Patents by Inventor Erik August Wilhelmsson

Erik August Wilhelmsson 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).

  • Patent number: 4011934
    Abstract: An ink ribbon arrangement for a high speed printer, wherein the printer has a printing device which is movable in a given direction with respect to a recording medium. The ink ribbon comprises a pair of spools, and ribbon guides for guiding the ribbon between these spools in a path such that the ink ribbon extends past the printing device. The spools and the ribbon guides are mounted to form a single unit that is pivotally movable about an axis normal to the direction of relative movement between the printing device and recording medium. The unit may thus be moved to a printing position, wherein the ribbon extends obliquely with respect to the relative direction of movement between the printing device and the recording medium, and to a further position at which it extends substantially parallel to and below a line of text printed on the recording medium, thereby enabling reading of the line of text.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: March 15, 1977
    Assignee: Facit Aktiebolag
    Inventors: Bernt Inge Lennart Ploby, Erik August Wilhelmsson