Patents by Inventor Tadamasa Osako

Tadamasa Osako 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).

  • Throttle body having interconnecting lever for converting an operational amount of accelerator to an opening of throttle valve
    Patent number: 4945874
    Abstract: A throttle body for an internal combustion engine, comprising a suction passage for supplying a suction air to the internal combustion engine; a throttle valve provided in the suction passage and fixed to a rotatable throttle valve shaft so as to adjust a quantity of the suction air; an interconnecting lever rotatably mounted to an interconnecting shaft and adapted to be rotated by pulling an accelerator cable; a throttle valve operating lever mechanically connected to the interconnecting lever and fixed to the throttle valve shaft, the throttle valve operating lever being rotated in predetermined relational association with rotation of the interconnecting lever to open and close the throtle valve; and a tension spring for normally biasing the throttle valve in a valve closing direction, the tension spring having one end or pivotal point fixed to a part fixed to the throttle body and the other end or operation point fixed to the throttle valve operating lever; wherein the pivotal point and the operation point
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: August 7, 1990
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventors: Tutomu Nishitani, Takio Suzuki, Yasuaki Kono, Tadamasa Osako, Sunao Kitamura, Youzou Sakakibara, Naruto Ito