Patents by Inventor Michael Nagle

Michael Nagle 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).

  • Apparatus for directly making liquid pig-iron from coarse iron ore
    Patent number: 4448402
    Abstract: A device is described for directly making liquid pig-iron from coarse iron ore. Hot sponge-iron particles are directly conveyed by a worm conveyor (17) through a communicating passage (19) from a direct-reduction blast-furnace shaft (2) into a smelter-gasifier (1), and a stream (24) of gas flows, after cooling to below 950.degree. C., in counter-current to the sponge-iron particles, from the smelter-gasifier (1) to the blast-furnace shaft (2), this gas stream having a volumetric flow-rate not more than 30 percent of the total reduction-gas flow reaching the blast-furnace shaft (FIG. 1).
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: May 15, 1984
    Assignees: Korf Engineering GmbH, Voest-Alpine AG
    Inventors: Ralph Weber, Bernt Rollinger, Rolf Hauk, Michael Nagle, Bernhard Rinner