Patents by Inventor Bradford A. Cowles
Bradford A. Cowles 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: 10369625Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.Type: GrantFiled: June 5, 2015Date of Patent: August 6, 2019Assignee: United Technologies CorporationInventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, Jr., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
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Patent number: 10265763Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.Type: GrantFiled: October 5, 2018Date of Patent: April 23, 2019Assignee: United Technologies CorporationInventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, Jr., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
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Publication number: 20190039128Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.Type: ApplicationFiled: October 5, 2018Publication date: February 7, 2019Applicant: United Technologies CorporationInventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, JR., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
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Patent number: 9885240Abstract: A repaired article includes a body extending between a first side and a second side. The body has a repair section with an associated thickness between the first side and the second side. The repair section includes regions of plastic deformation distributed through the thickness. A gas turbine engine including the body is also disclosed.Type: GrantFiled: August 22, 2013Date of Patent: February 6, 2018Assignee: UNITED TECHNOLOGIES CORPORATIONInventors: Edward R. Szela, Michael A. Joy, Daniel A. Bales, Bradford A. Cowles, David A. Rutz
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Publication number: 20160031006Abstract: A method for casting comprising: providing a seed, the seed characterized by: an arcuate form and a crystalline orientation progressively varying along an arc of the form; providing molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material.Type: ApplicationFiled: June 5, 2015Publication date: February 4, 2016Applicant: United Technologies CorporationInventors: Dilip M. Shah, Paul D. Genereux, Alan D. Cetel, John J. Marcin, JR., Steven J. Bullied, Mario P. Bochiechio, Kevin W. Schlichting, Bradford A. Cowles, Carl R. Verner, David U. Furrer, Venkatarama K. Seetharaman
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Publication number: 20130343901Abstract: A repaired article includes a body extending between a first side and a second side. The body has a repair section with an associated thickness between the first side and the second side. The repair section includes regions of plastic deformation distributed through the thickness. A gas turbine engine including the body is also disclosed.Type: ApplicationFiled: August 22, 2013Publication date: December 26, 2013Applicant: United Technologies CorporationInventors: Edward R. Szela, Michael A. Joy, Daniel A. Bales, Bradford A. Cowles, David A. Rutz
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Patent number: 8539659Abstract: A method of repairing an article includes removing an undesirable section of the article, attaching a repair section to the article at a location from which the undesirable section has been removed, and mechanically working the repair section to achieve a reduction in a cross-sectional area of the repair section.Type: GrantFiled: April 23, 2008Date of Patent: September 24, 2013Assignee: United Technologies CorporationInventors: Edward R. Szela, Michael A. Joy, Daniel A. Bales, Bradford A. Cowles, David A. Rutz
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Publication number: 20130004327Abstract: A method of improving fatigue strength in a fan blade includes fabricating a metal fan blade with an airfoil and a root and deep peening the root.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Thomas J. Watson, Stephen E. Pasakarnis, Bradford A. Cowles, Blair A. Smith
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Publication number: 20090269208Abstract: A method of repairing an article includes removing an undesirable section of the article, attaching a repair section to the article at a location from which the undesirable section has been removed, and mechanically working the repair section to achieve a reduction in a cross-sectional area of the repair section.Type: ApplicationFiled: April 23, 2008Publication date: October 29, 2009Inventors: Edward R. Szela, Michael A. Joy, Daniel A. Bales, Bradford A. Cowles, David A. Rutz
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Patent number: 6355117Abstract: Compositional requirements and processing improvements are disclosed which improve the hydrogen embrittlement resistance and the fatigue resistance in air of nickel base single crystal articles. The compositional requirements enlarge the difference between the &ggr;′ solvus temperature and the incipient melting temperature, thus enabling the solution of &ggr;/&ggr;′ eutectic islands without causing incipient melting, while hot isostatic pressing and careful melt practice eliminate porosity and carbides, borides and nitrides, all of which act as crack initiation sites.Type: GrantFiled: March 1, 2000Date of Patent: March 12, 2002Assignee: United Technologies CorporationInventors: Daniel P. DeLuca, Bradford A. Cowles, Maurice L. Gell, David N. Duhl, Alan D. Cetel, Charles M. Biondo
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Patent number: 5900084Abstract: Columnar grain and single crystal nickel base superalloys are heat treated to provide a damage tolerant microstructure. The microstructure contains large, irregularly shaped "barrier" .gamma.' particles interspersed in an ordered array of smaller cuboidal .gamma.' particles in a .gamma. phase matrix. The barrier particles interrupt the progression of cracks through the microstructure. The invention process includes solutioning the .gamma.' phase, cooling slowly to a temperature about 50.degree. F. to 150.degree. F. (28.degree. C. to 83.degree. C.) below the .gamma.' solvus temperature, further cooling at a rate of at least about 100.degree. F. (56.degree. C.) per minute to less than 1000.degree. F. (538.degree. C.), reheating to 1975.degree. F. to 2000.degree. F. (1079.degree. C. to 1093.degree. C.) and holding for about four to six hours, cooling at 100.degree. F. (56.degree. C.) per minute to less than 1000.degree. F. (538.degree. C.), and heating to 1600.degree. F..+-.25.degree. F. (871.degree. C..+-.14.Type: GrantFiled: January 5, 1996Date of Patent: May 4, 1999Assignee: United Technologies CorporationInventors: Daniel P. DeLuca, Howard B. Jones, Bradford A. Cowles
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Patent number: 5605584Abstract: Columnar grain and single crystal nickel base superalloys are heat treated to provide a damage tolerant microstructure. The microstructure contains large, irregularly shaped "barrier" .gamma.' particles interspersed in an ordered array of smaller cuboidal .gamma.' particles in a .gamma. phase matrix. The barrier particles interrupt the progression of cracks through the microstructure. The invention process includes solutioning the .gamma.' phase, cooling slowly to a temperature about 50.degree. F. to 150.degree. F. (28.degree. C. to 83.degree. C.) below the .gamma.' solvus temperature, further cooling at a rate of at least about 100.degree. F. (56.degree. C.) per minute to less than 1000.degree. F. (538.degree. C.), reheating to 1975.degree. F. to 2000.degree. F. (1079.degree. C. to 1093.degree. C.) and holding for about four to six hours, cooling at 100.degree. F. (56.degree. C.) per minute to less than 1000.degree. F. (538.degree. C.), and heating to 1600.degree. F. .+-.25.degree. F. (871.degree. C. .+-.14.Type: GrantFiled: January 30, 1995Date of Patent: February 25, 1997Assignee: United Technologies CorporationInventors: Daniel P. DeLuca, Howard B. Jones, Bradford A. Cowles