Patents by Inventor Yoshihisa Isogai

Yoshihisa Isogai 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).

  • Gap self-compensating hydraulic rocker arm
    Patent number: 4104996
    Abstract: A gap self-compensating valving mechanism for an internal combustion engine, provided with a hydraulic pressure retaining mechanism arranged in place between a rocker shaft and a rocker arm. The hydraulic pressure containing mechanism includes lifters, a check valve and a return spring.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: August 8, 1978
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Akira Hosono, Yoshihisa Isogai, Hitoshi Hasegawa, Toshio Tanahashi