Patents by Inventor John P. Nikkanen

John P. Nikkanen 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).

  • Pressurized nacelle compartment for active clearance controlled gas turbine engines
    Patent number: 4493184
    Abstract: Methods and apparatus for improving the thrust specific fuel consumption (TSFC) of a gas turbine engine employing an exterior active clearance control system are disclosed.The pressure within the nacelle compartment to which active clearance control air is discharged is operated under altitude cruise conditions at a level on the order of one to two and one-half pounds per square inch (1-21/2 psi) above the ambient atmosphere. Flow discharging from the nacelle is directed through an aft facing vent nozzle for purposes of thrust recovery.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: January 15, 1985
    Assignee: United Technologies Corporation
    Inventors: John P. Nikkanen, James G. Griffin
  • Combined surge bleed and dust removal system for a fan-jet engine
    Patent number: 4463552
    Abstract: Contaminated air injected by an axial flow fan jet engine is treated by centrifuging the contamination through the surge bleed valves into the fan discharge stream in an efficient manner.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: August 7, 1984
    Assignee: United Technologies Corporation
    Inventors: Richard J. Monhardt, Louis Kudlacik, John P. Nikkanen, Juri Niiler