Patents by Inventor William Hatfield

William Hatfield 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).

  • Patent number: 7098774
    Abstract: A system for monitoring and controlling activation of a warning system includes a sensor module locally coupled to the warning system for sensing and controlling a flashing light of the warning system, a transceiver responsive to a microcontroller, and a power line interface for interfacing between the transceiver and the power line servicing the warning system. The sensor module includes a sensor arranged for sensing the flashing light, the microcontroller coupled to the sensor, and a power supply for providing power to the sensor module.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: August 29, 2006
    Assignee: General Electric Company
    Inventors: David Davenport, Ralph Hoctor, William Hatfield, Kuna Kishore, Mukesh Soni, Dennis Cusano
  • Publication number: 20050237215
    Abstract: A system for monitoring alignment of a signal lamp includes at least one sensor and threshold detection circuitry. The sensor is positioned about the signal lamp and is configured to measure at least one of azimuthal and elevational movement of the signal lamp and generate an electrical signal. The threshold detection circuitry is configured to receive signals representative of the azimuthal and elevational movement of the signal lamp from the sensor. The threshold detection circuitry determine a change in alignment of the signal lamp according to at least one of the azimuthal movement signals and the elevational movement signals.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 27, 2005
    Inventors: William Hatfield, Kenneth Welles, Harry Mathews, Emad Andarawis, David Davenport, Dennis Cusano, Ganesh Gangadharan, Ertugrul Berkcan
  • Publication number: 20050231376
    Abstract: A system for monitoring the condition of a lighting system comprises a lamp assembly where a lamp is disposed in a housing and a lens is disposed adjacent to the lamp, a conductor disposed on the lens and adapted to lose electrical continuity upon occurrence of a crack in the lens. Furthermore, a monitoring system is coupled to the conductor and is configured to detect the loss of electrical continuity in the conductor, which is indicative of the occurrence of a crack in the railroad signal lens.
    Type: Application
    Filed: March 30, 2004
    Publication date: October 20, 2005
    Inventors: William Hatfield, Kenneth Welles, James Carnahan, David Davenport
  • Publication number: 20040119587
    Abstract: A system for monitoring and controlling activation of a warning system includes a sensor module locally coupled to the warning system for sensing and controlling a flashing light of the warning system, a transceiver responsive to a microcontroller, and a power line interface for interfacing between the transceiver and the power line servicing the warning system. The sensor module includes a sensor arranged for sensing the flashing light, the microcontroller coupled to the sensor, and a power supply for providing power to the sensor module.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Inventors: David Davenport, Ralph Hoctor, William Hatfield, Kuna Kishore, Mukesh Soni, Dennis Cusano