Patents by Inventor Leopold Uhl

Leopold Uhl 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).

  • Nozzle block for rotary kilns
    Patent number: 4451232
    Abstract: In order to reduce the wear and to facilitate the replacement, a nozzle block comprises a mounting plate which is connected to the kiln shell, a nozzle tube which extends in the mounting tube and defines a clearance with the mounting tube and with the kiln lining, an abutment surface provided at the lower end of the nozzle tube and engaged by the orifice plate and which is clear of the body of the nozzle tube, a retaining tube which extends in the nozzle tube and defines a clearance with the nozzle tube and with the orifice plate, a gas feed duct attached to the side of the mounting tube and a cover on the mounting tube.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: May 29, 1984
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Helmut Ernst, Karl-Heinz Gehrhardt, Leopold Uhl, Hartmut Wolert