Patents by Inventor Josef Rohrmulle

Josef Rohrmulle 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).

  • Cordless position detection apparatus
    Patent number: 5557076
    Abstract: A cordless position detection apparatus includes a position detection area and a pointer. A plurality of conductors are arranged side-by-side in the position detection area. The position detection area has a selection circuit for selecting single conductors, and a transmitting circuit that provides a transmitting signal having at least one harmonic to a selected conductor. A pointer for use with the position detecting area includes a resonance circuit which is tuned to an harmonic of the transmitting signal. The pointer is excited by the transmitting signal to oscillate and radiates a receiving signal. A receiving circuit in the detection apparatus detects the receiving signal in a selected conductor and processing means uses this received signal to determine a position indicated by the pointer.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: September 17, 1996
    Assignee: Mikron Gesellschaft Fur
    Inventors: Rudi Wieczorek, Dietrich Hahn, Josef Rohrmulle