Patents by Inventor Hirofumi KAWARAZAKI

Hirofumi KAWARAZAKI 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).

  • Driving force transmission device of vehicle
    Patent number: 10309523
    Abstract: A driving force transmission device of a vehicle includes: a main body; a carrying up gear; a drive shaft; and a blocking member. A gear that transmits a driving force to the vehicle is housed in the main body. The carrying up gear carries up a lubricating oil stored in the main body. The drive shaft has, in the shaft, a lubricating oil storage space into which the carried up lubricating oil is introduced and a lubricating oil discharge hole through which the lubricating oil in the lubricating oil storage space is supplied to a bearing unit. The blocking member blocks the lubricating oil discharge hole in accordance with a rotational speed of the drive shaft.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: June 4, 2019
    Assignee: SUBARU CORPORATION
    Inventors: Hirofumi Kawarazaki, Satoshi Akimoto
  • DRIVING FORCE TRANSMISSION DEVICE OF VEHICLE
    Publication number: 20170343100
    Abstract: A driving force transmission device of a vehicle includes: a main body; a carrying up gear; a drive shaft; and a blocking member. A gear that transmits a driving force to the vehicle is housed in the main body. The carrying up gear carries up a lubricating oil stored in the main body. The drive shaft has, in the shaft, a lubricating oil storage space into which the carried up lubricating oil is introduced and a lubricating oil discharge hole through which the lubricating oil in the lubricating oil storage space is supplied to a bearing unit. The blocking member blocks the lubricating oil discharge hole in accordance with a rotational speed of the drive shaft.
    Type: Application
    Filed: April 13, 2017
    Publication date: November 30, 2017
    Inventors: Hirofumi KAWARAZAKI, Satoshi AKIMOTO