Patents by Inventor Fritz L. Hemker

Fritz L. Hemker 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).

  • Pulverized fuel delivery system for a blast furnace
    Patent number: RE31572
    Abstract: A pulverized fuel delivery system for a blast furnace in which pulverized coal is delivered in dense phase fluidized form into the blast furnace from gas pressurized tanks that are placed in communication, one at a time, in cyclical sequence with a penumatic transport means. The tank gas pressure is regulated in accordance with the blast furnace wind rate to control the weight flow rate of pulverized coal into the furnace and the transport gas flow rate is regulated in accordance with the fuel weight flow rate to maintain a prescribed transport gas flow rate per pound of coal delivered to the furnace.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: May 1, 1984
    Assignee: The Babcock & Wilcox Company
    Inventors: Earl E. Coulter, Fritz L. Hemker, Elias A. Kazmierski