Patents by Inventor Willis M. Hendricks

Willis M. Hendricks 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).

  • Control system for reducing NOx emissions from a multiple-intertube pulverized-coal burner using true delivery pipe fuel flow measurement
    Patent number: 6659026
    Abstract: A control system for providing improved control over the combustion process of a multiple-intertube pulverized-coal burner that commonly forms a portion of a roof-fired boiler. The system utilizes actual mass fuel flow measurements to calculate corrected, optimal secondary and interjectory air demands. The corrected secondary and interjectory air demands are used by a proportional and integral control loop to regulate the respective supply of secondary and interjectory air to the combustion process of each in-service burner. The control system allows for optimal combustion of the fuel and a reduction in NOx emmissions.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: December 9, 2003
    Assignee: AEP EmTech LLC
    Inventors: Willis M. Hendricks, John J. Letcavits