Patents by Inventor David Welch

David Welch 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).

  • Publication number: 20210232159
    Abstract: A rotorcraft includes an avionics control unit (ACU) and multiple power distribution units (PDUs) electrically connected to an electrical bus, wherein each PDU of the multiple PDUs is electrically connected to a respective multiple electrical loads, and wherein each PDU of the multiple PDUs is configured to receive commands from the ACU to couple or decouple one or more of its respectively connected multiple electrical loads from the electrical bus. The ACU is configured to send commands to the multiple PDUs to couple or decouple a first set of electrical loads and to couple or decouple a second set of electrical loads from the electrical bus, wherein the coupling or decoupling of the first set and the coupling or decoupling the second set is based on a first priority of the first set and a second priority of the second set, respectively.
    Type: Application
    Filed: January 26, 2021
    Publication date: July 29, 2021
    Inventors: Mark Berkley, David Fuessel, Steven Welch, David Meek
  • Patent number: 11073030
    Abstract: An airfoil assembly for a gas turbine engine according to an example of the present disclosure includes, among other things, an airfoil including an airfoil section extending from a root section. The airfoil section extends between a leading edge and a trailing edge in a chordwise direction and extending between a tip portion and the root section in a radial direction. The airfoil section defines a pressure side and a suction side separated in a circumferential direction. A root mount includes first and second mount members secured to circumferentially opposed sides of the root section. Arcuate circumferential faces of the first and second mount members are dimensioned to pivotably mount the root section to a hub in an installed position. A method of assembly is also disclosed.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: July 27, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Jason Husband, David A. Welch
  • Patent number: 10977969
    Abstract: The present invention relates to an interactive advertising system and method of using the system. A plurality of removable RFID devices are disposed on a panel which is separate from an advertising graphic that is supported in an illuminated frame. Activation of one of the RFID devices illuminates a portion of the advertising graphic.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: April 13, 2021
    Assignee: Avery Dennison Retail Information Services, LLC
    Inventors: Ian J. Forster, David A. Welch, Haochuan Wang
  • Patent number: 10977965
    Abstract: The present invention relates to an advertising system and method of using the same. The advertising system includes a light source which may be activated by near field communication devices in order to extract information from the system.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: April 13, 2021
    Assignee: Avery Dennison Retail Information Services, LLC
    Inventors: Ian J. Forster, David Welch, Haochuan Wang, Sriram Venkatasanthanam, Steven R. Chapman
  • Publication number: 20210078924
    Abstract: A process for the production of normal-butanol, iso-butanol and 2-alkyl alkanol is disclosed.
    Type: Application
    Filed: April 11, 2019
    Publication date: March 18, 2021
    Inventors: Fraser Archibald, Adrian Lord, Martin Smidt, David Welch
  • Patent number: 10730112
    Abstract: A fan blade includes a lattice structure, a fill, and a structural wrap. The lattice structure defines an airfoil body that has a cavity. The lattice structure defines at least one spar that extends radially from a root of the airfoil body towards a tip of the airfoil body. The fill is disposed within the cavity. The structural wrap is disposed about the lattice structure. The structural wrap defines a plurality of plies that extend from a leading edge of the airfoil body towards a trailing edge of the airfoil body.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: August 4, 2020
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: David A. Welch
  • Patent number: 10731661
    Abstract: A gas turbine engine comprises a fan rotor having fan blades received within an outer nacelle, and the outer nacelle having an inner surface. At least a portion of the nacelle inner surface extends radially inwardly to be radially inward of an outer diameter of the fan blades. The inner surface of the nacelle is formed with a trench, which extends into the inner surface to a radially outer extent that is spaced radially outward of the outer diameter of the fan blades.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 4, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Frederick M. Schwarz, David A. Welch
  • Publication number: 20200173286
    Abstract: A blade fabrication method is provided and includes additively manufacturing a core, securing the core to a mandrel, electroforming a leading edge sheath directly onto the core and the mandrel and removing the mandrel from the core and the leading edge sheath.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Inventor: David A. Welch
  • Patent number: 10669936
    Abstract: A cartridge for a fan case of a gas turbine engine includes an inlet acoustic liner section integrated with a thermally conforming liner section.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 2, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Thomas J. Robertson, Jr., Mark W. Costa, David A. Welch
  • Publication number: 20200123905
    Abstract: An airfoil for a gas turbine engine according to an example of the present disclosure includes, among other things, an airfoil section that extends from a root section. The airfoil section extends between a leading edge and a trailing edge in a chordwise direction and extends between a tip portion and the root section in a radial direction. The airfoil section defines a pressure side and a suction side separated in a thickness direction, and the airfoil section includes a metallic sheath that defines an internal cavity receiving a composite core. The root section defines at least one bore dimensioned to receive a retention pin. At least one damping element is received in the internal cavity and that selectively causes the airfoil section to stiffen.
    Type: Application
    Filed: October 18, 2018
    Publication date: April 23, 2020
    Inventors: Jason Husband, James Glaspey, David A. Welch
  • Patent number: 10562100
    Abstract: A fan blade includes a lattice structure, a fill, and a structural wrap. The lattice structure defines an airfoil body that has a cavity. The lattice structure defines at least one spar that extends radially from a root of the airfoil body towards a tip of the airfoil body. The fill is disposed within the cavity. The structural wrap is disposed about the lattice structure. The structural wrap defines a plurality of plies that extend from a leading edge of the airfoil body towards a trailing edge of the airfoil body.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: February 18, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: David A. Welch
  • Patent number: 10533497
    Abstract: A nacelle for a gas turbine engine, the nacelle includes an inlet axially forward of a fan section. The inlet includes an interior surface. A leading edge includes an inlet cavity. A first conduit communicates airflow to the inlet cavity for preventing accretion of ice on the leading edge. An inlet duct is open to the interior surface aft of the inlet cavity. A second conduit is in fluid communication with the first conduit and the inlet duct. The second conduit communicates airflow to the inlet duct for generating film heating airflow over the interior surface for preventing ice accretion. A gas turbine engine is also disclosed.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 14, 2020
    Assignee: United Technologies Corporation
    Inventor: David A. Welch
  • Patent number: 10316754
    Abstract: A heat exchanger manifold for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a manifold body extending between a first face and a second face, a first seal land defining a first fluid port extending through the manifold body between the first face and the second face, and a first seal received within the first fluid port.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 11, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: William Meyst, Andre Herman Troughton, Brian J. Breslin, Jesse Ian Berube, Christopher Durkee, David A. Welch
  • Patent number: 10208709
    Abstract: A gas turbine engine includes a fan forward of a primary flowpath inlet. The fan includes multiple fan blades distributed radially about, and connected to, a hub. A fan nacelle is positioned radially outward of the fan and includes an inner diameter. The inner diameter is sloped relative to an engine axis such that a forward portion of the fan nacelle has a smaller inner diameter than an aft portion of the fan nacelle. A fan blade spacer is disposed between a radially inward facing surface of at least one fan blade and a radially outward facing surface of the hub. The fan blade spacer has a radial thickness at least equal to a slope drop of the fan nacelle.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: February 19, 2019
    Assignee: United Technologies Corporation
    Inventor: David A. Welch
  • Publication number: 20180073519
    Abstract: An airfoil includes a leading edge, a trailing edge, a pressure side extending between the leading and the trailing edge, and a suction side that is disposed opposite the pressure side extending between the leading edge and the trailing edge. The airfoil further includes a spar and a structural member. The spar defines the leading edge. The structural member is bonded to the spar.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 15, 2018
    Inventor: David A. Welch
  • Publication number: 20180038385
    Abstract: A fan blade includes a lattice structure, a fill, and a structural wrap. The lattice structure defines an airfoil body that has a cavity. The lattice structure defines at least one spar that extends radially from a root of the airfoil body towards a tip of the airfoil body. The fill is disposed within the cavity. The structural wrap is disposed about the lattice structure. The structural wrap defines a plurality of plies that extend from a leading edge of the airfoil body towards a trailing edge of the airfoil body.
    Type: Application
    Filed: August 2, 2016
    Publication date: February 8, 2018
    Inventor: David A. Welch
  • Publication number: 20170327716
    Abstract: The invention relates to a process for the manufacture of polymer film graphics comprising providing a continuous substrate having a release layer thereon; applying an image layer in the shape of a graphic letter or design to the release layer; depositing an adhesive layer to the image layer and which has the same shape as the image layer graphic letter or design; curing the adhesive and image layers; and winding the polymer film graphics onto rolls. The invention further relates to a polymer film graphic comprising a substrate having an upper surface and a lower surface; a release layer overlying the upper surface of the substrate; an image layer in the shape of a graphic letter or design overlying the release layer; an adhesive layer overlying the image layer, the adhesive layer having the same shape as the image layer graphic letter or design.
    Type: Application
    Filed: June 29, 2017
    Publication date: November 16, 2017
    Inventors: James Bodwell, Michael W. Roughton, David WELCH
  • Publication number: 20170298821
    Abstract: A nacelle for a gas turbine engine, the nacelle includes an inlet axially forward of a fan section. The inlet includes an interior surface. A leading edge includes an inlet cavity. A first conduit communicates airflow to the inlet cavity for preventing accretion of ice on the leading edge. An inlet duct is open to the interior surface aft of the inlet cavity. A second conduit is in fluid communication with the first conduit and the inlet duct. The second conduit communicates airflow to the inlet duct for generating film heating airflow over the interior surface for preventing ice accretion. A gas turbine engine is also disclosed.
    Type: Application
    Filed: April 18, 2016
    Publication date: October 19, 2017
    Inventor: David A. Welch
  • Publication number: 20170284202
    Abstract: A gas turbine engine includes a fan forward of a primary flowpath inlet. The fan includes multiple fan blades distributed radially about, and connected to, a hub. A fan nacelle is positioned radially outward of the fan and includes an inner diameter. The inner diameter is sloped relative to an engine axis such that a forward portion of the fan nacelle has a smaller inner diameter than an aft portion of the fan nacelle. A fan blade spacer is disposed between a radially inward facing surface of at least one fan blade and a radially outward facing surface of the hub. The fan blade spacer has a radial thickness at least equal to a slope drop of the fan nacelle.
    Type: Application
    Filed: April 5, 2016
    Publication date: October 5, 2017
    Inventor: David A. Welch
  • Patent number: 9725624
    Abstract: The invention relates to a process for the manufacture of polymer film graphics comprising providing a continuous substrate having a release layer thereon; applying an image layer in the shape of a graphic letter or design to the release layer; depositing an adhesive layer to the image layer and which has the same shape as the image layer graphic letter or design; curing the adhesive and image layers; and winding the polymer film graphics onto rolls. The invention further relates to a polymer film graphic comprising a substrate having an upper surface and a lower surface; a release layer overlying the upper surface of the substrate; an image layer in the shape of a graphic letter or design overlying the release layer; an adhesive layer overlying the image layer, the adhesive layer having the same shape as the image layer graphic letter or design.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: August 8, 2017
    Assignee: Avery Dennison Corporation
    Inventors: James Bodwell, Michael W. Roughton, David Welch