Patents by Inventor Birger H. Ek

Birger H. Ek 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 marking an information carrying medium
    Patent number: 4109776
    Abstract: In a marking device for marking an information carrying medium, a marking tip is provided on an arm, and the arm is resiliently mounted by means of a leaf spring. In order to relieve stresses on the joints between the leaf spring and the arm, a region of the leaf spring to which the arm is affixed is bent, so that one portion of the leaf spring is affixed to the side of the arm toward the information carrying medium, and another portion of the leaf spring is affixed to the opposite side of the arm.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: August 29, 1978
    Assignee: Facit Aktiebolag
    Inventors: Birger H. Ek, Sven G. V. Stenudd