationship between the charge power from the power supply equipment during the power ascension phase and the matching status of the secondary matching unit (22) when charging.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: September 22, 2015
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyoshi Takada, Sadanori Suzuki, Shimpei Sakoda, Yukihiro Yamamoto, Shinji Ichikawa, Toru Nakamura
  • Patent number: 9106088
    Abstract: A non-contact power transmission apparatus includes a high-frequency converting section, which converts input voltage to high-frequency voltage and outputs it, a primary coil, which receives high-frequency voltage from the high-frequency converting section, and a secondary coil, which receives electric power from the primary coil. The non-contact power transmission apparatus further includes a load to which the electric power received by the secondary coil is supplied, a rectifier located between the secondary coil and the load, and an output adjusting section, which supplies, as pulses, output voltage to the high-frequency converting section. The output adjusting section is configured to increase or reduce output to the load by adjusting a duty cycle of the pulse output.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: August 11, 2015
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tadashi Kondo, Yukihiro Yamamoto, Sadanori Suzuki, Shimpei Sakoda
  • Patent number: 8994326
    Abstract: Movable body equipment is provided with: a secondary-side resonance coil, which receives power from a primary-side resonance coil of power supply equipment; a rectifier, which rectifies the power received by the secondary-side resonance coil; and a secondary battery, to which to which the power rectified by the rectifier is supplied. A resonance-type non-contact power supply system is provided with: state of charge detection units, which detect the state of charge of the secondary battery; and an impedance estimation unit, which estimates an impedance estimation value for the secondary battery on the basis of the state of charge of the secondary battery. When the absolute value of the difference between the impedance estimation value and the current impedance value of the secondary battery exceeds a threshold, a determination unit determines that a foreign body is present between the primary-side resonance coil and the secondary-side resonance coil.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 31, 2015
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyoshi Takada, Sadanori Suzuki, Shimpei Sakoda, Yukihiro Yamamoto, Shinji Ichikawa, Toru Nakamura
  • Publication number: 20150061579
    Abstract: Power supply side equipment comprises a high-frequency power supply, a matching box, a primary side resonance coil, an output impedance variable unit, a matching state detection unit, and a control unit. By a magnetic field resonance, the primary side resonance coil transmits power in a non-contact manner to a load through a secondary side resonance coil. At least the matching box, the primary side resonance coil, the secondary side resonance coil, and the load constitute a resonance system having a resonant frequency. The matching state detection unit detects the matching state between the input impedance of the resonance system and the output impedance of the high-frequency power supply at the resonant frequency. The control unit adjusts the output impedance variable unit and the matching box according to the detection result by the matching state detection unit so that the input impedance of the resonance system and the output impedance of the high-frequency power supply match each other.
    Type: Application
    Filed: July 20, 2012
    Publication date: March 5, 2015
    Applicants: Toyota Jidosha Kabushikki Kaisha, Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroshi Katsunaga, Yukihiro Yamamoto, Koji Nakamura, Shinji Ichikawa, Toru Nakamura
  • Patent number: 8947046
    Abstract: A power feeding system is provided, in which a detected value of reflected power at a power supply device in a power feeding installation is sent from the power feeding installation to a vehicle via a first communication device, the vehicle has an impedance matching device for adjusting an impedance at a resonance system that is constituted of a power transmission resonator, including a primary self-resonant coil and a primary coil in the power feeding installation, and a power receiving resonator, including a secondary self-resonant coil and a secondary coil in the vehicle, and the impedance matching device is controlled based on the detected value of the reflected power at the power supply device, which has been received from the power feeding installation.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinji Ichikawa, Toru Nakamura, Kazuyoshi Takada, Sadanori Suzuki, Shimpei Sakoda, Yukihiro Yamamoto
  • Publication number: 20150016760
    Abstract: A hydro dynamic bearing device comprising an upper half of a main bearing and a lower half of the main bearing, wherein the upper half of the main bearing is lined with a low-strength metal such as a Babbitt metal, wherein a circumferential groove is formed in the lower half of the main bearing, and wherein the low-strength metal of the upper half of the main bearing, which is formed at a region opposed to a downstream side of the circumferential groove formed in the lower half of the main bearing, is partially removed to cause a high-strength bearing base metal to be partially exposed.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 15, 2015
    Inventors: Takayasu TANAKA, Kenichi HATTORI, Yukihiro YAMAMOTO, Kenichi TOMITA, Kengo IWASHIGE, Kenichi TOHRISAWA, Yasunori SHIGENAGA, Tomoaki YAMASHITA, Makoto HEMMI, Tateki NAKAMURA
  • Patent number: 8822953
    Abstract: An electron beam irradiation apparatus is provided that includes a vacuum room, an electron beam generator, a window frame, and an irradiation foil. The vacuum room includes a wall having an opening through which an electron beam is irradiated. An internal atmosphere of the vacuum room is evacuated. The electron beam generator is provided inside the vacuum room. The window frame is attached to and surrounds the opening in the wall of the vacuum room. The irradiation foil, through which an electron beam generated in the vacuum room is transmitted, is fixed to the window frame. The surface of the window frame, at least an area exposed to the vacuum room, is substantially covered with material including an element or elements with an atomic number less than or equal to 10.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: September 2, 2014
    Assignee: Shibuya Kogyo Co., Ltd.
    Inventors: Hirotoshi Shibuya, Toshiaki Naka, Yukinobu Nishino, Ryo Abe, Tokuo Nishi, Yukihiro Yamamoto
  • Patent number: 8774997
    Abstract: In a charging system for a vehicle for charging a power storage device, including the vehicle having the power storage device, and a charging cable for transmitting electric power supplied from an external power supply outside of the vehicle to the power storage device, charging information about charging performed by a charging device is set based on a signal generated by operation of an operation switch provided on a charging connector. This configuration can improve operability during charging.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinji Ichikawa, Kenji Itagaki, Masaru Sasaki, Wanleng Ang, Kenji Murasato, Atsushi Mizutani, Yukihiro Yamamoto, Taira Kikuchi, Yoshikazu Kataoka, Shingo Ieda, Hiroki Sawada, Yoshinori Fujitake
  • Patent number: 8766591
    Abstract: A resonance type non-contact charging apparatus is disclosed. A charger of the apparatus receives the high frequency power from a secondary side resonance coil of the apparatus. A power ratio detecting section of the apparatus detects the ratio of the reflected power from a primary side resonance coil to the high frequency power source with respect to the output power from the high frequency power source to the primary side resonance coil. A stop control section of the apparatus stops the high frequency power source when the ratio detected by the power ratio detecting section becomes greater than or equal to a predetermined threshold value.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 1, 2014
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyoshi Takada, Sadanori Suzuki, Kenichi Nakata, Shimpei Sakoda, Yukihiro Yamamoto, Shinji Ichikawa, Tetsuhiro Ishikawa
  • Publication number: 20140125144
    Abstract: In control over a contactless power supply system that includes: a power transmitting device that includes a power transmitting unit, a power supply unit supplying electric power to the power transmitting unit and a matching transformer coupled between the power supply unit and the power transmitting unit and including a variable inductor and a variable capacitor that adjust an impedance of the power transmitting device; and a power receiving device that includes a power receiving unit carrying out electromagnetic resonance with the power transmitting unit to contactlessly receive electric power from the power transmitting unit, before starting transfer of electric power from the power transmitting device to the power receiving device, the variable inductor is adjusted on the basis of an impedance of the power receiving device to thereby bring the impedance of the power transmitting device close to the impedance of the power receiving device.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 8, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toru Nakamura, Shinji Ichikawa, Kouji Nakamura, Yukihiro Yamamoto, Hiroshi Katsunaga