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公开(公告)号：US20200377428A1
公开(公告)日：2020-12-03
申请号：US16427663
申请日：2019-05-31
Applicant: United Technologies Corporation
Inventor： Dustin W. Davis
Abstract: A method for manufacturing a solid propellant includes: forming a tool of layers of a first material wherein cuts in the layers form a first interior chamber in the tool; using the tool to mold a second material in the first interior chamber; removing the molded second material from the tool; using the molded second material to mold an interior chamber in a rocket propellant grain; and removing the molded second material from the rocket propellant grain.
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公开(公告)号：US10710154B2
公开(公告)日：2020-07-14
申请号：US15916905
申请日：2018-03-09
Applicant: United Technologies Corporation
Inventor： Ryan C. Breneman , John E. Holowczak , John J. Marcin , Ingrid H. Kerscht , Steven J. Bullied , Dustin W. Davis
Abstract: A method of removing a core of a cast component includes providing a casting that includes a silica based ceramic core in a temperature controlled closed volume; cycling temperature between a first temperature and a second temperature within the temperature controlled closed volume that repeatedly subjects the silica based ceramic core to a beta-to-alpha cristobalite transition that induces microfractures in the silica based ceramic core; and after the cycling temperature, chemically dissolving the silica based ceramic core from the casting.
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公开(公告)号：US10690346B2
公开(公告)日：2020-06-23
申请号：US15476431
申请日：2017-03-31
Applicant: United Technologies Corporation
Inventor： Tracy A. Propheter-Hinckley , Mark F. Zelesky , Atul Kohli , Dustin W. Davis , Ricardo Trindade , Steven Bruce Gautschi , Brandon W. Spangler , Trevor Rudy , Benjamin Bellows , Dave J. Hyland , James B. Hoke , Stephen K. Kramer , Dennis M. Moura
Abstract: A combustor for a gas turbine engine includes a combustor shell having a shell opening therethrough, a combustor panel having a stud attached thereto, the stud extending through the shell opening. The stud includes a standoff to define an intermediate passage between the combustor shell and the combustor panel. A retainer is attached to the stud. A washer surrounds the stud and is positioned between the retainer and the combustor shell. The washer at least partially defines a cooling flow passage configured to direct a cooling airflow through the shell opening to impinge the cooling flow on at least one of the stud or the standoff.
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公开(公告)号：US20190275583A1
公开(公告)日：2019-09-12
申请号：US15916905
申请日：2018-03-09
Applicant: United Technologies Corporation
Inventor： Ryan C. Breneman , John E. Holowczak , John J. Marcin , Ingrid H. Kerscht , Steven J. Bullied , Dustin W. Davis
IPC: B22D29/00
Abstract: A method of removing a core of a cast component includes providing a casting that includes a silica based ceramic core in a temperature controlled closed volume; cycling temperature between a first temperature and a second temperature within the temperature controlled closed volume that repeatedly subjects the silica based ceramic core to a beta-to-alpha cristobalite transition that induces microfractures in the silica based ceramic core; and after the cycling temperature, chemically dissolving the silica based ceramic core from the casting.
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15.发明申请公开(公告)号：US20190127882A1
公开(公告)日：2019-05-02
申请号：US15797855
申请日：2017-10-30
Applicant: United Technologies Corporation
Inventor： Joseph V. Mantese , Ryan C. Breneman , Thomas Anthony Rebbecchi , Andrew Boyne , John Joseph Marcin , Dustin W. Davis , David Ulrich Furrer , James Tilsley Auxier
CPC classification number: C30B30/04 , B22D27/02 , B22D27/045 , C30B21/02 , F27B14/061 , F27B14/14 , F27D11/06 , F27D2099/0015 , H05B6/067 , H05B6/105
Abstract: An induction furnace assembly comprising a chamber having a mold; a primary inductive coil coupled to the chamber; a susceptor surrounding the chamber between the primary inductive coil and the mold; and a shield material contained in a reservoir coupled to or proximate the mold between the susceptor and the mold; the shield material configured to attenuate a portion of an electromagnetic flux generated by the primary induction coil that is not attenuated by the susceptor.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20190127878A1
公开(公告)日：2019-05-02
申请号：US15797888
申请日：2017-10-30
Applicant: United Technologies Corporation
Inventor： Joseph V. Mantese , Ryan C. Breneman , Thomas Anthony Rebbecchi , Andrew Boyne , John Joseph Marcin , Dustin W. Davis , David Ulrich Furrer , James Tilsley Auxier
Abstract: An induction furnace assembly comprising a chamber having a mold; a primary inductive coil coupled to the chamber; a layered susceptor comprising at least two layers of magnetic field attenuating material surrounding the chamber between the primary inductive coil and the mold to nullify the electromagnetic field in the hot zone of the furnace chamber.
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17.发明申请公开(公告)号：US20190127877A1
公开(公告)日：2019-05-02
申请号：US15797799
申请日：2017-10-30
Applicant: United Technologies Corporation
Inventor： Joseph V. Mantese , Thomas Anthony Rebbecchi , Ryan C. Breneman , Andrew Boyne , John Joseph Marcin , Dustin W. Davis , David Ulrich Furrer , James Tilsley Auxier
Abstract: A process for directional solidification of a cast part comprises energizing a primary inductive coil coupled to a chamber having a mold containing a material; energizing a primary inductive coil within the chamber to heat the mold via radiation from a susceptor, wherein the resultant electromagnetic field partially leaks through the susceptor coupled to the chamber between the primary inductive coil and the mold; determining a magnetic flux profile of the electromagnetic field; sensing a magnetic flux leakage past the susceptor within the chamber; generating a control field from a secondary compensation coil coupled to the chamber, wherein the control field controls the magnetic flux experienced by the cast part; and casting the material within the mold under the controlled degree of flux leakage.
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公开(公告)号：US10906096B2
公开(公告)日：2021-02-02
申请号：US16781403
申请日：2020-02-04
Applicant: United Technologies Corporation
Inventor： Thomas Anthony Rebbecchi , Joseph V. Mantese , Ryan C. Breneman , Andrew Boyne , John Joseph Marcin , Dustin W. Davis , David Ulrich Furrer , James Tilsley Auxier
Abstract: A process for directional solidification of a cast part comprises energizing a primary inductive coil coupled to a chamber having a mold containing a material; generating an electromagnetic field with the primary inductive coil within the chamber, wherein said electromagnetic field is partially attenuated by a susceptor coupled to said chamber between said primary inductive coil and said mold; determining a magnetic flux profile of the electromagnetic field after it passes through the susceptor; sensing a component of the magnetic flux in the interior of the susceptor proximate the mold; positioning a mobile secondary compensation coil within the chamber; generating a control field from a secondary compensation coil, wherein said control field controls said magnetic flux; and casting the material within the mold.
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公开(公告)号：US20200086380A1
公开(公告)日：2020-03-19
申请号：US16131695
申请日：2018-09-14
Applicant: United Technologies Corporation
Inventor： John Paulus , Dustin W. Davis , Joel H. Wagner
Abstract: A core element of an investment core for use in a casting process used to produce an airfoil includes an investment core body, an extension connected to and protruding from the investment core body, and a connection portion connected to the investment core body and to the extension. The investment core body comprises a ceramic material. A shape of the extension comprises a tube with a centerline axis passing through a center of the extension. A shape of a cross-section of the extension taken along a plane perpendicular to the extension centerline axis comprises an ellipse. The extension is connected to the investment core body by the connection portion.
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公开(公告)号：US10589351B2
公开(公告)日：2020-03-17
申请号：US15797823
申请日：2017-10-30
Applicant: United Technologies Corporation
Inventor： Thomas Anthony Rebbecchi , Joseph V. Mantese , Ryan C. Breneman , Andrew Boyne , John Joseph Marcin , Dustin W. Davis , David Ulrich Furrer , James Tilsley Auxier
Abstract: A process for directional solidification of a cast part comprises energizing a primary inductive coil coupled to a chamber having a mold containing a material; generating an electromagnetic field with the primary inductive coil within the chamber, wherein said electromagnetic field is partially attenuated by a susceptor coupled to said chamber between said primary inductive coil and said mold; determining a magnetic flux profile of the electromagnetic field after it passes through the susceptor; sensing a component of the magnetic flux in the interior of the susceptor proximate the mold; positioning a mobile secondary compensation coil within the chamber; generating a control field from a secondary compensation coil, wherein said control field controls said magnetic flux; and casting the material within the mold.
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