Patents by Inventor David A. Knaul

David A. Knaul 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: 20240125237
    Abstract: An integrally bladed rotor for a gas turbine engine, including: a plurality of blades integrally formed with a hub as a single component, each of the plurality of blades having a blade body extending from the hub to an opposing blade tip surface along a longitudinal axis, each blade body having a pressure side and a suction side each extending between a leading edge and a trailing edge of the blade body; and each of the plurality of blades including a leading edge shield secured to the leading edge of the blade body.
    Type: Application
    Filed: October 17, 2022
    Publication date: April 18, 2024
    Inventor: David A. Knaul
  • Patent number: 11339720
    Abstract: Disclosed is an acoustic liner for a gas turbine engine, having: a face sheet; a first plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the first plurality of resonator chamber cavities defining a first aggregated volume that is configured to target noise attenuation at a first frequency, the first plurality of resonator chamber cavities include first and second resonator chamber cavities fluidly coupled to each other, which have different configurations with respect to each other; and a second plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the second plurality of resonator chamber cavities define a second aggregated volume that differs from the first aggregated volume and is configured to target noise attenuation at a second frequency, the second plurality of resonator chamber cavities include third and fourth resonator chamber cavities fluidly coupled to each other, which have different configurations with respect to each
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: May 24, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Daniel K. Van Ness, Anthony R. Bifulco, David A. Topol, David A. Knaul, Michael Raymond LaFavor
  • Patent number: 11268388
    Abstract: A component of a rotor system is provided and includes a disk and a reinforcing ring. The disk includes an airfoil element, a web extending radially inwardly from the airfoil element and an arm element extending axially from the web. The reinforcing ring is formed of fiber reinforced materials and is disposed to fit about the arm element.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: March 8, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: David A. Knaul, Seung-Woo Choi, Michael Raymond LaFavor, Anthony R. Bifulco
  • Publication number: 20210324748
    Abstract: A component of a rotor system is provided and includes a disk and a reinforcing ring. The disk includes an airfoil element, a web extending radially inwardly from the airfoil element and an arm element extending axially from the web. The reinforcing ring is formed of fiber reinforced materials and is disposed to fit about the arm element.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 21, 2021
    Inventors: David A. Knaul, Seung-Woo Choi, Michael Raymond LaFavor, Anthony R. Bifulco
  • Publication number: 20210277829
    Abstract: Disclosed is an acoustic liner for a gas turbine engine, having: a face sheet; a first plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the first plurality of resonator chamber cavities defining a first aggregated volume that is configured to target noise attenuation at a first frequency, the first plurality of resonator chamber cavities include first and second resonator chamber cavities fluidly coupled to each other, which have different configurations with respect to each other; and a second plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the second plurality of resonator chamber cavities define a second aggregated volume that differs from the first aggregated volume and is configured to target noise attenuation at a second frequency, the second plurality of resonator chamber cavities include third and fourth resonator chamber cavities fluidly coupled to each other, which have different configurations with respect to each
    Type: Application
    Filed: April 30, 2020
    Publication date: September 9, 2021
    Inventors: Daniel K. Van Ness, Anthony R. Bifulco, David A. Topol, David A. Knaul, Michael Raymond LaFavor
  • Patent number: 10294805
    Abstract: An integrally bladed rotor includes a rotor that has a rim that provides an inner flow surface. Circumferentially spaced apart radially extending airfoils integrally with and from the rotor and joined by an airfoil fillet. An asymmetrical trench is provided in the rim between adjacent airfoils.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: May 21, 2019
    Assignee: United Technologies Corporation
    Inventors: Christopher L. Potter, David A. Knaul, Michael Espinoza
  • Publication number: 20160319835
    Abstract: An integrally bladed rotor includes a rotor that has a rim that provides an inner flow surface. Circumferentially spaced apart radially extending airfoils integrally with and from the rotor and joined by an airfoil fillet. An asymmetrical trench is provided in the rim between adjacent airfoils.
    Type: Application
    Filed: December 10, 2014
    Publication date: November 3, 2016
    Inventors: Christopher L. POTTER, David A. KNAUL, Michael ESPINOZA
  • Patent number: 8727702
    Abstract: A mount interface between two rotating gas turbine engine components includes a rigid ring to provide radial deflection restraint. In one example, the rigid ring is comprised of a metal matrix composite material.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: May 20, 2014
    Assignee: United Technologies Corporation
    Inventors: Scott J. Augustine, David A. Knaul
  • Publication number: 20130259659
    Abstract: A seal for a gas turbine engine and a gas turbine engine employing such a seal are disclosed. More specifically, the engine includes a knife edge seal which is better able to withstand the extremely high temperatures and mechanical loads to which gas turbine engine components are increasingly subjected. By moving the knife edge seal to the aft hub and cantilevering its angle off of vertical, thermal and mechanical loads are balanced and thus thermal mechanical fatigue life is improved while low cycle fatigue is maintained.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Applicant: Pratt & Whitney
    Inventors: David A. Knaul, Fadi S. Maalouf, Nicholas Aiello, Orenthral T. Morgan, Raji Mali
  • Publication number: 20090297350
    Abstract: A mount interface between two rotating gas turbine engine components includes a rigid ring to provide radial deflection restraint. In one example, the rigid ring is comprised of a metal matrix composite material.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Inventors: Scott J. Augustine, David A. Knaul