Patents by Inventor Hans-Reiner Eilers

Hans-Reiner Eilers 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).

  • Self-supporting staircase with center post consisting of individual structural elements
    Patent number: 4285178
    Abstract: A self-supporting staircase of which the treads are mounted on structural elements which interconnect in series to form an ascending center post. Each structural element comprises two spaced cylinders connected by a radial arm, the upper end of the first cylinder telescoping with the lower end of the second cylinder of an adjacent element in the series. Means is provided for securing the elements together. Thus the assembled elements are horizontally offset from each other to the extent required by the successive treads mounted on the elements.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: August 25, 1981
    Inventors: Gunter Holzkampfer, Hans-Reiner Eilers