Patents by Inventor Robert W. Keimel

Robert W. Keimel 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).

  • Smokestack having reduced IR emission
    Patent number: 5000161
    Abstract: An aircooled smokestack. The smokestack has passages within it for air or her cooling fluid. The fluid circulates through the smokestack, cooling off the internal and external surfaces. The cooling fluid is then aspirated into the stack gases near the top of the stack, thereby film cooling the upper portion of the interior of the stack. Cooling air is also aspirated into the flowing gases at the top of the stack, thereby cooling the gases as they leave the stack.
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: March 19, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert W. Keimel, Arthur C. Keimel, John F. Thomas