Patents by Inventor Paul J. Chappell

Paul J. Chappell 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).

  • Intelligent afterburner injection control to minimize pollutant emissions
    Patent number: 5520123
    Abstract: An intelligent oxygen injection control system for afterburners which minimizes transient incinerator pollutant emissions while simultaneously minimizing oxygen consumption. A fuzzy logic-based controller utilizes inputs from sensors that measure gas phase pollutant species such as hydrocarbons and carbon monoxide to control oxygen injection and thus minimize pollutant emissions while minimizing oxygen consumption.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: May 28, 1996
    Assignee: The United States of America as represented by the Administrator of the Environmental Protection Agency
    Inventors: Paul J. Chappell, Keith J. Fritsky, Paul M. Lemeiux, Charles A. Miller
  • Fuzzy logic integrated control method and apparatus to improve motor efficiency
    Patent number: 5272428
    Abstract: The power efficiency of an electric motor driven load including an adjustable speed drive is improved through use of a fuzzy logic controller to provide a power efficiency signal. A fuzzy rule base controls sequential power changes based on a determination of the effect of previous changes to meet load demands on a reduced power input basis.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: December 21, 1993
    Assignee: The United States of America as represented by the U.S. Environmental Protection Agency
    Inventors: Ronald J. Spiegel, Paul J. Chappell