Turbine airfoil to shroud attachment method

Campbell, Christian X; Kulkarni, Anand A; James, Allister W; Wessell, Brian J; Gear, Paul J

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Turbine airfoil to shroud attachment method

Abstract

Bi-casting a platform (50) onto an end portion (42) of a turbine airfoil (31) after forming a coating of a fugitive material (56) on the end portion. After bi-casting the platform, the coating is dissolved and removed to relieve differential thermal shrinkage stress between the airfoil and platform. The thickness of the coating is varied around the end portion in proportion to varying amounts of local differential process shrinkage. The coating may be sprayed (76A, 76B) onto the end portion in opposite directions parallel to a chord line (41) of the airfoil or parallel to a mid-platform length (80) of the platform to form respective layers tapering in thickness from the leading (32) and trailing (34) edges along the suction side (36) of the airfoil.

Inventors:: Campbell, Christian X; Kulkarni, Anand A; James, Allister W; Wessell, Brian J; Gear, Paul J

Issue Date:: Tue Dec 23 00:00:00 EST 2014

Research Org.:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1166020

Patent Number(s):: 8914976

Application Number:: 13/195,959

Assignee:: Siemens Energy, Inc. (Orlando, FL)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING

B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS

Show more

B - PERFORMING OPERATIONS B22 - CASTING B22C - FOUNDRY MOULDING
B22C9/10 - Cores

B - PERFORMING OPERATIONS B22 - CASTING B22D - CASTING OF METALS
B22D19/00 - Casting in, on, or around objects which form part of the product
B22D19/0081 - {pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal}
B22D29/001 - {Removing cores}

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D11/005 - {Sealing means between non relatively rotating elements}
F01D9/044 - {permanently, e.g. by welding, brazing, casting or the like}

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
F05B2230/21 - by casting
F05B2240/80 - Platforms for stationary or moving blades

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F05D2230/21 - by casting
F05D2240/80 - Platforms for stationary or moving blades

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/49321 - Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
Y10T29/4981 - Utilizing transitory attached element or associated separate material
Y10T29/49826 - Assembling or joining
Y10T29/49982 - Coating
Y10T29/49984 - and casting

Show less

DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Resource Relation:: Patent File Date: 2011 Aug 02

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 17 WIND ENERGY

Citation Formats


                    Campbell, Christian X, Kulkarni, Anand A, James, Allister W, Wessell, Brian J, and Gear, Paul J. Turbine airfoil to shroud attachment method.  United States: N. p., 2014. 
        Web.

Copy to clipboard


                    Campbell, Christian X, Kulkarni, Anand A, James, Allister W, Wessell, Brian J, & Gear, Paul J. Turbine airfoil to shroud attachment method.  United States.

Copy to clipboard


                    Campbell, Christian X, Kulkarni, Anand A, James, Allister W, Wessell, Brian J, and Gear, Paul J. Tue .  
        "Turbine airfoil to shroud attachment method".  United States.  https://www.osti.gov/servlets/purl/1166020.

Copy to clipboard


                    
@article{osti_1166020,

  title        = {Turbine airfoil to shroud attachment method},

  author       = {Campbell, Christian X and Kulkarni, Anand A and James, Allister W and Wessell, Brian J and Gear, Paul J},

  abstractNote = {Bi-casting a platform (50) onto an end portion (42) of a turbine airfoil (31) after forming a coating of a fugitive material (56) on the end portion. After bi-casting the platform, the coating is dissolved and removed to relieve differential thermal shrinkage stress between the airfoil and platform. The thickness of the coating is varied around the end portion in proportion to varying amounts of local differential process shrinkage. The coating may be sprayed (76A, 76B) onto the end portion in opposite directions parallel to a chord line (41) of the airfoil or parallel to a mid-platform length (80) of the platform to form respective layers tapering in thickness from the leading (32) and trailing (34) edges along the suction side (36) of the airfoil.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Dec 23 00:00:00 EST 2014},

  month        = {Tue Dec 23 00:00:00 EST 2014}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Method for improving metallurgical bond in bimetallic castings
patent, February 1977

Vishnevsky, Constantine; Graham, Lawrence D.
US Patent Document 4,008,052
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4008052

Method of forming metal article having plurality of airfoils extending outwardly from a hub
patent, April 1980

Blazek, William S.
US Patent Document 4,195,683
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4195683

Compliant interface for ceramic turbine blades
patent, November 1983

Cain, Edwin F. C.; McFarlen, William T.
US Patent Document 4,417,854
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4417854

Process for the production of gas turbine engine rotors and stators
patent, December 1984

Hall, II, Robert T.
US Patent Document 4,489,469
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4489469

Method of manufacturing a turbine rotor
patent, January 1985

Cruzen, Gerald S.; Izadi, Said; Nagy, Peter B.
US Patent Document 4,494,287
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4494287

Method of manufacturing an integral bladed turbine disk
patent, September 1985

Egan, Michael J.; Quill, Gary J.
US Patent Document 4,538,331
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4538331

Method for manufacturing a multiple property integral turbine wheel
patent, June 1986

Egan, Michael J.; Quill, Gary J.
US Patent Document 4,592,120
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4592120

Turbine engine component and method of making the same
patent, March 1988

Blazek, William S.; Hasch, Jerry L.
US Patent Document 4,728,258
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4728258

Composite gas turbine blade and method of manufacturing same
patent, September 1989

Verpoort, Clemens Maria
US Patent Document 4,869,645
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4869645

Method of making a turbine engine component
patent, September 1990

Blazek, William S.
US Patent Document 4,955,423
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4955423

Method of making an improved turbine engine component
patent, October 1990

Blazek, William S.
US Patent Document 4,961,459
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4961459

Method of making a turbine engine component
patent, January 1991

Parks, Paul
US Patent Document 4,987,944
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4987944

Method of making a turbine engine component
patent, December 1991

Blazek, William S.
US Patent Document 5,069,265
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5069265

Method of making a turbine engine component
patent, January 1993

Blazek, William S.; Wheaton, Harold L.
US Patent Document 5,181,550
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5181550

Method of making a composite casting
patent, September 1993

Colvin, Gregory N.
US Patent Document 5,241,737
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5241737

Method of making a composite casting
patent, September 1993

Colvin, Gregory N.
US Patent Document 5,241,738
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5241738

Method of making a composite casting
patent, November 1993

Colvin, Gregory N.
US Patent Document 5,263,530
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5263530

Bicast vane and shroud rings
patent, March 1994

Kington, Harry Lester; Pringnitz, Steven J.
US Patent Document 5,290,143
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5290143

Composite casting method
patent, July 1994

Colvin, Gregory N.
US Patent Document 5,332,022
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5332022

Stator vane having reinforced braze joint
patent, July 1994

Correia, Victor Hugo Silva; McAllister, Kevin G.
US Patent Document 5,332,360
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5332360

Process for obtaining bimaterial parts by casting an alloy around an insert coated with a metal film
patent, January 1995

Jarry, Philippe
US Patent Document 5,377,742
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5377742

Plasma spray nozzle with low overspray and collimated flow
patent, November 1996

Beason, George; McKechnie, Timothy N.; Power, Christopher
US Patent Document 5,573,682
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5573682

Method of making composite castings using reinforcement insert cladding
patent, October 1997

Colvin, Gregory N.; Veeck, Stewart J.; Larsen, Jr., Donald E.
US Patent Document 5,678,298
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5678298

Gas turbine engine vane and method of manufacture
patent, August 1998

Rhodes, Jeffrey F.
US Patent Document 5,797,725
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5797725

Method of making composite castings using reinforcement insert cladding
patent, November 1999

Colvin, Gregory N.; Veeck, Stewart J.; Larsen, Jr., Donald E.
US Patent Document 5,981,083
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5981083

Low stress connection methodology for thermally incompatible materials
patent, June 2002

Chen, E-June; Schenk, Bjoern; Bapat, Ramesh
US Patent Document 6,409,473
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6409473

Ceramic matrix composite turbine vane
patent, November 2003

Widrig, Scott M.; Morrison, Jay A.; Albrecht, Harry A.
US Patent Document 6,648,597
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6648597

Metal casting fabrication method
patent, May 2006

Ishiduka, Masanobu; Nishii, Kouta; Aso, Noriyasu
US Patent Document 7,045,220
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7045220

Method for manufacturing cast components
patent, October 2007

Liimatainen, Jari
US Patent Document 7,284,590
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7284590

Bi-cast blade ring for multi-alloy turbine rotor
patent-application, October 2006

Rice, Derek A.; Baker, William C.; Perron, James S.
US Patent Application 11/111530; 20060239825
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060239825

Metal injection joining
patent-application, August 2009

James, Allister
US Patent Application 12/024326; 20090196761
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20090196761

Turbine Airfoil to Shroud Attachment
patent-application, October 2011

Campbell, Christian X.; Morrison, Jay. A.; James, Allister W.
US Patent Application 12/752460; 20110243724
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110243724

Similar Records in DOE Patents and OSTI.GOV collections:

Turbine airfoil to shround attachment

Patent Campbell, Christian X; Morrison, Jay A; James, Allister W; ...

A turbine airfoil (31) with an end portion (42) that tapers (44) toward the end (43) of the airfoil. A ridge (46) extends around the end portion. It has proximal (66) and distal (67) sides. A shroud platform (50) is bi-cast onto the end portion around the ridge without bonding. Cooling shrinks the platform into compression (62) on the end portion (42) of the airfoil. Gaps between the airfoil and platform are formed using a fugitive material (56) in the bi-casting stage. These gaps are designed in combination with the taper angle (44) to accommodate differential thermal expansion while maintainingmore » « less
Full Text Available
Closed circuit steam cooled turbine shroud and method for steam cooling turbine shroud

Patent Burdgick, Steven Sebastian [Schenectady, NY]; Sexton, Brendan Francis [Simpsonville, SC]; Kellock, Iain Robertson [Simpsonville, SC]

A turbine shroud cooling cavity is partitioned to define a plurality of cooling chambers for sequentially receiving cooling steam and impingement cooling of the radially inner wall of the shoud. An impingement baffle is provided in each cooling chamber for receiving the cooling media from a cooling media inlet in the case of the first chamber or from the immediately upstream chamber in the case of the second through fourth chambers and includes a plurality of impingement holes for effecting the impingement cooling of the shroud inner wall.
Full Text Available
Airfoil nozzle and shroud assembly

Patent Shaffer, James E [Maitland, FL]; Norton, Paul F [San Diego, CA]

An airfoil and nozzle assembly including an outer shroud having a plurality of vane members attached to an inner surface and having a cantilevered end. The assembly further includes a inner shroud being formed by a plurality of segments. Each of the segments having a first end and a second end and having a recess positioned in each of the ends. The cantilevered end of the vane member being positioned in the recess. The airfoil and nozzle assembly being made from a material having a lower rate of thermal expansion than that of the components to which the airfoil andmore » nozzle assembly is attached. « less
Full Text Available
Method of making an apparatus for transpiration cooling of substrates such as turbine airfoils

Patent Alvin, Mary Anne; Anderson, Iver; Heidlof, Andy; ...

A method and apparatus for generating transpiration cooling using an oxidized porous HTA layer metallurgically bonded to a substrate having micro-channel architectures. The method and apparatus generates a porous HTA layer by spreading generally spherical HTA powder particles on a substrate, partially sintering under O.sub.2 vacuum until the porous HTA layer exhibits a porosity between 20% and 50% and a neck size ratio between 0.1 and 0.5, followed by a controlled oxidation generating an oxidation layer of alumina, chromia, or silica at a thickness of about 20 to about 500 nm. In particular embodiments, the oxidized porous HTA layer andmore » « less
Full Text Available
Turbine airfoil with leading edge cooling passage(s) coupled via plenum to film cooling holes, and related method

Patent Lacy, Benjamin Paul; Sezer, Ibrahim; VanTassel, Brad Wilson

A turbine airfoil includes a body including a wall defining pressure and suction sides, and a leading edge extending between the pressure and suction sides. A cooling circuit inside the wall of the body includes at least one of: a) a suction side to pressure side cooling sub-circuit including a first cooling passage(s) extending from the suction side to the pressure side around the leading edge to a first plenum, and a plurality of first film cooling holes communicating with the first plenum and extending through the wall on the pressure side; and b) a pressure side to suction sidemore » « less
Full Text Available

Similar Records

Title: Turbine airfoil to shroud attachment method

Abstract

Citation Formats

Method for improving metallurgical bond in bimetallic castings patent, February 1977

Method of forming metal article having plurality of airfoils extending outwardly from a hub patent, April 1980

Compliant interface for ceramic turbine blades patent, November 1983

Process for the production of gas turbine engine rotors and stators patent, December 1984

Method of manufacturing a turbine rotor patent, January 1985

Method of manufacturing an integral bladed turbine disk patent, September 1985

Method for manufacturing a multiple property integral turbine wheel patent, June 1986

Turbine engine component and method of making the same patent, March 1988

Composite gas turbine blade and method of manufacturing same patent, September 1989

Method of making a turbine engine component patent, September 1990

Method of making an improved turbine engine component patent, October 1990

Method of making a turbine engine component patent, January 1991

Method of making a turbine engine component patent, December 1991

Method of making a turbine engine component patent, January 1993

Method of making a composite casting patent, September 1993

Method of making a composite casting patent, September 1993

Method of making a composite casting patent, November 1993

Bicast vane and shroud rings patent, March 1994

Composite casting method patent, July 1994

Stator vane having reinforced braze joint patent, July 1994

Process for obtaining bimaterial parts by casting an alloy around an insert coated with a metal film patent, January 1995

Plasma spray nozzle with low overspray and collimated flow patent, November 1996

Method of making composite castings using reinforcement insert cladding patent, October 1997

Gas turbine engine vane and method of manufacture patent, August 1998

Method of making composite castings using reinforcement insert cladding patent, November 1999

Low stress connection methodology for thermally incompatible materials patent, June 2002

Ceramic matrix composite turbine vane patent, November 2003

Metal casting fabrication method patent, May 2006

Method for manufacturing cast components patent, October 2007

Bi-cast blade ring for multi-alloy turbine rotor patent-application, October 2006

Metal injection joining patent-application, August 2009

Turbine Airfoil to Shroud Attachment patent-application, October 2011

Method for improving metallurgical bond in bimetallic castings
patent, February 1977

Method of forming metal article having plurality of airfoils extending outwardly from a hub
patent, April 1980

Compliant interface for ceramic turbine blades
patent, November 1983

Process for the production of gas turbine engine rotors and stators
patent, December 1984

Method of manufacturing a turbine rotor
patent, January 1985

Method of manufacturing an integral bladed turbine disk
patent, September 1985

Method for manufacturing a multiple property integral turbine wheel
patent, June 1986

Turbine engine component and method of making the same
patent, March 1988

Composite gas turbine blade and method of manufacturing same
patent, September 1989

Method of making a turbine engine component
patent, September 1990

Method of making an improved turbine engine component
patent, October 1990

Method of making a turbine engine component
patent, January 1991

Method of making a turbine engine component
patent, December 1991

Method of making a turbine engine component
patent, January 1993

Method of making a composite casting
patent, September 1993

Method of making a composite casting
patent, September 1993

Method of making a composite casting
patent, November 1993

Bicast vane and shroud rings
patent, March 1994

Composite casting method
patent, July 1994

Stator vane having reinforced braze joint
patent, July 1994

Process for obtaining bimaterial parts by casting an alloy around an insert coated with a metal film
patent, January 1995

Plasma spray nozzle with low overspray and collimated flow
patent, November 1996

Method of making composite castings using reinforcement insert cladding
patent, October 1997

Gas turbine engine vane and method of manufacture
patent, August 1998

Method of making composite castings using reinforcement insert cladding
patent, November 1999

Low stress connection methodology for thermally incompatible materials
patent, June 2002

Ceramic matrix composite turbine vane
patent, November 2003

Metal casting fabrication method
patent, May 2006

Method for manufacturing cast components
patent, October 2007

Bi-cast blade ring for multi-alloy turbine rotor
patent-application, October 2006

Metal injection joining
patent-application, August 2009

Turbine Airfoil to Shroud Attachment
patent-application, October 2011