Patents by Inventor Hirofumi Tano

Hirofumi Tano 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).

  • Apparatus for preventing drying-up of drawing needle pens
    Patent number: 4628326
    Abstract: A plotter for causing a pen carriage to pick up a drawing needle pen from a pen socket so as to perform drawing, comprises: a support plate located immediately under the pen socket and biased toward a pen tip; and an anti-dry pad formed on an upper surface of the support plate, having elastic and hermetic sealing properties, the pen tip being inserted into the pad.
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: December 9, 1986
    Assignees: Iwatsu Electric Co., Ltd., Dainippon Screen Mfg. Co., Ltd.
    Inventors: Sadaaki Fukumura, Takeji Hashimoto, Hirofumi Tano
  • Pen tip cleaning assembly of plotter
    Patent number: 4621428
    Abstract: A pen tip cleaning assembly of a plotter for performing drawing with a drawing needle pen held by a pen carriage, is provided wherein a two-dimensional pad of an elastic material is disposed in a drawing surface so as to allow insertion of a pen tip of the drawing needle pen, and the pen tip is moved relative to the two-dimensional pad, whereby the pen tip is cleaned every time the pen tip is inserted in a clean portion of the two-dimensional pad.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: November 11, 1986
    Assignees: Iwatsu Electric Co., Ltd., Dainippon Screen Mfg. Co., Ltd.
    Inventors: Sadaaki Fukumura, Etsuji Tagami, Takeji Hashimoto, Hirofumi Tano