Patents by Inventor Sumitada Higuchi

Sumitada Higuchi 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).

  • Multi-stage cold forging machine
    Patent number: 4966028
    Abstract: A multi-stage cold forging machine including a parts forming aid unit, which has a number of aid pins corresponding to that of the forging dies, the pins being adapted to retain a forged blank against a knockout pin slidably housed in the dies, and transfer it from the respective stage to the next. The blank is progressively refined as it is transferred from stage to stage. The aid pins are operated in such a manner as to stand out of the way of the hammers moved by a ram.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: October 30, 1990
    Assignee: Kabushiki Kaisha Sakamurakikai Seisakusho
    Inventors: Yoshikazu Sakamura, Sumitada Higuchi