Patents by Inventor Earl R. Williams

Earl R. Williams 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).

  • Airfield lighting system
    Patent number: 5969642
    Abstract: A microprocessor-controlled airfield lighting control and monitoring system having bi-directional communication between the controlling microprocessor and the airfield lights and/or sensors. The system also includes a metal container for the remote control microprocessor and an improved attachment arrangement for the power transistor associated therewith. A DC power supply is connected to the remote controller microprocessor and has an integrated circuit adapted to sense a threshold voltage, which causes the power transistor to short around the associated power source.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: October 19, 1999
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Edwin K. Runyon, Harold R. Williams, Todd E. McCorkle, Mark E. Weihs, Earl R. Williams
  • Airfield lighting system
    Patent number: 5485151
    Abstract: A microprocessor-controlled airfield lighting control and monitoring system having bi-directional communication between the controlling microprocessor and the airfield lights and/or sensors. The system also includes a metal container for the remote control microprocessor and an improved attachment arrangement for the power transistor associated therewith. A DC power supply is connected to the remote controller microprocessor and has an integrated circuit adapted to sense a threshold voltage, which causes the power transistor to short around the associated power source.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: January 16, 1996
    Assignee: ADB-Alnaco, Inc.
    Inventors: Edwin K. Runyon, Harold R. Williams, Todd E. McCorkle, Mark E. Weihs, Earl R. Williams