Patents by Inventor Hirosato Ishigaki

Hirosato Ishigaki 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).

  • Power unit
    Patent number: 8698347
    Abstract: In order to discharge electrical charges from a smoothing capacitor even if no discharge command is issued by a control system, making use of the displacement of a power unit in the event of a collision, a movable electrode is connected to a first contact connected to a high-potential bus, and the smoothing capacitor is connected with a converter and an inverter to be in parallel in the case where an engagement rod is positioned by a retaining ring. Further, when the engagement rod is disengaged from the retaining ring and removed from a relay, the movable electrode is held in contact with a second contact by a pressure spring, and the electrical charge remaining in the smoothing capacitor is discharged to a low-potential bus through a discharge portion.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 15, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hirosato Ishigaki
  • Vehicle warning device
    Patent number: 8169305
    Abstract: A warning device (610) includes a horn A (630) for generating a first horn sound having a volume level satisfying the legal standard and a horn B (632) for generating a second horn sound satisfying at least one of a condition that it has a volume level equal to or lower than that of the first horn sound and a condition that it is of a type different from that of the first horn sound.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: May 1, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsunari Matsumoto, Takeshi Ishida, Hirosato Ishigaki
  • POWER UNIT
    Publication number: 20110139595
    Abstract: In order to discharge electrical charges from a smoothing capacitor even if no discharge command is issued by a control system, making use of the displacement of a power unit in the event of a collision, a movable electrode is connected to a first contact connected to a high-potential bus, and the smoothing capacitor is connected with a converter and an inverter to be in parallel in the case where an engagement rod is positioned by a retaining ring. Further, when the engagement rod is disengaged from the retaining ring and removed from a relay, the movable electrode is held in contact with a second contact by a pressure spring, and the electrical charge remaining in the smoothing capacitor is discharged to a low-potential bus through a discharge portion.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 16, 2011
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hirosato Ishigaki
  • Vehicle Warning Device
    Publication number: 20070257783
    Abstract: A warning device (610) includes a horn A (630) for generating a first horn sound having a volume level satisfying the legal standard and a horn B (632) for generating a second horn sound satisfying at least one of a condition that it has a volume level equal to or lower than that of the first horn sound and a condition that it is of a type different from that of the first horn sound.
    Type: Application
    Filed: January 16, 2006
    Publication date: November 8, 2007
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsunari Matsumoto, Takeshi Ishida, Hirosato Ishigaki