Patents by Inventor Theodore Hilgeman

Theodore Hilgeman 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).

  • Infrared camouflage system
    Patent number: 4609034
    Abstract: Military mechanical field equipment, such as an electrical generator, is camouflaged from airborne IR detection by enclosing the equipment in a double-walled enclosure having hollow walls through which air is forced to flow. By adjusting the air flow in the enclosure, the radiance from the enclosure can be made the same as its immediate surroundings. A dual temperature sensor senses temperature differences between the enclosure surface and the surroundings and varies the air cooling accordingly until thermal balance is achieved.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: September 2, 1986
    Assignee: Grumman Aerospace Corporation
    Inventors: Robert Kosson, Jonas Bilenas, Salvatore Attard, Theodore Hilgeman