Patents by Inventor Shinji URAKAWA

Shinji URAKAWA 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).

  • Valve timing control device for internal combustion engine and method for assembling valve timing control device
    Patent number: 10808581
    Abstract: A valve timing control device includes: a first clearance being formed between a radial other side of the outer circumference surface of the first shaft portion, and a confronting end surface of a radial other side of the inner circumference surface of the sliding hole, a second clearance being formed between an outer circumference of the second shaft portion on a side of the first clearance, and a radial other side of the inner circumference surface of the lock recessed portion, a stepped surface being formed at a connection portion between the first shaft portion and the second shaft portion, and having a stepped width in a radial direction, and a width of the second clearance being substantially identical to the width of the stepped surface.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: October 20, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Shinji Urakawa
  • VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR ASSEMBLING VALVE TIMING CONTROL DEVICE
    Publication number: 20190284968
    Abstract: A valve timing control device includes: a first clearance being formed between a radial other side of the outer circumference surface of the first shaft portion, and a confronting end surface of a radial other side of the inner circumference surface of the sliding hole, a second clearance being formed between an outer circumference of the second shaft portion on a side of the first clearance, and a radial other side of the inner circumference surface of the lock recessed portion, a stepped surface being formed at a connection portion between the first shaft portion and the second shaft portion, and having a stepped width in a radial direction, and a width of the second clearance being substantially identical to the width of the stepped surface.
    Type: Application
    Filed: July 11, 2017
    Publication date: September 19, 2019
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Shinji URAKAWA