Patents by Inventor Masahiro Kohda

Masahiro Kohda 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).

  • Plasma arc cutting device having metal deposition removal function and method for removing deposition from nozzle of the plasma arc cutting device
    Patent number: 5091625
    Abstract: A plasma arc workpiece cutting device having means for removing a deposited material deposited onto a nozzle of a plasma torch. During plasma arc cutting operation, molten spatters may be directed toward the plasma torch and may be adhered onto the nozzle. The deposited material is removed by way for removing the deposited material. At every proper intervals, the plasma torch is moved toward the removing structure, and the deposited material is brought into sliding contact therewith in order to frictionally remove the deposited material from the nozzle. A control system is provided for moving the plasma torch at every proper timings so as to perform the deposited material removing operation.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: February 25, 1992
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Masahiro Kohda, Osamu Yamada, Hisaaki Yamane