Patents by Inventor Kyoichi IKEYA

Kyoichi IKEYA 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 ring
    Patent number: 11739840
    Abstract: To provide a piston ring for an internal combustion engine, particularly a second compression ring, which has excellent wear resistance and can achieve both lower fuel consumption and efficient combustion. The above-described problem is solved by a piston ring (1) for an internal combustion engine formed so as to have a tapered shape by a peripheral surface (14) that gradually projects outward from a top to a bottom, and a radial cross-sectional shape of a Napier ring.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: August 29, 2023
    Assignee: NIPPON PISTON RING CO., LTD.
    Inventors: Kyoichi Ikeya, Ofuyu Sakai, Makoto Kajiwara
  • PISTON RING
    Publication number: 20220003316
    Abstract: To provide a piston ring for an internal combustion engine, particularly a second compression ring, which has excellent wear resistance and can achieve both lower fuel consumption and efficient combustion. The above-described problem is solved by a piston ring (1) for an internal combustion engine formed so as to have a tapered shape by a peripheral surface (14) that gradually projects outward from a top to a bottom, and a radial cross-sectional shape of a Napier ring.
    Type: Application
    Filed: October 31, 2019
    Publication date: January 6, 2022
    Applicant: NIPPON PISTON RING CO., LTD.
    Inventors: Kyoichi IKEYA, Ofuyu SAKAI, Makoto KAJIWARA