Patents by Inventor Shaoluo L. Butler
Shaoluo L. Butler 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: 9423130Abstract: A gas turbine engine has an annular reverse-flow combustor with a combustor inner liner enclosing a combustion chamber. The inner liner having a dome portion at an upstream end of the combustor and a downstream combustor exit defined between a small exit duct portion and a large exit duct portion. At least one of the dome portion, the small exit duct portion and the large exit duct portion is made of a separately formed hemi-toroidal shell composed of a ceramic matrix composite.Type: GrantFiled: April 28, 2014Date of Patent: August 23, 2016Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Lev Alexander Prociw, Aleksander Kojovic, David C. Jamon, Jun Shi, Shaoluo L. Butler
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Publication number: 20140311152Abstract: A gas turbine engine has an annular reverse-flow combustor with a combustor inner liner enclosing a combustion chamber. The inner liner having a dome portion at an upstream end of the combustor and a downstream combustor exit defined between a small exit duct portion and a large exit duct portion. At least one of the dome portion, the small exit duct portion and the large exit duct portion is made of a separately formed hemi-toroidal shell composed of a ceramic matrix composite.Type: ApplicationFiled: April 28, 2014Publication date: October 23, 2014Applicant: Pratt & Whitney Canada Corp.Inventors: Lev Alexander PROCIW, Aleksander Kojovic, David C. Jamon, Jun Shi, Shaoluo L. Butler
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Patent number: 8864492Abstract: A reverse flow combustor has an inlet end. A flowpath extends downstream from the inlet end through a turn. The turn directs the flowpath radially inward and reversing an axial flow direction. A large exit duct (LED) is along the turn. A small exit duct (SED) is along the turn and joined by a joint to a mounting structure to resist separation in a first axial direction. The joint comprises: a first surface on the SED facing partially radially inward; and a mounting feature engaging the first surface.Type: GrantFiled: June 23, 2011Date of Patent: October 21, 2014Assignees: United Technologies Corporation, Pratt & Whitney Canada Corp.Inventors: Jun Shi, David C. Jarmon, Lee A. Hoffman, David J. Bombara, Shaoluo L. Butler, Lev A. Prociw, Aleksandar Kojovic
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Patent number: 8801372Abstract: A shroud for a gas turbine engine includes a leading portion having a leading edge and a first set of circumferentially spaced slots at the leading edge that break up the leading portion into circumferentially spaced segments separated by the first set of slots, and a trailing portion adjacent to the leading portion. The trailing portion has a trailing edge.Type: GrantFiled: November 5, 2012Date of Patent: August 12, 2014Assignee: United Technologies CorporationInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Patent number: 8745989Abstract: A gas turbine engine has an annular reverse-flow combustor with a combustor inner liner enclosing a combustion chamber. The inner liner having a dome portion at an upstream end of the combustor and a downstream combustor exit defined between a small exit duct portion and a large exit duct portion. At least one of the dome portion, the small exit duct portion and the large exit duct portion is made of a separately formed hemi-toroidal shell composed of a ceramic matrix composite.Type: GrantFiled: April 9, 2009Date of Patent: June 10, 2014Assignee: Pratt & Whitney Canada Corp.Inventors: Lev Alexander Prociw, Aleksander Kojovic, David C. Jarmon, Jun Shi, Shaoluo L. Butler
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Patent number: 8739547Abstract: A first member is retained to a second member to resist separation in a first direction. A joint comprises a first recess in the first member. The first member comprises at least a ceramic matrix composite (CMC) substrate. The joint comprises at least one ceramic key partially accommodated in the first recess and engaging the second member. The second member comprises at least a metallic substrate.Type: GrantFiled: June 23, 2011Date of Patent: June 3, 2014Assignee: United Technologies CorporationInventors: David C. Jarmon, Shaoluo L. Butler
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Publication number: 20120328996Abstract: A reverse flow combustor has an inlet end. A flowpath extends downstream from the inlet end through a turn. The turn directs the flowpath radially inward and reversing an axial flow direction. A large exit duct (LED) is along the turn. A small exit duct (SED) is along the turn and joined by a joint to a mounting structure to resist separation in a first axial direction. The joint comprises: a first surface on the SED facing partially radially inward; and a mounting feature engaging the first surface.Type: ApplicationFiled: June 23, 2011Publication date: December 27, 2012Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Jun Shi, David C. Jarmon, Lee A. Hoffman, David J. Bombara, Shaoluo L. Butler, Lev A. Prociw
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Publication number: 20120328366Abstract: A first member is retained to a second member to resist separation in a first direction. A joint comprises a first recess in the first member. The first member comprises at least a ceramic matrix composite (CMC) substrate. The joint comprises at least one ceramic key partially accommodated in the first recess and engaging the second member. The second member comprises at least a metallic substrate.Type: ApplicationFiled: June 23, 2011Publication date: December 27, 2012Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: David C. Jarmon, Shaoluo L. Butler
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Patent number: 8328505Abstract: A shroud suitable for use in combination with an adjacent rotor blade includes a leading portion comprising a first thickness, and a trailing portion adjacent to the leading portion and comprising a second thickness, wherein the second thickness is less than the first thickness so that stiffness in the leading portion is greater than in the trailing portion and radial expansion by thermal growth of the leading portion of the shroud is constrained.Type: GrantFiled: November 30, 2011Date of Patent: December 11, 2012Assignee: United Technologies CorporationInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Publication number: 20120070276Abstract: A shroud suitable for use in combination with an adjacent rotor blade includes a leading portion comprising a first thickness, and a trailing portion adjacent to the leading portion and comprising a second thickness, wherein the second thickness is less than the first thickness so that stiffness in the leading portion is greater than in the trailing portion and radial expansion by thermal growth of the leading portion of the shroud is constrained.Type: ApplicationFiled: November 30, 2011Publication date: March 22, 2012Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Patent number: 8092160Abstract: A shroud suitable for use in a gas turbine engine exhibits substantially uniform thermal growth.Type: GrantFiled: November 12, 2009Date of Patent: January 10, 2012Assignee: United Technologies CorporationInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Patent number: 8000942Abstract: This disclosure relates to a design methodology used in manufacturing a broaching tool for cutting slots in aerospace disk applications. The method includes modeling geometry of the slot and the broach tool, which is based upon an initial minimum tooth rise that is determined empirically for the particular disk material. The number of broach inserts and teeth per insert is calculated, and the broach inserts are modeled. The stresses and deformation of the lug are calculated in a finite elements environment based upon simulated incremental broach tool movements. If the lug is not within specifications based upon design constraints, then the broach tool is revised and the simulations are repeated until the slot is within the desired specifications.Type: GrantFiled: May 14, 2008Date of Patent: August 16, 2011Assignee: United Technologies CorporationInventors: Tahany Ibrahim El-Wardany, Shaoluo L. Butler, Barclay Bingham Young, Jr., Agnieszka M. Wusatowska-Samek, James D. Campbell, Jr., Jason Elliott, Adam Cade Wilcox, Ryan Clifford Cox
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Publication number: 20100257864Abstract: A gas turbine engine has an annular reverse-flow combustor with a combustor inner liner enclosing a combustion chamber. The inner liner having a dome portion at an upstream end of the combustor and a downstream combustor exit defined between a small exit duct portion and a large exit duct portion. At least one of the dome portion, the small exit duct portion and the large exit duct portion is made of a separately formed hemi-toroidal shell composed of a ceramic matrix composite.Type: ApplicationFiled: April 9, 2009Publication date: October 14, 2010Applicant: PRATT & WHITNEY CANADA CORP.Inventors: Lev Alexander Prociw, Aleksander Kojovic, David C. Jarmon, Jun Shi, Shaoluo L. Butler
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Patent number: 7771160Abstract: A ceramic shroud assembly suitable for use in a gas turbine engine comprises a metal clamp ring shrink fitted around a ceramic shroud ring and an insulating and compliant interlayer. The interlayer is positioned between the metal clamp ring and the ceramic shroud ring.Type: GrantFiled: August 10, 2006Date of Patent: August 10, 2010Assignee: United Technologies CorporationInventors: Jun Shi, Shaoluo L. Butler, Kevin E. Green
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Publication number: 20100170264Abstract: A shroud suitable for use in a gas turbine engine exhibits substantially uniform thermal growth.Type: ApplicationFiled: November 12, 2009Publication date: July 8, 2010Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Publication number: 20100104433Abstract: A ceramic shroud assembly suitable for use in a gas turbine engine comprises a metal clamp ring shrink fitted around a ceramic shroud ring and an insulating and compliant interlayer. The interlayer is positioned between the metal clamp ring and the ceramic shroud ring.Type: ApplicationFiled: August 10, 2006Publication date: April 29, 2010Applicant: United Technologies Corporation One Financial PlazaInventors: Jun Shi, Shaoluo L. Butler, Kevin E. Green
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Patent number: 7665960Abstract: A shroud suitable for use in a gas turbine engine exhibits substantially uniform thermal growth.Type: GrantFiled: August 10, 2006Date of Patent: February 23, 2010Assignee: United Technologies CorporationInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn N. Levasseur
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Publication number: 20090287458Abstract: This disclosure relates to a design methodology used in manufacturing a broaching tool for cutting slots in aerospace disk applications. The method includes modeling geometry of the slot and the broach tool, which is based upon an initial minimum tooth rise that is determined empirically for the particular disk material. The number of broach inserts and teeth per insert is calculated, and the broach inserts are modeled. The stresses and deformation of the lug are calculated in a finite elements environment based upon simulated incremental broach tool movements. If the lug is not within specifications based upon design constraints, then the broach tool is revised and the simulations are repeated until the slot is within the desired specifications.Type: ApplicationFiled: May 14, 2008Publication date: November 19, 2009Inventors: Tahany Ibrahim El-Wardany, Shaoluo L. Butler, Barclay Bingham Young, JR., Agnieszka M. Wusatowska-Sarnek, James D. Campbell, JR., Jason Elliott, Adam Cade Wilcox, Ryan Clifford Cox
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Publication number: 20090272122Abstract: A shroud suitable for use in a gas turbine engine exhibits substantially uniform thermal growth.Type: ApplicationFiled: August 10, 2006Publication date: November 5, 2009Applicant: United Technologies CorporationInventors: Jun Shi, Kevin E. Green, Shaoluo L. Butler, Gajawalli V. Srinivasan, Glenn Levasseur