Patents by Inventor Paul M. Lutjen

Paul M. Lutjen 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).

  • Seal assembly for sealing an axial gap between components
    Patent number: 10301956
    Abstract: A seal assembly extends along an axis and seals an axial (and/or radial) gap between a first component and a second component. The seal assembly includes a seal carrier and a seal element. The seal element extends axially (and/or radially) between a first portion and a second portion. The first portion of the seal element is slidingly arranged within a slot in an axial end (or a radial side) of the seal carrier. The second portion of the seal element is configured to axially (and/or radially) engage the second component.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: May 28, 2019
    Assignee: United Technologies Corporation
    Inventors: Paul M. Lutjen, Timothy M. Davis, Mark J. Rogers
  • Sliding seal
    Patent number: 10260364
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the second seal section and bias the first and second seal sections away from one another.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: April 16, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Paul M. Lutjen, Jeremy Drake, Timothy M. Davis
  • Outer airseal insulated rub strip
    Patent number: 10247027
    Abstract: A blade outer airseal has a body comprising: an inner diameter (ID) surface; an outer diameter (OD) surface; a leading end; and a trailing end. The airseal body has a metallic substrate and a coating system atop the substrate along at least a portion of the inner diameter surface. At least over a first area of the inner diameter surface, the coating system comprises an abradable layer and a thermal barrier layer between the abradable layer and the substrate; and the thermal barrier layer comprises a ceramic and metallic phases within the ceramic.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: April 2, 2019
    Assignee: United Technologies Corporation
    Inventors: Philip R. Rioux, Nicholas R Leslie, Paul M. Lutjen, Christopher W. Strock
  • Gas turbine engine blade outer air seal thermal control system
    Patent number: 10247028
    Abstract: A clearance control system for a gas turbine engine is provided. The system includes an inner axial wall that extends between a forward wall and an aft wall. The system also includes an outer axial wall that extends parallel to the inner axial wall to pivotally receive a full hoop thermal control ring.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: April 2, 2019
    Assignee: United Technologies Corporation
    Inventors: Ken F. Blaney, Paul M. Lutjen
  • Segmented Ceramic Coatings and Methods
    Publication number: 20190078463
    Abstract: A method comprising: spraying a ceramic coating to a substrate to a thickness of at least 5.0 mils (127 micrometers) without quench; and after the spraying, directing a carbon dioxide flow to a surface of the coating.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 14, 2019
    Applicant: United Technologies Corporation
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • Actively cooled blade outer air seal
    Patent number: 10221767
    Abstract: A turbine component includes a main body with an upstream end and a downstream end. A cooling passage network is interior to the main body and has multiple cooling passages. A shared passage wall in the cooling passage network includes a cross passage opening connecting each passage partially defined by the shared passage wall. The cross passage further including a pressure balancing feature operable to reduce a local pressure differential in a fluid pressure in each adjacent passage at the cross passage.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 5, 2019
    Assignee: United Technologies Corporation
    Inventors: Dmitriy A. Romanov, Paul M. Lutjen
  • Multi-axial brush seal
    Patent number: 10208674
    Abstract: A seal assembly, includes a first brush supported between first and second plates, a second brush supported on the first and second plates transverse to the first brush seal, and a third plate attached to the second brush.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 19, 2019
    Assignee: United Technologies Corporation
    Inventor: Paul M. Lutjen
  • Sliding seal
    Patent number: 10202862
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section, a second seal section, and (in some embodiments) a third seal section. Two or three of the seal sections are uncoupled, which allows the uncoupled seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the second seal section and bias the first and third (or in some embodiments, the first and second) seal sections away from one another.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: February 12, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Timothy M. Davis, Paul M. Lutjen
  • Blade outer air seal with cored passages
    Patent number: 10196917
    Abstract: A blade outer air seal for a gas turbine engine includes a wall, a forward hook, and an aft hook. The wall extends between the forward hook and the aft hook, which are adapted to mount the blade outer air seal to a casing of the gas turbine engine. The wall includes a cored passage extending along at least a portion of the wall. The cored passage extends radially and axially through a portion of the aft hook to communicate with one or more apertures along a trailing edge of the aft hook.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: February 5, 2019
    Assignee: United Technologies Corporation
    Inventors: Paul M. Lutjen, Shawn J. Gregg, Thurman Carlo Dabbs, Ken F. Blaney, Russell E. Keene, Bruce E. Chick
  • Bifurcated sliding seal
    Patent number: 10196912
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. A wave spring and/or a rope seal is disposed between the first and second seal sections biases the first and second seal sections away from one another.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: February 5, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Timothy M Davis, Paul M Lutjen
  • Blade outer air seal cooling scheme
    Patent number: 10184353
    Abstract: A cooling scheme for a blade outer air seal includes a perimeter cooling arrangement configured to convectively cool a perimeter of the blade outer air seal, and a core cooling arrangement configured to cool a central portion of the blade outer air seal through impingement cooling and to provide film cooling to an inner diameter face of the blade outer air seal.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: January 22, 2019
    Assignee: United Technologies Corporation
    Inventors: Susan M. Tholen, Dominic J. Mongillo, Paul M. Lutjen, James N. Knapp, Virginia L. Ross, Jonathan J. Earl, Eric A. Hudson
  • Sliding seal
    Patent number: 10167730
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section including one or more first slots formed therein, a second seal section including one or more second slots formed therein and one or more frustoconical rings disposed in respective ones of the slots, such that the first and second seal sections and the frustoconical rings move relative to one another during relative movement between the two components. A wave spring disposed between the first and second seal sections biases the first and second seal sections away from one another.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: January 1, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Timothy M. Davis, Paul M. Lutjen, Mark J. Rogers
  • 2 ply W-seal using dissimilar materials
    Patent number: 10167957
    Abstract: A metal gasket bellows seal includes a first ply comprised of a first material having a first yield strength. The metal gasket bellows seal also includes a second ply positioned adjacent to the first ply and comprised of a second material having a second yield strength that is less than the first yield strength.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: January 1, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Timothy M. Davis, Terence P. Tyler, Jr., Jose R. Paulino, Paul M. Lutjen
  • Compressor case snap assembly
    Patent number: 10167738
    Abstract: A turbine engine case spacer includes an air seal and a flange. The air seal is snap fit to the flange, and each flange includes at least two distinct material layers.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 1, 2019
    Assignee: United Technologies Corporation
    Inventors: Richard K. Hayford, Paul M. Lutjen
  • COMPRESSOR INNER AIR SEAL AND METHOD OF MAKING
    Publication number: 20180372111
    Abstract: An inner air seal includes a bond coat disposed on a substrate, an interlayer disposed on the bond coat, and an abrasive layer disposed on the interlayer.
    Type: Application
    Filed: June 26, 2017
    Publication date: December 27, 2018
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • TURBINE COOLING AIR METERING ARRANGEMENT
    Publication number: 20180347395
    Abstract: A cooling system for a turbine engine includes a structure defining a fluid passageway. The fluid passageway includes an impingement surface. A first opening into the fluid passageway is also included. The first opening is disposed opposite the impingement surface of the fluid passageway such that airflow entering the fluid passageway impacts the impingement surface. An agglomerate retention structure is disposed on the impingement surface. The agglomerate retention structure holds particulates impacting the impingement surface entering through the opening. A turbine engine is also disclosed.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • METERING HOLE GEOMETRY FOR COOLING HOLES IN GAS TURBINE ENGINE
    Publication number: 20180347396
    Abstract: A turbine may include a blade coupled to a rotor, a vane upstream from the blade and coupled to a vane support that defines a metering hole, and a blade outer air seal disposed radially outward from the blade and downstream from the vane support. An impingement surface may be disposed between the vane support and the blade outer air seal. The impingement surface may be oriented at an angle to the metering hole of between 50 degrees and 5 degrees.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Applicant: United Technologies Corporation
    Inventors: Paul M. Lutjen, Christopher W. Strock
  • Blade outer air seal
    Patent number: 10145257
    Abstract: According to various embodiments, disclosed is a blade outer air seal assembly for a turbine engine comprising a main body portion that extends generally axially, with respect to a central axis of the turbine engine, from a leading edge portion of the main body to a trailing edge portion of the main body, wherein the leading edge portion includes a leading edge wall having a undercut profile along at least a portion of the leading edge wall, wherein the main body portion comprises cooling passages comprising a leading edge cooling passage adjacent to the leading edge wall, having a leading edge periphery on a side of the leading edge cooling passage adjacent to the leading edge wall, which generally conforms to the undercut profile of the leading edge wall.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 4, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Dmitriy A. Romanov, Paul M. Lutjen, Kevin J. Ryan, Ken F. Blaney
  • Gas turbine engine components with optimized leading edge geometry
    Patent number: 10138748
    Abstract: A gas turbine engine component is provided. The gas turbine engine component comprises a main body having a leading edge and a leading edge wall including an elongated transition portion extending between the leading edge and a proximate flowpath surface of the main body. The elongated transition portion has an axial length that is greater than a radial height. A gas turbine engine is also provided.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: November 27, 2018
    Assignee: United Technologies Corporation
    Inventors: Thomas J. Praisner, Paul M. Lutjen, Ken F. Blaney, Anthony B. Swift, Neil L. Tatman, Christopher M. Jarochym
  • Chordal seal with sudden expansion/contraction
    Patent number: 10113436
    Abstract: A static component for a gas turbine engine includes an axially extending body comprising a forward end and an aft end disposed axially downstream from the forward end. A rib is formed on at least one of the forward end and the aft end of the axially extending body and extending axially from the axially extending body. A recess is formed in the rib.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: October 30, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Philip Robert Rioux, Paul M. Lutjen