Patents by Inventor Minoru Hisakawa

Minoru Hisakawa 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).

  • Endless ribbon cassette
    Patent number: 4286887
    Abstract: A ribbon cassette for a looped ink ribbon in a stuffed state is provided with a depending plate on a lower surface of a cover member, for covering a ribbon chamber, near an outlet opening in order to reduce a ribbon drawing-out force by taking advantage of a slight and not-excessive frictional resistance taking place there. The depending plate is in the form of an inverted isosceles triangle and the distance between the tip end of the triangle and a floor of the ribbon chamber is smaller than the width of the ribbon.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: September 1, 1981
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Minoru Hisakawa, Tsugio Okamoto