Patents by Inventor Craig R. McGarrah
Craig R. McGarrah 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).
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Patent number: 12281597Abstract: A method of forming a vane assembly for a gas turbine engine includes the steps of 1) determining a re-stagger angle for an airfoil on a ceramic matrix composite (“CMC”) vane, 2) determine an adjusted position of a baffle to be inserted within a central chamber in the vane, inserting the baffle into a bathtub seal, and adjusting an upper face of the baffle to an orientation relative to a bathtub seal support face to account for the adjusted position of the baffle and 3) fixing the baffle upper face to the bathtub seal flange support face. A vane assembly and a gas turbine engine are also disclosed.Type: GrantFiled: August 21, 2023Date of Patent: April 22, 2025Assignee: RTX CorporationInventors: David J. Wasserman, Craig R. McGarrah
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Publication number: 20250067185Abstract: A method of forming a vane assembly for a gas turbine engine includes the steps of 1) determining a re-stagger angle for an airfoil on a ceramic matrix composite (“CMC”) vane, 2) determine an adjusted position of a baffle to be inserted within a central chamber in the vane, inserting the baffle into a bathtub seal, and adjusting an upper face of the baffle to an orientation relative to a bathtub seal support face to account for the adjusted position of the baffle and 3) fixing the baffle upper face to the bathtub seal flange support face. A vane assembly and a gas turbine engine are also disclosed.Type: ApplicationFiled: August 21, 2023Publication date: February 27, 2025Inventors: David J. Wasserman, Craig R. McGarrah
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Patent number: 11840930Abstract: A vane for a gas turbine engine, the vane including: an inner diameter platform and an outer diameter platform and an airfoil that extends between the inner diameter platform and the outer diameter platform, the airfoil having a leading edge, a trailing edge, a pressure side and a suction side, the inner diameter platform has a suction side mate face and a pressure side mate face, wherein the suction side mate face and the pressure side mate face of the inner diameter platform have an axial feather seal slot and a radial seal slot, the axial feather seal slot includes a leading edge portion that extends from the radial seal slot towards a leading edge of the inner diameter platform and a trailing edge portion that extends from the radial seal slot towards a trailing edge of the inner diameter platform, and a chamfer extends between the radial seal slot and the trailing edge portion of the axial feather seal slot.Type: GrantFiled: May 17, 2019Date of Patent: December 12, 2023Assignee: RTX CORPORATIONInventors: Tracy A. Propheter-Hinckley, Craig R. McGarrah, Kyle J. Brevick, Egon Salimusaj
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Patent number: 11015473Abstract: A blade outer air seal assembly includes a seal segment that has a base portion that extends between a first circumferential side and a second circumferential side and from a first axial side to a second axial side. A first wall is axially spaced from a second wall. The first and second walls extend from the base portion to an outer wall to define a circumferentially extending seal passage. A carrier has a platform. A portion of the platform is within the seal passage. A radially extending first hook protrudes from the platform and is configured to engage with a support structure.Type: GrantFiled: March 18, 2019Date of Patent: May 25, 2021Assignee: RAYTHEON TECHNOLOGIES CORPORATIONInventors: William M. Barker, Thomas E. Clark, Craig R. McGarrah, Daniel J. Whitney
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Publication number: 20200362715Abstract: A vane for a gas turbine engine, the vane including: an inner diameter platform and an outer diameter platform and an airfoil that extends between the inner diameter platform and the outer diameter platform, the airfoil having a leading edge, a trailing edge, a pressure side and a suction side, the inner diameter platform has a suction side mate face and a pressure side mate face, wherein the suction side mate face and the pressure side mate face of the inner diameter platform have an axial feather seal slot and a radial seal slot, the axial feather seal slot includes a leading edge portion that extends from the radial seal slot towards a leading edge of the inner diameter platform and a trailing edge portion that extends from the radial seal slot towards a trailing edge of the inner diameter platform, and a chamfer extends between the radial seal slot and the trailing edge portion of the axial feather seal slot.Type: ApplicationFiled: May 17, 2019Publication date: November 19, 2020Inventors: Tracy A. Propheter-Hinckley, Craig R. McGarrah, Kyle J. Brevick, Egon Salimusaj
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Publication number: 20200300108Abstract: A blade outer air seal assembly includes a seal segment that has a base portion that extends between a first circumferential side and a second circumferential side and from a first axial side to a second axial side. A first wall is axially spaced from a second wall. The first and second walls extend from the base portion to an outer wall to define a circumferentially extending seal passage. A carrier has a platform. A portion of the platform is within the seal passage. A radially extending first hook protrudes from the platform and is configured to engage with a support structure.Type: ApplicationFiled: March 18, 2019Publication date: September 24, 2020Inventors: William M. Barker, Thomas E. Clark, Craig R. McGarrah, Daniel J. Whitney
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Publication number: 20200300107Abstract: A blade outer air seal includes a base portion that extends between a first circumferential side and a second circumferential side and from a first axial side to a second axial side. A first wall is axially spaced from a second wall. The first and second walls extend from the base portion. An outer wall joins the first and second walls. The outer wall has a first edge and a second edge. Each of the edges have a first portion and a second portion arranged at a first angle relative to the first portion.Type: ApplicationFiled: March 18, 2019Publication date: September 24, 2020Inventors: William M. Barker, Thomas E. Clark, Craig R. McGarrah, Daniel J. Whitney
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Patent number: 10731493Abstract: A seal for sealing a radially outer component of a gas turbine engine stator to a radially inner component thereof includes an axially resilient seal carrier adapted for mounting the seal carrier and including at a radially inner portion thereof, a pair of radially spaced, axially extending, radially resilient jaws adapted to clamp a sealing element such as a rope seal there between in sealing engagement with a radially inner component of the engine stator.Type: GrantFiled: April 10, 2014Date of Patent: August 4, 2020Assignee: Ratheyon Technologies CorporationInventors: Timothy M. Davis, Mark J. Rogers, Mark Broomer, Craig R. McGarrah, Carson A. Roy Thill
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Patent number: 10641129Abstract: A component for a gas turbine engine is disclosed. The component includes a platform and a rail having an outer radial surface and an inner radial surface, with the inner radial surface connected to the platform. The rail includes a plurality of apertures spaced circumferentially between the outer radial surface and the inner radial surface, the apertures disposed to form a truss-like structure.Type: GrantFiled: November 8, 2017Date of Patent: May 5, 2020Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Brandon W. Spangler, Jose R. Paulino, Craig R. McGarrah, Edward R. Bareiss, Edwin Otero
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Publication number: 20190136716Abstract: A component for a gas turbine engine is disclosed. The component includes a platform and a rail having an outer radial surface and an inner radial surface, with the inner radial surface connected to the platform. The rail includes a plurality of apertures spaced circumferentially between the outer radial surface and the inner radial surface, the apertures disposed to form a truss-like structure.Type: ApplicationFiled: November 8, 2017Publication date: May 9, 2019Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: BRANDON W. SPANGLER, JOSE R. PAULINO, CRAIG R. McGARRAH, EDWARD R. BAREISS, EDWIN OTERO
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Patent number: 10145308Abstract: A seal assembly for a gas turbine engine includes an engine static structure. First and second members fluidly separate cavities from one another. A seal assembly is captured by the engine structure. The seal assembly includes a carrier and a seal that engages the first member. The second member is captured by the carrier.Type: GrantFiled: February 2, 2015Date of Patent: December 4, 2018Assignee: United Technologies CorporationInventors: Carson A. Roy Thill, Mark Broomer, Timothy M. Davis, Craig R. McGarrah, Mark J. Rogers, Russell E. Keene, Anthony B. Swift
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Publication number: 20180328228Abstract: A vane assembly includes an outer platform, an inner platform, and a vane. The inner platform has an inner flange that includes a first face, a second face disposed opposite the first face, a third face extending from the first face towards the second face, and a fourth face extending from the third face towards a tip of the inner flange. The third face and the fourth face at least partially define a first notch.Type: ApplicationFiled: March 13, 2018Publication date: November 15, 2018Inventors: Joseph F. Englehart, Craig R. McGarrah
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Patent number: 10087771Abstract: A seal assembly is positioned within a cavity that extends circumferentially about an axial centerline of a gas turbine engine. The cavity includes a cavity wall. The seal assembly includes a seal and a seal protector. The seal extends circumferentially within the cavity. The seal protector extends circumferentially within the cavity. The seal protector is positioned between the seal and the cavity wall. The seal protector includes a locating feature that is operative to contact the seal to aid in axially positioning the seal protector relative to the seal.Type: GrantFiled: February 20, 2014Date of Patent: October 2, 2018Assignee: United Technologies CorporationInventor: Craig R. Mcgarrah
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Patent number: 9879558Abstract: An interface within a gas turbine engine includes a multiple of segmented components, each with a segment flange with a multiple of apertures, at least one of the multiple of apertures a first slot aperture. A full ring component with a ring flange that defines a multiple ring of apertures, at least one of the multiple of ring apertures a second slot aperture, the second slot aperture transverse to the first slot aperture.Type: GrantFiled: February 5, 2014Date of Patent: January 30, 2018Assignee: United Technologies CorporationInventors: Mark J Rogers, Mark Broomer, Craig R. McGarrah, Timothy M Davis, Anthony B Swift, Russell E Keene, Carson A. Roy Thill, Timothy A. Dunbar
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Patent number: 9670791Abstract: An assembly for a turbine engine includes a turbine engine first component, a turbine engine second component and a flexible seal that is attached to the first component. The flexible seal at least partially seals a gap between the first component and the second component. The flexible seal includes a mount and a finger seal that sealingly engages the second component. The mount includes a boss that sealingly engages the first component.Type: GrantFiled: March 4, 2014Date of Patent: June 6, 2017Assignee: United Technologies CorporationInventors: Mark Broomer, Carson A. Roy Thill, Timothy M. Davis, Anthony P. Cherolis, Robert L. Hazzard, Craig R. McGarrah, Conway Choung, Russell E. Keene
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Publication number: 20160061047Abstract: A seal for sealing a radially outer component of a gas turbine engine stator to a radially inner component thereof includes an axially resilient seal carrier adapted for mounting the seal carrier and including at a radially inner portion thereof, a pair of radially spaced, axially extending, radially resilient jaws adapted to clamp a sealing element such as a rope seal there between in sealing engagement with a radially inner component of the engine stator.Type: ApplicationFiled: April 10, 2014Publication date: March 3, 2016Inventors: Timothy M. Davis, Mark J. Rogers, Mark Broomer, Craig R. McGarrah, Carson A. Roy Thill
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Publication number: 20160010482Abstract: An interface within a gas turbine engine includes a multiple of segmented components, each with a segment flange with a multiple of apertures, at least one of the multiple of apertures a first slot aperture. A full ring component with a ring flange that defines a multiple ring of apertures, at least one of the multiple of ring apertures a second slot aperture, the second slot aperture transverse to the first slot aperture.Type: ApplicationFiled: February 5, 2014Publication date: January 14, 2016Inventors: Mark J Rogers, Mark Broomer, Craig R McGarrah, Timothy M Davis, Anthony B Swift, Russell E Keene, Carson A. Roy Thill, Timothy A. Dunbar
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Publication number: 20160003081Abstract: An assembly for a turbine engine includes a turbine engine first component, a turbine engine second component and a flexible seal that is attached to the first component. The flexible seal at least partially seals a gap between the first component and the second component. The flexible seal includes a mount and a finger seal that sealingly engages the second component. The mount includes a boss that sealingly engages the first component.Type: ApplicationFiled: March 4, 2014Publication date: January 7, 2016Inventors: Mark Broomer, Carson A. Roy Thill, Timothy M. Davis, Anthony P. Cherolis, Robert L. Hazzard, Craig R. McGarrah, Conway Choung, Russell E. Keene
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Publication number: 20160003080Abstract: A seal assembly is positioned within a cavity that extends circumferentially about an axial centerline of a gas turbine engine. The cavity includes a cavity wall. The seal assembly includes a seal and a seal protector. The seal extends circumferentially within the cavity. The seal protector extends circumferentially within the cavity. The seal protector is positioned between the seal and the cavity wall. The seal protector includes a locating feature that is operative to contact the seal to aid in axially positioning the seal protector relative to the seal.Type: ApplicationFiled: February 20, 2014Publication date: January 7, 2016Applicant: United Technologies CorporationInventor: Craig R. Mcgarrah
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Publication number: 20150226132Abstract: A seal assembly for a gas turbine engine includes an engine static structure. First and second members fluidly separate cavities from one another. A seal assembly is captured by the engine structure. The seal assembly includes a carrier and a seal that engages the first member. The second member is captured by the carrier.Type: ApplicationFiled: February 2, 2015Publication date: August 13, 2015Inventors: Carson A. Roy Thill, Mark Broomer, Timothy M. Davis, Craig R. McGarrah, Mark J. Rogers, Russell E. Keene, Anthony B. Swift