Patents by Inventor Gerald Effenberg

Gerald Effenberg 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).

  • Method and device for connecting overlapping flat parts
    Patent number: 6473957
    Abstract: The invention relates to a method for connecting overlapping flat parts in a mechanical joining process, for example for connecting panels, using a mould stamp (1a) and a matrix which is provided with a recess, the parts to be connected being placed between the mould stamp and the matrix. The invention is characterized in that the active axial advancing movement of the mould stamp (1a) is impressed with a tumbling motion throughout the entire joining process or during a part of the joining process and will a variable stamping force (F) which is dependent on said tumbling motion, in or to produce a flow of material that is oriented towards the undercut (6). The invention also relates to a device for carrying out the inventive method.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: November 5, 2002
    Assignee: Technische Universitaet Dresden
    Inventors: Wolfgang Voelkner, Gerald Effenberg, Reinhard Mauermann