Patents by Inventor Daniel R. Flaherty

Daniel R. Flaherty 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).

  • Patent number: 4662546
    Abstract: A submerged nozzle for use in introducing molten metal below the surface of a molten metal pool in a flow-through continuous casting mold. The nozzle is tubular and has an upper end connected to a source of molten metal to be introduced to the mold for casting. The lower end of the nozzle is closed and adjacent this end are two molten metal outlet ports of equal diameter and in opposed relation with each being axially inclined upwardly at an angle of about 15.degree.. Four additional equal diameter molten metal outlet ports with a diameter of each being larger than the diameter of the said two molten metal outlet ports are positioned adjacent said lower end of the nozzle in diametrically opposed pairs with each pair being nonradial at an included angle of 30.degree. and inclined upwardly at an angle of about 15.degree..
    Type: Grant
    Filed: July 30, 1985
    Date of Patent: May 5, 1987
    Assignee: Allegheny Ludlum Corporation
    Inventors: John E. Mosser, Daniel R. Flaherty, James R. Riedl
  • Patent number: 4657066
    Abstract: A method is provided for producing substantially austenitic stainless steel strip, particularly chromium-nickel grades, having ultra low sulfur levels up to 0.002% by conventionally continuously casting the slab and thereafter hot rolling the slab to hot-rolled band by improving the ability to achieve hot-rolled band having good surface quality as characterized by reduced metallurgical slivers.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 14, 1987
    Assignee: Allegheny Ludlum Corporation
    Inventors: Clifford R. Whiddon, Daniel R. Flaherty, Lawrence E. Turowski