Patents by Inventor Kazuyoshi Hanano

Kazuyoshi Hanano 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).

  • Apex seals for rotary piston engines
    Patent number: 4125399
    Abstract: Apex seal for rotary piston engines made of an iron-based material containing in weight 2.5 to 4.0% of C, 0.5 to 2.8% of Si, less than 1.0% of Mn, 0.25 to 2.0% of Ni, 0.25 to 2.0% of Mo, 0.25 to 2.0% of Cu, 0.15 to 0.4% of B, 0.15 to 1.5% of Cr, 0.1 - 0.4% of V and the balance of substantially iron. The material is of a chilled structure which is produced when the material is casted without any specific cooling. The apex seal provides remarkably improved wear and impact resistant properties.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: November 14, 1978
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Fumio Kizu, Kazuyoshi Hanano, Kaoru Sotoyama, Masayoshi Matsuo