Patents by Inventor Hans Zeman

Hans Zeman 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 for bending sheets
    Patent number: 4619131
    Abstract: In a process of bending sheet metal elements having a sectional shape which is continuous in one direction, longitudinal beads are formed or existing beads are enlarged in the sheet element as it is bent at least in the region in which the bending results in an upsetting of material, i.e., in the region in which the sheet metal element is subjected to compressive stress.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: October 28, 1986
    Inventor: Hans Zeman