Patents by Inventor Frank V. Razgaitis

Frank V. Razgaitis 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).

  • Charging apparatus for shaft furnaces and method
    Patent number: 4116345
    Abstract: Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means that causes charge material to be deposited and distributed in the upper portion or throat of the furnace either toward the outer periphery of the cross section in the furnace bounded by the interior surface of the furnace wall or toward the center of such cross section, or in both places, to provide an upper surface or stockline or charge material that is essentially level or of any other desired shape within substantial limits.
    Type: Grant
    Filed: August 13, 1975
    Date of Patent: September 26, 1978
    Assignee: Arthur G. McKee & Company
    Inventors: Melvin J. Greaves, Frank V. Razgaitis
  • Charging apparatus for shaft furnaces
    Patent number: 4050592
    Abstract: Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means that causes charge material to be deposited and distributed in the upper portion or throat of the furnace either toward the outer periphery of the cross section in the furnace bounded by the interior surface of the furnace wall or toward the center of such cross section, or in both places, to provide an upper surface or stockline of charge material that is essentially level or of any other desired shape within substantial limits.
    Type: Grant
    Filed: July 1, 1976
    Date of Patent: September 27, 1977
    Assignee: Arthur G. McKee & Company
    Inventors: Melvin J. Greaves, Frank V. Razgaitis
  • Charging apparatus for receptacles
    Patent number: 4026427
    Abstract: Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means that causes charge material to be deposited and distributed in the upper portion or throat of the furnace either toward the outer periphery of the cross section in the furnace bounded by the interior surface of the furnace wall or toward the center of such cross section, or in both places, to provide an upper surface or stockline of charge material that is essentially level or of any other desired shape within substantial limits.
    Type: Grant
    Filed: July 2, 1976
    Date of Patent: May 31, 1977
    Assignee: Arthur G. McKee & Co.
    Inventors: Melvin J. Greaves, Frank V. Razgaitis