Patents by Inventor David A. Litton

David A. Litton 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).

  • NANOPARTICLE FORMATION MITIGATION IN A DEPOSITION PROCESS
    Publication number: 20160115584
    Abstract: A system for depositing coating on a workpiece includes a deposition chamber within which is formed a vortex to at least partially surround a workpiece therein.
    Type: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Inventors: James W. Neal, Brian T. Hazel, David A. Litton, Eric Jorzik
  • Deposition Apparatus and Methods
    Publication number: 20160060748
    Abstract: A deposition apparatus (20) comprising: a chamber (22); a process gas source (62) coupled to the chamber; a vacuum pump (52) coupled to the chamber; at least two electron guns (26); one or more power supplies (30) coupled to the electron guns; a plurality of crucibles (32,33,34) positioned or positionable in an operative position within a field of view of at least one said electron gun; and a part holder (170) having at least one operative position for holding parts spaced above the crucibles by a standoff height H. The standoff height H is adjustable in a range including at least 22 inches.
    Type: Application
    Filed: March 14, 2014
    Publication date: March 3, 2016
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian T. Hazel, Michael J. Maloney, James W. Neal, David A. Litton
  • PRESSURE MODULATED COATING
    Publication number: 20160040284
    Abstract: A method or control strategy in a coating apparatus for use in a coating process can include controlling differential gas pressures among multiple selected localized zones in a coating chamber with respect to each other. The controlled differential gas pressure of the multiple selected localized zones is used to influence how a coating deposits on at least one component.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 11, 2016
    Inventors: Dmitri Novikov, Sergei F. Burlatsky, David Ulrich Fuller, David A. Litton
  • Hybrid Thermal Barrier Coating and Process of Making Same
    Publication number: 20160017475
    Abstract: A thermal barrier coating is applied to a turbine engine component having a substrate. The thermal barrier coating has a first layer which has a strain tolerant columnar microstructure at an interface with the substrate for spallation resistance and a second layer which is porous conduction and radiation thermally resistant at an outer surface of the thermal barrier coating.
    Type: Application
    Filed: December 30, 2013
    Publication date: January 21, 2016
    Inventors: Brian T Hazel, David A Litton, Michael J Maloney
  • Deposition Apparatus and Use Methods
    Publication number: 20150361556
    Abstract: A deposition apparatus comprises: an infeed chamber; a preheat chamber; a deposition chamber; and optionally at least one of a cooldown chamber and an outlet chamber. At least a first of the preheat chamber and the cooldown chamber contains a buffer system for buffering workpieces respectively passing to or from the deposition chamber.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 17, 2015
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: James W. Neal, David A. Litton, Brian T. Hazel, Michael J. Maloney, Eric M. Jorzik
  • Thermal Barrier Coating for CMAS Resistance and Low Thermal Conductivity
    Publication number: 20150336850
    Abstract: A thermal barrier coating for a turbine engine component contains neodymia, optionally alumina, and zirconia. The thermal barrier coating has resistance to CMAS attack and a low thermal conductivity.
    Type: Application
    Filed: January 21, 2013
    Publication date: November 26, 2015
    Inventors: Mario P Bochiechio, David A Litton, Michael J Maloney
  • COATING SYSTEM AND PROCESS
    Publication number: 20150203954
    Abstract: A coating system for coating a part (10), such as a turbine blade or vane, has a mask (14) positioned adjacent to a first portion (16) of the part (10) to be coated and a mechanism (30) for moving the mask (14) relative to the part (10). The mechanism (30) may be a gear mechanism or a magnetic mechanism.
    Type: Application
    Filed: July 31, 2013
    Publication date: July 23, 2015
    Inventors: James W Neal, David A Litton, Russell A Beers, Benjamin Joseph Zimmerman, Michael J. Maloney
  • Article having thermal barrier coating
    Patent number: 9051652
    Abstract: An article includes a metallic substrate and a tri-layer thermal barrier coating that is deposited on the metallic substrate. The tri-layer thermal barrier coating includes an inner ceramic layer, an outermost ceramic layer relative to the metallic substrate, and an intermediate ceramic layer between the inner ceramic layer and the outermost ceramic layer. The inner ceramic layer and the outermost ceramic layer are composed of respective first and second ceramic materials and the intermediate ceramic layers composed of a third, different ceramic material. The inner ceramic layer has a first thickness, the outermost ceramic layer has a second thickness, and the intermediate ceramic layer has a third thickness that is greater than the first thickness and the second thickness.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: June 9, 2015
    Assignee: United Technologies Corporation
    Inventors: James W. Neal, Michael J. Maloney, Benjamin Joseph Zimmerman, Christopher Masucci, David A. Litton
  • Platinum-modified cathodic arc coating
    Patent number: 8968528
    Abstract: A process for coating a part comprises the steps of providing a chamber which is electrically connected as an anode, placing the part to be coated in the chamber, providing a cathode formed from a coating material to be deposited and platinum, and applying a current to the anode and the cathode to deposit the coating material and the platinum on the part.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: March 3, 2015
    Assignee: United Technologies Corporation
    Inventors: Brian S. Tryon, Michael J. Maloney, David A. Litton
  • Zirconium modified protective coating
    Patent number: 8920937
    Abstract: A protective coating system includes a nickel-aluminum-zirconium alloy coating having beta phase nickel-aluminum and at least one phase selected from gamma phase nickel and the gamma prime phase nickel-aluminum. The nickel-aluminum-zirconium alloy coating comprises 10 vol % to 60 vol % of the beta phase nickel-aluminum or 25 vol % to 75 vol % of the beta phase nickel-aluminum.
    Type: Grant
    Filed: August 5, 2007
    Date of Patent: December 30, 2014
    Assignee: United Technologies Corporation
    Inventors: David A. Litton, Venkatarama K. Seetharaman, Michael J. Maloney, Benjamin J. Zimmerman, Brian S. Tryon
  • THERMAL BARRIER COATING HAVING OUTER LAYER
    Publication number: 20140220324
    Abstract: A component according to an exemplary aspect of the present disclosure includes, among other things, a substrate, a thermal barrier coating deposited on at least a portion of the substrate, and an outer layer deposited on at least a portion of the thermal barrier coating. The outer layer includes a material that absorbs energy in response to an impact event along at least a portion of the outer layer.
    Type: Application
    Filed: August 15, 2012
    Publication date: August 7, 2014
    Inventors: Christopher W. Strock, Michael Maloney, David A. Litton, Benjamin Joseph Zimmerman, Brian T. Hazel
  • ECONOMIC OXIDATION AND FATIGUE RESISTANT METALLIC COATING
    Publication number: 20140127416
    Abstract: The present disclosure relates to an improved low-cost metallic coating to be deposited on gas turbine engine components. The metallic coating consists of 1.0 to 18 wt % cobalt, 3.0 to 18 wt % chromium, 5.0 to 15 wt % aluminum, 0.01 to 1.0 wt % yttrium, 0.01 to 0.6 wt % hafnium, 0.0 to 0.3 wt % silicon, 0.0 to 1.0 wt % zirconium, 0.0 to 10 wt % tantalum, 0.0 to 9.0 wt % tungsten, 0.0 to 10 wt % molybdenum, 0.0 to 43.0 wt % platinum, and the balance nickel.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian S. Tryon, David A. Litton, Russell A. Beers
  • Deposition apparatus having thermal hood
    Patent number: 8709160
    Abstract: A deposition apparatus includes a coating chamber and a coating zone within the coating chamber for coating work pieces. A heating source heats the coating zone, and a thermal hood within the coating chamber is located adjacent to the coating zone for controlling a temperature of the coating zone.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: April 29, 2014
    Assignee: United Technologies Corporation
    Inventors: James W. Neal, Michael J. Maloney, David A. Litton, Christopher Masucci
  • THERMAL BARRIER COATING FOR GAS TURBINE ENGINE COMPONENTS
    Publication number: 20140065408
    Abstract: A component for a gas turbine engine according to an exemplary embodiment of the present disclosure can include a substrate, a thermal barrier coating deposited on at least a portion of the substrate, and an outer layer deposited on at least a portion of the thermal barrier coating. The outer layer can include a material that is reactive with an environmental contaminant that comes into contact with the outer layer to alter a microstructure of the outer layer.
    Type: Application
    Filed: September 5, 2012
    Publication date: March 6, 2014
    Inventors: Christopher W. Strock, Michael Maloney, David A. Litton, Benjamin Joseph Zimmerman, Brian T. Hazel
  • Economic oxidation and fatigue resistant metallic coating
    Patent number: 8641963
    Abstract: The present disclosure relates to an improved low-cost metallic coating to be deposited on gas turbine engine components. The metallic coating consists of 1.0 to 18 wt % cobalt, 3.0 to 18 wt % chromium, 5.0 to 15 wt % aluminum, 0.01 to wt % yttrium, 0.01 to 0.6 wt % hafnium, 0.0 to 0.3 wt % silicon, 0.0 to 1.0 wt % zirconium, 0.0 to 10 wt % tantalum, 0.0 to 9.0 wt % tungsten, 0.0 to 10 wt % molybdenum, 0.0 to 43.0 wt % platinum, and the balance nickel.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: February 4, 2014
    Assignee: United Technologies Corporation
    Inventors: Brian S. Tryon, David A. Litton, Russell A. Beers
  • LOCALIZED TRANSITIONAL COATING OF TURBINE COMPONENTS
    Publication number: 20140030497
    Abstract: Different thermal barrier coatings are deposited on different regions of the surface of a component. A first thermal barrier coating comprising an erosion resistant yttria stabilized zirconia material is deposited on a first region of the surface of the component. A second thermal barrier coating comprising an oxidation and corrosion resistant gadolinia stabilized zirconia is deposited on a second region of the surface of the component.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 30, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian S. Tryon, David A. Litton
  • Multi-Material Thermal Barrier Coating System
    Publication number: 20130260119
    Abstract: The thermal barrier coating system comprises a matrix of a first chemistry with multiple embedded second phases of a second chemistry. The matrix comprises a stabilized zirconia. The second regions comprise at least 40 mole percent of oxides having the formula Ln2O3, where Ln is selected from the lanthanides La through Lu, Y, Sc, In, Ca, and Mg with the balance zirconia (ZrO2), hafnia (HfO2), titania (TiO2), or mixtures thereof. The second phases have a characteristic thickness (T6) of less than 2.0 micrometers (?m). The spacing between second phases has a characteristic thickness (T5) of less than 8.0 micrometers (?m).
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: David A. Litton, Brian S. Tryon
  • HYBRID THERMAL BARRIER COATING
    Publication number: 20130260132
    Abstract: A tubine engine component has a substrate, a thermal barrier layer deposited onto the substrate, and a sealing layer of ceramic material deposited on an outer surface of the thermal barrier layer for limiting molten sand penetration. The thermal barrier layer and sealing layer are formed by suspension plasma spraying. A preferred sealing layer is gadolinium zirconate.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 3, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian T. Hazel, David A. Litton, Michael J. Maloney
  • Thermal barrier coating application processes
    Patent number: 8529999
    Abstract: A process of coating an article includes the steps of (1) forming a layer of a ceramic based compound on an article; (2) providing a solution containing a metal as a particulate having a diameter of about 10 nanometers to about 1000 nanometers and present in an amount of about 25 percent to about 50 percent by volume of the solution; (3) contacting the ceramic based compound layer with the solution; (4) drying the article; and (5) optionally repeating steps (3) and (4).
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: September 10, 2013
    Assignee: United Technologies Corporation
    Inventors: Michael J. Maloney, David A. Litton, Kevin W. Schlichting, Melvin Freling, John G. Smeggil, David B. Snow
  • Spallation-Resistant Thermal Barrier Coating
    Publication number: 20130224453
    Abstract: In a method for coating a substrate, a ceramic first layer is suspension plasma sprayed and is at least about as tough as 7YSZ. A ceramic second layer is applied over the first layer and is less tough than the first layer.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Brian T. Hazel, Benjamin J. Zimmerman, David A. Litton