Patents by Inventor Gerald Anderka

Gerald Anderka 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).

  • Automatic drafting instrument with stylographic pen
    Patent number: 4173020
    Abstract: An automatic drafting instrument of the type supporting a plurality of stylographic pens above a drafting surface. The instrument includes a reciprocating mechanism for lowering the pens from an upper rest position to a lower drafting position in contact with the drafting surface. The device is characterized by a vertically actuable and pivotable sealing element which engages the writing pen tip in its rest position and is actuable vertically downwardly and pivotably away from the pen as it is lowered to the writing surface.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: October 30, 1979
    Assignees: Rotring-Werke Riepe KG, Aristo-Werke Dennert & Pape KG
    Inventors: Gerald Anderka, Klaus Straszewski, Walter Jozat, Eduard Schutt, Wolfgang Puritz