Patents by Inventor Kouji Ohkawa

Kouji Ohkawa 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 tool change machine tool
    Patent number: 4521950
    Abstract: An automatic tool change machine tool having a vertical column on which a tool stock receiving therein a vertically movable tool bar is mounted. The tool bar is provided with a toolholder receiving means at the lowermost end for the attachment of a toolholder having a cutting tool. The machine tool further has a toolholder magazine storing a plurality of toolholders. The magazine is turned around the vertical column so that one of the toolholders is indexed to a predetermined position where toolholders are attached to and detached from the tool bar in one reciprocal vertical movement of the tool bar.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: June 11, 1985
    Assignee: O-M Limited
    Inventors: Hiroshi Kase, Yoshiaki Matsumoto, Kouji Ohkawa