Patents by Inventor Kazuyuki FUSHIMI

Kazuyuki FUSHIMI 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).

  • Piston and piston ring for internal combustion engine
    Patent number: 10914380
    Abstract: A piston includes a piston body and a piston ring fitted into a ring groove. The piston ring has a top surface that includes: a convex portion formed between an inner edge position and a central position at which a radial direction thickness is ½, with the piston ring in a free state, and a planar portion or an inclined peripheral portion continuous with the convex portion on a radially outer side of the convex portion. In a predetermined status of the piston body and the piston ring, an angle between the top surface of the ring groove and the planar portion or the inclined peripheral portion is at least 18 arcminutes in a cross-section that is parallel to a central axis of the piston body and includes the central axis.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 9, 2021
    Assignees: KABUSHIKI KAISHA RIKEN, HONDA FOUNDRY CO., LTD.
    Inventors: Kazuyuki Fushimi, Yoshitaka Watanabe, Kazuki Sato
  • PISTON AND PISTON RING FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20200040995
    Abstract: A piston includes a piston body and a piston ring fitted into a ring groove. The piston ring has a top surface that includes: a convex portion formed between an inner edge position and a central position at which a radial direction thickness is ½, with the piston ring in a free state, and a planar portion or an inclined peripheral portion continuous with the convex portion on a radially outer side of the convex portion. In a predetermined status of the piston body and the piston ring, an angle between the top surface of the ring groove and the planar portion or the inclined peripheral portion is at least 18 arcminutes in a cross-section that is parallel to a central axis of the piston body and includes the central axis.
    Type: Application
    Filed: March 27, 2018
    Publication date: February 6, 2020
    Applicants: KABUSHIKI KAISHA RIKEN, HONDA FOUNDRY CO., LTD.
    Inventors: Kazuyuki FUSHIMI, Yoshitaka WATANABE, Kazuki SATO