Patents by Inventor Curtis C. Cowan

Curtis C. Cowan 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).

  • Convergent/divergent nozzle with modulated cooling
    Patent number: 7032835
    Abstract: A nozzle system includes a multiple of circumferentially distributed convergent flaps, divergent flaps and inter-flap seals which circumscribe an engine centerline and define the radial outer boundary of a gas path. Each divergent flap includes a multiple of cooling channels with respective intakes and outlets. As the nozzle transitions between positions, the divergent flap seals move relative a divergent flap longitudinal axis to modulate the cooling airflow which enters the separate intakes.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: April 25, 2006
    Assignee: United Technologies Corporation
    Inventors: Michael J. Murphy, Curtis C. Cowan, Stephen A. Paul, James P. Allore, Meggan Harris
  • Turbine engine fuel injector
    Patent number: 6935117
    Abstract: A gas turbine engine is piloted with a pilot flow of fuel delivered to a combustor as a liquid. A first additional flow of the fuel is also delivered to the combustor as a liquid. A second additional flow of the fuel is vaporized and delivered to the combustor as a vapor. A fuel injector may have passageways associated with each of the three flows.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: August 30, 2005
    Assignee: United Technologies Corporation
    Inventor: Curtis C. Cowan
  • Sealing means for a multi-axis nozzle
    Patent number: 6357672
    Abstract: Brush seals formed in hemispherical rings are supported to the end of the convergent nozzle of the each of the clam shells of a multi-axis vector thrust nozzle of a gas turbine engine powering aircraft. The brush seal may be arced or straight and bear against the spherical surface of the collar formed on the end of the tail pipe and is mounted so that high pressure forces the bristles against the backing plate of the seals.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: March 19, 2002
    Assignee: United Technologies Corporation
    Inventors: Curtis C. Cowan, George F. Leblanc
  • Cooled liner for hot gas conduit
    Patent number: 5077969
    Abstract: A plurality of gas diffusion openings (24) direct film cooling air (26) along the surface of sheet (20). Each opening (24) includes a baffle (28) extending into gas stream (10) defining gas chamber (30) with outlet opening (32). Cool air inlet opening (34) meters and directs impingement air against the upstream end (36) of the baffle. cooling air discharge is parallel to the surface to be cooled and the baffle directs the upstream hot air flow.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: January 7, 1992
    Assignee: United Technologies Corporation
    Inventors: George P. Liang, Curtis C. Cowan