Patents by Inventor Franz Scheul

Franz Scheul 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).

  • Dam of earth or rock fill having impervious core
    Patent number: 4090363
    Abstract: A dam of earth or rock fill is provided with an impervious core by forming a trench near the center of the fill and sequentially building plate-shaped wall sections in the trench from poured soil-cement mixture. The wall sections which are superimposed on each other in edge-to-edge relationship are hingedly connected by joint assemblies of tough, yieldable material, such as soil-cement enriched with bentonite.
    Type: Grant
    Filed: December 16, 1975
    Date of Patent: May 23, 1978
    Assignee: Heilmann & Littmann, Bau-Aktiengesellschaft
    Inventors: Franz List, Franz Scheul