Patents by Inventor Hans P. U. Verswijver

Hans P. U. Verswijver 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).

  • Pencil sharpener and method
    Patent number: 6574875
    Abstract: The present invention is for an improved pencil sharpener that is slidingly disposed about a pencil. The pencil sharpener comprises a cutting surface, a first arm pivotally mounted or connected with respect to a second arm, and a pencil receiving variable-sized aperture formed through the interior of the first arm and the second arm. The variable-sized aperture preferably alters in size and/or shape depending on the pivotal position of the first arm with respect to the second arm. The pencil receiving variable-sized aperture preferably forms a substantially conical channel when the first arm and the second arm are compressed inwardly for sharpening the pencil. In another position of the arms, the variable sized aperture permits the pencil to slide through the pencil sharpener.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: June 10, 2003
    Inventors: Carroll Vernon Lawson, Hans P. U. Verswijver
  • Pencil sharpner and method
    Publication number: 20020005100
    Abstract: The present invention is for an improved pencil sharpener that is slidingly disposed about a pencil. The pencil sharpener comprises a cutting surface, a first arm pivotally mounted or connected with respect to a second arm, and a pencil receiving variable-sized aperture formed through the interior of the first arm and the second arm. The variable-sized aperture preferably alters in size and/or shape depending on the pivotal position of the first arm with respect to the second arm. The pencil receiving variable-sized aperture preferably forms a substantially conical channel when the first arm and the second arm are compressed inwardly for sharpening the pencil. In another position of the arms, the variable sized aperture permits the pencil to slide through the pencil sharpener.
    Type: Application
    Filed: June 20, 2001
    Publication date: January 17, 2002
    Inventors: Carroll Vernon Lawson, Hans P.U. Verswijver