Patents by Inventor Richard L. Barnhart

Richard L. Barnhart 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).

  • Electroluminescent wrist lamp for night vision environment
    Patent number: 4425600
    Abstract: An apparatus for use in the cockpit of an aircraft which provides sufficient illumination to read the cockpit display indicators, controls and charts but does not destroy the pilot's night vision. A casing, which is normally worn on the wrist of the pilot, contains a microencapsulated electroluminescent phosphorus lamp which provides illumination that will not affect the pilot's night vision. The lamp is powered by an inverter which is connected through a switch to a power supply, all of which are also contained within the case.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: January 10, 1984
    Inventor: Richard L. Barnhart