Patents by Inventor Lemuel E. Dolan

Lemuel E. Dolan 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).

  • Cascaded steam temperature control applied to a universal pressure boiler
    Patent number: 5279263
    Abstract: The firing rate and the feedwater flow rate of a universal pressure boiler are controlled using a cascaded steam temperature control system. The secondary superheater outlet temperature comprises an outer loop for the control system, while the convection pass outlet temperature comprises an inner loop for the control system. Control variables for the system include the secondary superheater outlet temperature, the convection pass outlet temperature and the difference between the primary superheater outlet temperature and the secondary superheater inlet temperature.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: January 18, 1994
    Assignee: Elsag International B.V.
    Inventors: Max-Alix Cameau, Alfred Schultz, Lemuel E. Dolan