Patents by Inventor Dilip M. Shah

Dilip M. Shah 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).

  • Publication number: 20180266262
    Abstract: Aspects of the disclosure are directed to a seal configured to interface with at least a first component and a second component of a gas turbine engine. A method for forming the seal includes obtaining an ingot of a fine grained, or a coarse grained, or a columnar grained or a single crystal material from a precipitation hardened nickel base superalloy containing at least 40% by volume of the precipitate of the form Ni3(Al, X), where X is a metallic or refractory element, and processing the ingot to generate a sheet of the material, where the sheet has a thickness within a range of 0.010 inches and 0.050 inches inclusive.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 20, 2018
    Inventors: Alan D. Cetel, Dilip M. Shah, Eric A. Hudson, Raymond Surace
  • Patent number: 10065239
    Abstract: A casting mold (260) comprises a shell (262) extending from a lower end (264) to an upper end (266) and having: an interior space (280) for casting metal; and an opening (268) for receiving metal to be cast. A plurality of thermocouples (900) are vertically-spaced from each other on the shell.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: September 4, 2018
    Assignee: United Technologies Corporation
    Inventors: John J. Marcin, Jr., Steven J. Bullied, Dilip M. Shah, Alan D. Cetel, Emily K. Kreek
  • Publication number: 20180221943
    Abstract: A die casting system includes a die including a plurality of die components that define a die cavity, a single crystal shot tube in fluid communication with the die cavity, and a shot tube plunger tip moveable within the shot tube to communicate a charge of a molten or semi-molten material into the die cavity. The system further includes a vacuum chamber that applies a vacuum to render a die casting process wherein at least a portion of the die is positioned within the vacuum chamber.
    Type: Application
    Filed: February 8, 2017
    Publication date: August 9, 2018
    Inventors: John Joseph Marcin, Dilip M. Shah
  • Patent number: 10035185
    Abstract: A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method comprises introducing a molten alloy into a mold; and varying a composition of the introduced alloy during the introduction so as to produce a compositional variation.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: July 31, 2018
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel
  • Patent number: 10012099
    Abstract: Aspects of the disclosure are directed to a seal configured to interface with at least a first component and a second component of a gas turbine engine. A method for forming the seal includes obtaining an ingot of a fine grained, or a coarse grained, or a columnar grained or a single crystal material from a precipitation hardened nickel base superalloy containing at least 40% by volume of the precipitate of the form Ni3(Al, X), where X is a metallic or refractory element, and processing the ingot to generate a sheet of the material, where the sheet has a thickness within a range of 0.010 inches and 0.050 inches inclusive.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: July 3, 2018
    Assignee: United Technologies Corporation
    Inventors: Alan D. Cetel, Dilip M. Shah, Eric A. Hudson, Raymond Surace
  • Patent number: 10005125
    Abstract: A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method includes introducing a molten alloy into a mold. A composition of the introduced alloy is varied during the introduction so as to produce a compositional variation.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 26, 2018
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel
  • Publication number: 20180056380
    Abstract: Shot sleeves for high temperature die casting include a nickel-based alloy having a low modulus single crystal with axi-symmetric orientation.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 1, 2018
    Inventors: John Joseph Marcin, Dilip M. Shah, Carl R. Verner, Albert Rabinovich, Weiduo Yu, Thomas N. Slavens
  • Publication number: 20180051360
    Abstract: A formable nickel based superalloy composition including a two phase ?/?? precipitation hardenable nickel base superalloy with a sum of primarily ?? forming elements in atom % is in the range of about 10-16, forming about a 40-64 volume % of the ?? precipitate, cast in form of a single crystal.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 22, 2018
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Patent number: 9802248
    Abstract: A method for casting an article comprises a first region and a second region. The method comprises casting an alloy in a shell, the shell having a casting core protruding from a first metal piece; and deshelling and decoring to remove the shell and core and leave the first region formed by the first piece and the second region formed by the casted alloy.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: October 31, 2017
    Assignee: United Technologies Corporation
    Inventors: John J. Marcin, Jr., Steven J. Bullied, Dilip M. Shah, Alan D. Cetel
  • Publication number: 20170306782
    Abstract: An embodiment of a turbine assembly includes, among other possible things, a first component including a first component surface, a second component including a second component surface spaced apart from the first component surface, and a brush seal disposed between the first component and the second component. The brush seal includes, among other things, a first bristled region extending in a first direction from a backing plate, and sealingly engaging one of the first component surface and the second component surface. At least one of the backing plate and the first bristled region includes a nickel-based superalloy material having at least 40% of a Ni3(Al,X) precipitate phase, X being a metallic or refractory element other than Al.
    Type: Application
    Filed: April 25, 2016
    Publication date: October 26, 2017
    Inventors: Dilip M. Shah, Katelyn Kwoka, Alan D. Cetel, Venkatarama K. Seetharaman, Michael G. McCaffrey
  • Publication number: 20170259330
    Abstract: An alloy part is cast in a mold (280) having a part-forming cavity (292, 294, 296). The method comprises pouring a first alloy into the mold. The pouring causes: a surface (550) of the first alloy in the part-forming cavity to raise relative to the part-forming cavity; a branch flow of the poured first alloy to pass upwardly through a first portion (304) of a passageway; and the branch flow to pass downwardly through a second portion (310), of the passageway; solidifying some of the first alloy in the passageway to block the passageway while at least some of the first alloy in the part-forming cavity remains molten. A second alloy is poured into the mold atop the first alloy and solidified.
    Type: Application
    Filed: May 25, 2017
    Publication date: September 14, 2017
    Applicant: United Technologies Corporation
    Inventors: Steven J. Bullied, Dilip M. Shah, Alan D. Cetel, John J. Marcin
  • Publication number: 20170211401
    Abstract: Aspects of the disclosure are directed to a seal configured to interface with at least a first component and a second component of a gas turbine engine. A method for forming the seal includes obtaining an ingot of a fine grained, or a coarse grained, or a columnar grained or a single crystal material from a precipitation hardened nickel base superalloy containing at least 40% by volume of the precipitate of the form Ni3(Al, X), where X is a metallic or refractory element, and processing the ingot to generate a sheet of the material, where the sheet has a thickness within a range of 0.010 inches and 0.050 inches inclusive.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 27, 2017
    Inventors: Alan D. Cetel, Dilip M. Shah, Eric A. Hudson, Raymond Surace
  • Patent number: 9687910
    Abstract: An alloy part is cast in a mold (280) having a part forming cavity (292, 294, 296). The method comprises pouring a first alloy into the mold. The pouring causes: a surface (550) of the first alloy in the part forming cavity to raise relative to the part forming cavity; a branch flow of the poured first alloy to pass upwardly through a first portion (304) of a passageway; and the branch flow to pass downwardly through a second portion (310), of the passageway; solidifying some of the first alloy in the passageway to block the passageway while at least some of the first alloy in the part forming cavity remains molten. A second alloy is poured into the mold atop the first alloy and solidified.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 27, 2017
    Assignee: United Technologies Corporation
    Inventors: Steven J. Bullied, Dilip M. Shah, Alan D. Cetel, John J. Marcin
  • Publication number: 20170130289
    Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus <111> crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded <111> single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular <111> texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.
    Type: Application
    Filed: January 20, 2017
    Publication date: May 11, 2017
    Inventors: Dilip M. Shah, Herbert A. Chin, John Joseph Marcin, Paul L. Reynolds, Gabriel L. Suciu, Paul D. Genereux
  • Publication number: 20170088926
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Patent number: 9551049
    Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus <111> crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded <111> single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular <111> texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: January 24, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Dilip M. Shah, Herbert A. Chin, John Joseph Marcin, Paul L. Reynolds, Gabriel L. Suciu, Paul D. Genereux, Carl E. Kelly
  • Publication number: 20160311016
    Abstract: A method of manufacturing includes providing a casting assembly, providing a material having solid, transition, and liquid phases, heating the material to form the liquid phase, supplying the material to the casting assembly, cooling the material, monitoring the solidification of the material from the liquid phase through the transition phase, and moving one of the casting mold or the reusable core in a first direction relative to the other when a substantial portion of the reusable core contacts the transition phase. The casting assembly comprises a casting mold and a reusable core inserted within the casting mold.
    Type: Application
    Filed: April 24, 2015
    Publication date: October 27, 2016
    Applicant: United Technologies Corporation
    Inventors: Dilip M. Shah, John Joseph Marcin, Steven J. Bullied, Carl R. Verner, Ryan C. Breneman
  • Publication number: 20160311015
    Abstract: A pour liner for a shot sleeve of a die-casting system including a bonding layer within a slot in a shot sleeve substrate and a refractory metal layer adjacent to the bonding layer. A method of manufacturing a shot sleeve including forming a slot in the slot sleeve, laser cladding a bonding layer within the slot, and laser cladding a refractory metal layer onto the bonding layer.
    Type: Application
    Filed: April 24, 2015
    Publication date: October 27, 2016
    Inventors: LIM YUAN KWANG, CHEE YAO HUI, ZHENG CHUAN CHEN, CHARLENE KWAN YEE LING, MARIO P. BOCHIECHIO, AWADH B. PANDEY, DILIP M. SHAH
  • Publication number: 20160312894
    Abstract: The present disclosure relates to advanced materials, particularly single crystal grain structures including the formation of single crystal grain structures. Single crystal grain structures offer improved mechanical properties when used with individual components. Improving mechanical properties is favorable for components that are used in applications with high temperature, pressure, and stress. In these applications, mechanical failure is extremely undesirable. Individual components, such as seals, can be designed with a single crystal grain structure in a preferred direction. By selecting a preferred direction, and orienting the single crystal grain structure accordingly, the single crystal grain structure can improve the component's mechanical properties. Single crystal grain structure seals and the method of forming the seals, therefore, offer various improvements to individual components, specifically when the components are designed for high temperature, pressure, and stress applications.
    Type: Application
    Filed: April 24, 2015
    Publication date: October 27, 2016
    Inventors: Michael G. McCAFFREY, Jeffrey M. WITTMAN, Dilip M. SHAH, Alan D. CETEL, Timothy M. DAVIS, Mark J. ROGERS
  • Publication number: 20160273079
    Abstract: The present disclosure provides a method of preparing superalloy metals having a crystallographic texture controlled micro structure by electron beam melting.
    Type: Application
    Filed: October 28, 2014
    Publication date: September 22, 2016
    Inventors: Gopal Das, Luliana Cernatescu, Dilip M. Shah