Patents by Inventor Richard Hitzigrath

Richard Hitzigrath 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).

  • Fuel/auxiliary oil thermal management system
    Patent number: 4705100
    Abstract: An arrangement that uses aircraft fuel as a heat sink for aircraft auxiliary oil systems for an aircraft having at least one engine operated by fuel and having an engine interface limit and including a fuel/oil heat exchanger for removing heat from the aircraft auxiliary oil systems and having a fuel outlet temperature, a temperature sensing for determining temperature of the fuel leaving the fuel/oil heat exchanger, a recirculating flow control valve having variable positions including an open and a closed position controlled by the temperature sensor, the fuel always going to the aircraft engine but also going through the flow control valve when the flow control valve is in the open position so that recirculation is minimized and maximum heat is rejected to the engine by the fuel outlet temperature of the fuel/oil heat exchanger when the fuel outlet temperature of the fuel/oil heat exchanger is controlled by the engine interface limit, a ram air heat exchanger for removing heat from the fuel leaving the rec
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: November 10, 1987
    Assignee: Grumman Aerospace Corp.
    Inventors: Stephen J. Black, Richard Hitzigrath, Arnold Rosenblatt, Douglas H. Grundy