Patents by Inventor Tokimasa Okumura

Tokimasa Okumura 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).

  • Numerically controlled machine tool and machining method thereof
    Patent number: 5401230
    Abstract: On a frame, a headstock and a tool rest are provided being free to relatively move so as to perform machining operations. The headstock is rotatably provided with spindle. The spindle is provided with a workpiece gripping means. One or more than one bar supporting means for movably supporting a bar stock in a predetermined feeding direction are provided at a predetermined position with respect to the spindle. A cutting means, for cutting the bar stock supported by the bar stock supporting means at a cutting position on the feeding direction side to the bar supporting means, is provided. A workpiece carrying means is provided being free to move relative to the headstock so as to deliver the workpiece produced by cutting of the bar stock with the cutting means to the workpiece gripping means of the spindle from the workpiece gripping means side to the spindle.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: March 28, 1995
    Assignee: Kiwa Giken Kabushiki Kaisha
    Inventors: Shoji Momoi, Masaki Asai, Tokimasa Okumura, Junji Miwa