Patents by Inventor Michael G. McCaffrey

Michael G. McCaffrey 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).

  • Boas segmented heat shield
    Patent number: 10738643
    Abstract: A seal assembly includes a seal arc segment defining first and second seal supports with a carriage defining first and second support members. The first support member supports the seal arc segment in a first ramped interface, and the second support member supports the seal arc segment in a second ramped interface. A spring is configured to bias the seal arc segment axially. A heat shield is radially inward of the spring.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: August 11, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Michael G. McCaffrey, Benjamin F. Hagan, David Richard Griffin
  • Blade outer air seal mount
    Patent number: 10731498
    Abstract: The present disclosure relates generally to blade outer air seal section mount including a resilient spring element that acts to provide re-centering forces to the blade outer air seal section when non-uniform forces applied to the blade outer air seal section causing it to move away from its nominal position.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: August 4, 2020
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey
  • Continuation of a shear tube through a vane platform for structural support
    Patent number: 10724387
    Abstract: A stator vane may comprise an airfoil extending between a first platform and a second platform, a first shear tube may extend through the airfoil and relatively orthogonal to the first platform and the second platform, wherein the first shear tube extends through the first platform and the second platform. In various embodiments, a second shear tube may extend through the airfoil into the first platform and the second platform parallel the first shear tube.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 28, 2020
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Bryan H. Farrar, Howard J. Liles, Michael G McCaffrey, Andrew J. Lazur
  • BOAS ASSEMBLIES WITH AXIAL SUPPORT PINS
    Publication number: 20200224544
    Abstract: A blade outer air seal assembly may comprise a blade outer air seal segment and a blade outer air seal support coupled to the blade outer air seal segment. The blade outer air seal segment may comprise a forward rail and an aft rail. The forward rail may be castellated. The blade outer air seal support may comprise an aft flange and a first forward flange. A pin may be disposed through the aft rail, the aft flange, the first forward flange, and the forward rail.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 16, 2020
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: William M. Barker, Daniel J. Whitney, Michael G. McCaffrey, Thomas E. Clark
  • Vented tangential on-board injector for a gas turbine engine
    Patent number: 10697321
    Abstract: An on-board injector that delivers discharge air toward a turbine rotor of a gas turbine engine includes a second wall spaced form a first wall to define an annular inlet about an engine longitudinal axis and a multiple of airfoil shapes between the first wall and the second wall to segregate discharge air from the annular inlet, and a multiple of bypass apertures each along a radial axis transverse to the engine longitudinal axis through each of the multiple of airfoil shapes and the respective first wall, the second wall.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: June 30, 2020
    Assignee: Raytheon Technologies Corporation
    Inventor: Michael G. McCaffrey
  • Airfoil with ceramic airfoil piece having internal cooling circuit
    Patent number: 10677079
    Abstract: An airfoil includes an airfoil section that has radially inner and outer ends and defines an airfoil profile. The airfoil profile has a leading end, a trailing end, a suction side, and a pressure side. The airfoil section includes a ceramic airfoil piece that defines a portion of the airfoil profile. The ceramic airfoil piece includes an exterior wall that has an internal cooling circuit.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: June 9, 2020
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Tracy A. Propheter-Hinckley, Michael G. McCaffrey, Raymond Surace, Matthew A. Devore
  • HYDROSTATIC SEAL WITH NON-PARALLEL BEAMS FOR ANTI-TIPPING
    Publication number: 20200165931
    Abstract: A hydrostatic advanced low leakage seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a shoe extending circumferentially. The seal further includes a radially outer beam operatively coupling the shoe to the base. The seal yet further includes a radially inner beam operatively coupling the shoe to the base, wherein one of the radially inner beam and the radially outer beam is oriented to be angled relative to the other of the radially inner and outer beam.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 28, 2020
    Inventor: Michael G. McCaffrey
  • MULTI-COMPONENT ASSEMBLED HYDROSTATIC SEAL
    Publication number: 20200165929
    Abstract: A method of manufacturing a hydrostatic advanced low leakage seal configured to be disposed between relatively rotatable components is provided. The method includes manufacturing a plurality of separate, independent components of the seal. The method also includes assembling the plurality of separate, independent components to form the seal.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 28, 2020
    Inventors: Michael G. McCaffrey, Scott D. Virkler
  • HYDROSTATIC SEAL WITH ASYMMETRIC BEAMS FOR ANTI-TIPPING
    Publication number: 20200165930
    Abstract: A hydrostatic advanced low leakage seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a shoe extending circumferentially. The seal further includes a first beam operatively coupling the shoe to the base, the first beam having a first thickness. The seal yet further includes a second beam operatively coupling the shoe to the base, the second beam having at least a portion thereof with a second thickness that is less than the first thickness.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 28, 2020
    Inventors: Michael G. McCaffrey, Scott D. Virkler
  • HYDROSTATIC SEAL WITH INCREASED DESIGN SPACE
    Publication number: 20200165928
    Abstract: A hydrostatic advanced low leakage seal configured to be disposed relatively rotatable components includes a base. The seal also includes a shoe extending circumferentially. The seal further includes a beam operatively coupling the shoe to the base, the beam having a beam length that is substantially equal to or greater than a circumferential pitch of the shoe.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 28, 2020
    Inventors: Michael G. McCaffrey, Scott D. Virkler
  • AIR SEAL INTERFACE WITH AFT ENGAGEMENT FEATURES AND ACTIVE CLEARANCE CONTROL FOR A GAS TURBINE ENGINE
    Publication number: 20200158023
    Abstract: An interface for a gas turbine engine. The interface includes a full-hoop vane ring around the engine axis, the full-hoop vane ring comprises a forward vane rail with a vane ring forward contact surface and a vane ring anti-rotation tab, the vane ring anti-rotation tab engaged with the anti-rotation case slot; and a multiple of BOAS segments around the engine axis, each of the multiple of BOAS segments comprise a BOAS aft engagement feature and a BOAS aft contact surface, the BOAS aft engagement feature engaged with the outer case and the anti-rotation case slot, the BOAS aft contact surface abuts the vane ring forward contact surface.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 21, 2020
    Applicant: United Technologies Corporation
    Inventor: Michael G. McCaffrey
  • AIR SEAL INTERFACE WITH FORWARD ENGAGEMENT FEATURES AND ACTIVE CLEARANCE CONTROL FOR A GAS TURBINE ENGINE
    Publication number: 20200158022
    Abstract: An interface assembly for a gas turbine engine. The interface a full-hoop vane ring around the engine axis, the full-hoop vane ring comprises an aft vane rail with a vane ring contact surface, the aft vane rail engaged with the anti-rotation case slot at a vane ring anti-rotation tab; and a multiple of BOAS segments around the engine axis, each of the multiple of BOAS segments comprise a BOAS forward engagement feature and a BOAS contact surface, the BOAS forward engagement feature engaged with the outer case, the BOAS contact surface abuts the vane ring contact surface.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 21, 2020
    Applicant: United Technologies Corporation
    Inventor: Michael G. McCaffrey
  • BLADE OUTER AIR SEAL WITH NON-LINEAR RESPONSE
    Publication number: 20200149417
    Abstract: A blade outer air seal (BOAS) for a gas turbine engine includes a seal ring body having a radially inner face and a radially outer face that axially extend between a leading edge portion and a trailing edge portion and a segmented spline that extends from the radially outer face of the seal ring body, the seal secured to the radially inner face of the seal ring body
    Type: Application
    Filed: November 13, 2018
    Publication date: May 14, 2020
    Applicant: United Technologies Corporation
    Inventor: Michael G. McCaffrey
  • CONTINUATION OF A SHEAR TUBE THROUGH A VANE PLATFORM FOR STRUCTURAL SUPPORT
    Publication number: 20200149423
    Abstract: A stator vane may comprise an airfoil extending between a first platform and a second platform, a first shear tube may extend through the airfoil and relatively orthogonal to the first platform and the second platform, wherein the first shear tube extends through the first platform and the second platform. In various embodiments, a second shear tube may extend through the airfoil into the first platform and the second platform parallel the first shear tube.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 14, 2020
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Bryan H. Farrar, Howard J. Liles, Michael G. McCaffrey, Andrew J. Lazur
  • RETENTION CLIP FOR A BLADE OUTER AIR SEAL
    Publication number: 20200149425
    Abstract: One exemplary embodiment of this disclosure relates to a system having a static segment with a circumferentially extending slot. The system further includes a retention clip partially received in the slot, and partially contacting a circumferential end of the static segment.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 14, 2020
    Inventor: Michael G. McCaffrey
  • Gas turbine engine ceramic component assembly and bonding material
    Patent number: 10648668
    Abstract: A gas turbine engine component assembly includes a ceramic component having a first thermal characteristic. A metallic component has a second thermal characteristic. A bonding material secures the ceramic component to the metallic component. The bonding material includes at least one of a transient liquid phase bond and a partial transient liquid phase bond. The bonding material is configured to withstand a shear stress parameter relating to a differential between the first and second thermal characteristics.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 12, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Grant O. Cook, III, Michael G. Abbott, Michael G. McCaffrey
  • Gas turbine engine active clearance control system using inlet particle separator
    Patent number: 10612466
    Abstract: A turbine section for a gas turbine engine includes blade outer air seals and stator vanes that provide a core flow path. A turbine case supports blade outer air seals and stator vanes. An annular cavity is provided between an interior surface of the turbine case and the blade outer air seals and the stator vanes. A hole extends through the turbine case from an exterior surface to the interior surface. The annular cavity extends axially to an exit. A manifold circumscribes the exterior surface of the turbine case and provides an annular space therebetween. The annular space is in fluid communication with the exit of the annular cavity via the hole.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 7, 2020
    Assignee: United Technologies Corporation
    Inventors: Jonathan Jeffery Eastwood, Joseph F. Englehart, Graham Ryan Philbrick, Henry K. Webster, Richard Seleski, ChaiDee Woods Brown, Michael G. McCaffrey
  • Support straps and method of assembly for gas turbine engine
    Patent number: 10598046
    Abstract: A method of assembling a portion of a gas turbine engine, includes assembling a plurality of static structure rings; attaching a plurality of support straps to an outer diameter of the plurality of static structure rings to form a cartridge; inserting the cartridge at least partially into an outer case assembly along an engine axis.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: March 24, 2020
    Assignee: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Scott D. Virkler
  • Engine component having support with intermediate layer
    Patent number: 10590780
    Abstract: Disclosed is a gas turbine engine component, and a method for forming the component. The component includes a first portion, a second portion formed separately from the first portion, and an intermediate layer provided between the first portion and the second portion.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: March 17, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey
  • BOAS ENHANCED HEAT TRANSFER SURFACE
    Publication number: 20200080439
    Abstract: A seal assembly includes a seal arc segment that defines first and second seal supports and radially inner and outer sides with the radially outer side including radially-extending sidewalls and a radially inner surface that joins the radially-extending sidewalls. The radially-extending sidewalls and the radially inner surface define a pocket. The seal assembly includes a carriage that defines first and second support members with the first support member supporting the seal arc segment in a first ramped interface and the second support member supporting the seal arc segment in a second ramped interface. The radially inner surface has a higher surface roughness than the radially extending sidewalls.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Inventor: Michael G. McCaffrey