Patents by Inventor Tadanori Dobashi

Tadanori Dobashi 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).

  • Device and method of exchanging tools
    Patent number: 5111573
    Abstract: A device for exchanging tools for use with a spindle has a tool holding device having a plurality of tool holding members disposed at predetermined intervals. Each tool holding member is supported for movement in its axial direction and is axially driven by a drive device so that a tool is transferred between the tool holding member and the spindle. The invention is also concerned with a tool exchanging method.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: May 12, 1992
    Assignee: Hitachi Seiko Ltd.
    Inventors: Yasushi Ito, Tamio Otani, Tadanori Dobashi, Akira Irie, Akihiro Matsuya