Patents by Inventor Ryozoo Tomozaki

Ryozoo Tomozaki 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).

  • Fuel injection pump having sintered cam ring secured to body by bolt
    Patent number: 4687425
    Abstract: A sintered cam ring is secured to the inner surface of a cylindrical body by means of a bolt. A fuel injection pump has a rotor which supports a roller rotating along the inner surface of the sintered cam ring and is driven by an engine. The sintered cam ring is provided in the outer surface thereof with a groove extending along the central axis thereof. A positioning member for fixing the position of the groove and that of a pin hole formed in the body for receiving a bolt is inserted such as to stretch between the groove and the pin hole. Further, a bolt is employed to secure and tighten the positioning member fitted in both the pin hole and the groove from the outside of the body.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: August 18, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Yoshiya Takano, Yoshikazu Hoshi, Takao Abe, Ryozoo Tomozaki