Patents by Inventor Yoshihito Ooya

Yoshihito Ooya 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).

  • Combined oil control ring
    Patent number: 9657838
    Abstract: A combined oil control ring for automobile engines capable of keeping an excellent oil-controlling function without suffering sticking between a spacer expander and side rails for a long period of operation comprises upper and lower two side rails, and an axially corrugated spacer expander having upper and lower portions; a leg portion connecting each upper portion and each lower portion of the spacer expander having a portion having an inclination angle ? of 15° or more from the axial direction.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: May 23, 2017
    Assignee: KABUSHIKI KAISHA RIKEN
    Inventor: Yoshihito Ooya
  • COMBINED OIL CONTROL RING
    Publication number: 20150145218
    Abstract: A combined oil control ring for automobile engines capable of keeping an excellent oil-controlling function without suffering sticking between a spacer expander and side rails for a long period of operation comprises upper and lower two side rails, and an axially corrugated spacer expander having upper and lower portions; a leg portion connecting each upper portion and each lower portion of the spacer expander having a portion having an inclination angle ? of 15° or more from the axial direction.
    Type: Application
    Filed: May 27, 2013
    Publication date: May 28, 2015
    Applicant: KABUSHIKI KAISHA RIKEN
    Inventor: Yoshihito Ooya