Patents by Inventor Gottfreid Zechner

Gottfreid Zechner 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).

  • Mesh welding machine
    Patent number: 4021634
    Abstract: The invention concerns a welding machine for electrically resistance welding together, to form a mesh, at their points of intersection in a mesh production plane, two crossed groups of parallel wires. The machine incorporates at least two pairs of opposed cooperating welding electrodes, one of said pairs being arranged on each side of the mesh production plane. A pair of transformers have their primary windings connected in series and each pair of said electrodes are connected to the secondary winding of one of the transformers in such a way that in operation the welding current will flow through the electrodes and through the secondary windings of the transformers in series.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: May 3, 1977
    Assignee: Firma Evg Entwicklungs-u Verwertungsgesellschaft
    Inventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter, Gottfreid Zechner, Gerhard Schmidt