Patents by Inventor Michitaka Okugawa

Michitaka Okugawa 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).

  • Connecting rod breaking method
    Patent number: 8875966
    Abstract: A notch is formed in an inner circumference of a bolt hole formed on each side of a large end of the connecting rod such that the notch extends continuously along the inner circumference. By radially propagating progress of breakage from the notch as a starting point, a connecting rod is broken into a rod portion and a cap portion. In this case, since no confluence of breakage propagation exists, the connecting rod can be broken without generating any breaking surface step.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: November 4, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mami Abe, Junji Yokota, Michitaka Okugawa
  • CONNECTING ROD BREAKING METHOD
    Publication number: 20120267413
    Abstract: A notch is formed in an inner circumference of a bolt hole formed on each side of a large end of the connecting rod such that the notch extends continuously along the inner circumference. By radially propagating progress of breakage from the notch as a starting point, a connecting rod is broken into a rod portion and a cap portion. In this case, since no confluence of breakage propagation exists, the connecting rod can be broken without generating any breaking surface step.
    Type: Application
    Filed: January 24, 2011
    Publication date: October 25, 2012
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mami Abe, Junji Yokota, Michitaka Okugawa