Patents by Inventor Takafumi Kakiuchi

Takafumi Kakiuchi 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).

  • Winding apparatus and method
    Patent number: 5806781
    Abstract: A winding apparatus for positioning a leading end of a film layer with high precision. The film is loaded at a position away from a winding position for winding the film around a bobbin and the leading end of the film is brought into contact with the bobbin by using a retainer. At the same time, to control the length of the film to be wound to improve reproducibility of the shape of a transformer, a drag chuck is provided, and the drag chuck is controlled through a servo control.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: September 15, 1998
    Assignee: Sony Corporation
    Inventors: Minoru Ujita, Takafumi Kakiuchi, Masahiro Otsuka, Takayuki Nakamura
  • Winding apparatus for coils formed of wire and film in which strips of films are held at each end by respective chucks
    Patent number: 5662289
    Abstract: A winding apparatus and a winding method for positioning a leading end of a film layer with high precision. The film is loaded at a position away from a winding position for winding the film around a bobbin and the leading end of the film is brought into contact with the bobbin by using a retainer. At the same time, to control the length of the film to be wound to improve reproducibility of the shape of a transformer a drag chuck is provided, and the drag chuck is controlled through a servo control.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: September 2, 1997
    Assignee: Sony Corporation
    Inventors: Minoru Ujita, Takafumi Kakiuchi, Masahiro Otsuka, Takayuki Nakamura