Patents by Inventor Gerd-Ullrich Leppert

Gerd-Ullrich Leppert 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).

  • Transfer flue with means for improving the flow of gases
    Patent number: 4561843
    Abstract: A refractory brick is installed in a transfer flue with vertical orifices disposed between, on the one hand, the regenerators or recuperators and, on the other hand, the combustion chambers of industrial gas-fired systems, particularly a coke oven. The refractory brick has parallel surfaces and the length of the orifices in the brick is at least six times their diameter. The sum of the cross-sectional areas of the orifices is from 0.75 to 1.5 times the flow cross section of the upwardly-inclined portion of the transfer flue. The cross sections of the orifices can be cylindrical or elliptical. The orifices can be longitudinal slots whose cross-sectional areas are bounded by semicircles and whose cross-sectional length is not greater than three times the diameter of the semicircles.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: December 31, 1985
    Assignee: Dr. C. Otto & Comp. G.m.b.H.
    Inventors: Carl-Heinz Struck, Ralf Schumacher, Ingomar Kohler, Gerd-Ullrich Leppert