Patents by Inventor Rudolf Dotsch

Rudolf Dotsch 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).

  • Vertical broaching machine
    Patent number: 5833411
    Abstract: A vertical broaching machine comprises a machine stand having an upper rail and a lifting carriage displaceably guided on the stand and drivable by means of lifting spindles which are supported in spindle nuts lodged in the rail for rotational driving. An upper workpiece holder is mounted on the rail, holding a broach when a compressive broaching job is carried out.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: November 10, 1998
    Assignee: Oswald Forst Maschinenfabrik u. Apparatebauanstalt GmbH & Co. Kommanditgesellschaft
    Inventors: Herbert Holstein, Rudolf Dotsch, Andreas Berktold