Patents by Inventor Takayuki Koyasu

Takayuki Koyasu 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).

  • Patent number: 6090025
    Abstract: A machine tool includes a tool magazine for accommodating a plurality of tools, the tool magazine including a tool ejecting section, feeding means for selectively feeding one of the tools accommodated in the tool magazine to the tool ejecting section of the tool magazine, and feed control means for controlling the feeding means so that a feeding speed of the feeding means is set on the basis of a type of a machining operation executed during feed of the tool.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: July 18, 2000
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Matsuoka, Takayuki Koyasu
  • Patent number: 5563797
    Abstract: In a wire-cut discharge machine, a workpiece fixedly mounted on a movable table is returned from the present position to a machining start position so that auxiliary objects, such as clasps for holding the workpiece, and structural objects, such as the nozzle of the wire-cut discharge device, do not interfere with each other. Relative coordinate values between the machining start position and the present position are calculated and the calculated results are displayed on a display device. The workpiece is moved in an X-direction and is then moved in a Y-direction toward the machining start position based on moving data corresponding to the calculated results.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: October 8, 1996
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Takayuki Koyasu