Patents by Inventor Kohichi Fukunaga

Kohichi Fukunaga 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).

  • Automatic belt tensioner
    Patent number: 4743224
    Abstract: A belt tensioner has a shaft having an external thread and rotatably mounted in a body, a torsion spring provided between the body and the shaft so as to urge the shaft in a rotational direction, and a cylindrical rod having an internal thread engaged with the external thread of the shaft. An upper end of the rod being projected from the body so as to be operatively connected to a tension pulley for a belt. The torsion spring and both the threads are arranged to project rod by the rotation of the shaft urged by the torsion spring.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: May 10, 1988
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Hiroshi Yoshikawa, Naoto Muto, Kohichi Fukunaga