Patents by Inventor Frederick E. Pinkerton

Frederick E. Pinkerton 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: 20210296027
    Abstract: A three-dimensional object may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anil K Sachdev, Frederick E Pinkerton, Raja K Mishra, Tyson W Brown
  • Patent number: 11031161
    Abstract: A three-dimensional object made of a bulk nitride, carbide, or boride-containing material may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material. In one form, the three-dimensional object may comprise a permanent magnet made up of a plurality of solid layers of fused iron nitride material having a magnetic Fe16N2 phase.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: June 8, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Anil K. Sachdev, Frederick E. Pinkerton, Raja K. Mishra, Tyson W. Brown
  • Patent number: 10930417
    Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: February 23, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS
    Inventors: Chen Zhou, Frederick E. Pinkerton
  • Patent number: 10665387
    Abstract: A method of fabricating a curvilinear magnet includes forming at least one slot in a material billet. The slotted material billet is inserted into a mold having a curvilinear pocket. The mold is closed around the slotted material billet such that the slotted material billet conforms to the curvilinear pocket and forms a curvilinear billet. The curvilinear billet is arranged in a structure. The curvilinear billet arranged in the structure is then magnetized.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: May 26, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael P. Balogh, Frederick E. Pinkerton, Anil Singh Bika, Ingrid A. Rousseau
  • Patent number: 10519531
    Abstract: According to aspects of the present disclosure, a ternary alloy includes a dual-phase microstructure including a first phase and a second phase. The first phase defines a hexagonal close-packed structure with a stoichiometric ratio of Al4Fe1.7Si. The second phase defines a face-centered cubic structure with a stoichiometric ratio of Al3Fe2Si. The dual-phase microstructure is stable above about 800° C., and the dual-phase microstructure has a first-phase abundance greater than about 50 parts by weight and a second-phase abundance less than about 50 parts by weight based on 100 parts by weight of the ternary alloy.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: December 31, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Zhongyi Liu, Frederick E. Pinkerton
  • Publication number: 20190348202
    Abstract: A three-dimensional object made of a bulk nitride, carbide, or boride-containing material may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material. In one form, the three-dimensional object may comprise a permanent magnet made up of a plurality of solid layers of fused iron nitride material having a magnetic Fe16N2 phase.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 14, 2019
    Inventors: Anil K. Sachdev, Frederick E. Pinkerton, Raja K. Mishra, Tyson W. Brown
  • Patent number: 10460871
    Abstract: A method for fabricating a non-planar magnet includes extruding a precursor material including neodymium iron boron crystalline grains into an original anisotropic neodymium iron boron permanent magnet having an original shape, wherein the original anisotropic neodymium iron boron permanent magnet has at least about 90 percent neodymium iron boron magnetic material by volume. The original anisotropic neodymium iron boron permanent magnet is heated to a deformation temperature. The original anisotropic neodymium iron boron permanent magnet is deformed into a reshaped anisotropic neodymium iron boron permanent magnet having a second shape substantially different from the original shape using heated tooling to apply a deformation load to the original anisotropic neodymium iron boron permanent magnet.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: October 29, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Frederick E. Pinkerton, Anil K. Sachdev
  • Patent number: 10260131
    Abstract: In an example of a method for forming a high-strength, lightweight alloy, starting materials are provided. The starting materials include aluminum, iron, and silicon. The starting materials are ball milled to generate the high-strength, lightweight alloy of a stable AlxFeySiz phase, wherein x ranges from about 3 to about 5, y ranges from about 1.5 to about 2.2, and z is about 1.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: April 16, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhongyi Liu, Frederick E. Pinkerton, Tengjiao Qi
  • Patent number: 10141795
    Abstract: An electric motor is provided for use in an electromechanical transmission that utilizes automatic transmission fluid. The electric motor includes a stator and a rotor. The rotor includes a plurality of permanent magnets can include magnetic particles coated with hydrogen impermeable material. According to an alternative embodiment, the entire permanent magnet or the rotor itself can be coated with hydrogen impermeable material. According to a further alternative embodiment, the permanent magnet particles can be secured by a binder that includes a hydrogen storage compound that prevents hydrogen from affecting magnetic properties of the permanent magnet.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: November 27, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Margarita P. Thompson, Frederick E. Pinkerton, Michael P. Balogh, Gayatri Vyas Dadheech, Xiaoqing Zeng
  • Publication number: 20180322990
    Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 8, 2018
    Inventors: Chen Zhou, Frederick E. Pinkerton
  • Patent number: 10062482
    Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: August 28, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chen Zhou, Frederick E. Pinkerton
  • Publication number: 20180237890
    Abstract: According to aspects of the present disclosure, a ternary alloy includes a dual-phase microstructure including a first phase and a second phase. The first phase defines a hexagonal close-packed structure with a stoichiometric ratio of Al4Fe1.7Si. The second phase defines a face-centered cubic structure with a stoichiometric ratio of Al3Fe2Si. The dual-phase microstructure is stable above about 800° C., and the dual-phase microstructure has a first-phase abundance greater than about 50 parts by weight and a second-phase abundance less than about 50 parts by weight based on 100 parts by weight of the ternary alloy.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhongyi Liu, Frederick E. Pinkerton
  • Publication number: 20180044765
    Abstract: In an example of a method for forming a high-strength, lightweight alloy, starting materials are provided. The starting materials include aluminum, iron, and silicon. The starting materials are ball milled to generate the high-strength, lightweight alloy of a stable AlxFeySiz phase, wherein x ranges from about 3 to about 5, y ranges from about 1.5 to about 2.2, and z is about 1.
    Type: Application
    Filed: August 9, 2016
    Publication date: February 15, 2018
    Inventors: Zhongyi Liu, Frederick E. Pinkerton, Tengjiao Qi
  • Publication number: 20170330684
    Abstract: A method of fabricating a curvilinear magnet includes forming at least one slot in a material billet. The slotted material billet is inserted into a mold having a curvilinear pocket. The mold is closed around the slotted material billet such that the slotted material billet conforms to the curvilinear pocket and forms a curvilinear billet. The curvilinear billet is arranged in a structure. The curvilinear billet arranged in the structure is then magnetized.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 16, 2017
    Inventors: Michael P. Balogh, Frederick E. Pinkerton, Anil Singh Bika, Ingrid A. Rousseau
  • Publication number: 20170125163
    Abstract: A method for fabricating a non-planar magnet includes extruding a precursor material including neodymium iron boron crystalline grains into an original anisotropic neodymium iron boron permanent magnet having an original shape, wherein the original anisotropic neodymium iron boron permanent magnet has at least about 90 percent neodymium iron boron magnetic material by volume. The original anisotropic neodymium iron boron permanent magnet is heated to a deformation temperature. The original anisotropic neodymium iron boron permanent magnet is deformed into a reshaped anisotropic neodymium iron boron permanent magnet having a second shape substantially different from the original shape using heated tooling to apply a deformation load to the original anisotropic neodymium iron boron permanent magnet.
    Type: Application
    Filed: October 11, 2016
    Publication date: May 4, 2017
    Inventors: Frederick E. Pinkerton, Anil K. Sachdev
  • Publication number: 20170062106
    Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 2, 2017
    Inventors: Chen Zhou, Frederick E. Pinkerton
  • Patent number: 9548150
    Abstract: New magnetic materials containing cerium, iron, and small additions of a third element are disclosed. These materials comprise compounds Ce(Fe12?xMx) where x=1-4, having the ThMn12 tetragonal crystal structure (space group I4/mmm, #139). Compounds with M=B, Al, Si, P, S, Sc, Co, Ni, Zn, Ga, Ge, Zr, Nb, Hf, Ta, and W are identified theoretically, and one class of compounds based on M=Si has been synthesized. The Si cognates are characterized by large magnetic moments (4?Ms greater than 1.27 Tesla) and high Curie temperatures (264?Tc?305° C.). The Ce(Fe12?xMx) compound may contain one or more of Ti, V, Cr, and Mo in combination with an M element. Further enhancement in Tc is obtained by nitriding the Ce compounds through heat treatment in N2 gas while retaining the ThMn12 tetragonal crystal structure; for example CeFe10Si2N1.29 has Tc=426° C.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: January 17, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Chen Zhou, Frederick E. Pinkerton, Jan F. Herbst
  • Patent number: 9540738
    Abstract: Both the reaction of hydride-forming compositions with hydrogen to form hydrides, and the decomposition of such hydrides to release hydrogen may be promoted electrochemically. These reactions may be conducted reversibly, and if performed in a suitable cell, the cell will serve as a hydrogen storage and release device.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: January 10, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: John J. Vajo, Wen Li, Ping Liu, Frederick E. Pinkerton
  • Publication number: 20160308405
    Abstract: An electric motor is provided for use in an electromechanical transmission that utilizes automatic transmission fluid. The electric motor includes a stator and a rotor. The rotor includes a plurality of permanent magnets can include magnetic particles coated with hydrogen impermeable material. According to an alternative embodiment, the entire permanent magnet or the rotor itself can be coated with hydrogen impermeable material. According to a further alternative embodiment, the permanent magnet particles can be secured by a binder that includes a hydrogen storage compound that prevents hydrogen from affecting magnetic properties of the permanent magnet.
    Type: Application
    Filed: March 8, 2016
    Publication date: October 20, 2016
    Inventors: Margarita P. THOMPSON, Frederick E. PINKERTON, Michael P. BALOGH, Gayatri Vyas DADHEECH, Xiaoqing ZENG
  • Patent number: 9145296
    Abstract: A method is disclosed for storing and releasing hydrogen from a mass of transition metal borohydride particles, or a mass of mixed, transition metal and alkali metal-containing, borohydride particles where hydrogen is to be released by heating the mass of particles upon a demand for hydrogen in a hydrogen-using application. Particles of a metal hydride are mixed with the metal borohydride particles to form a mass of hydrogen storage particles. The composition and amount of the metal hydride mixed into the hydrogen storage particles serves to react with boron from the borohydride particles to form a metal boride and to suppress release of diborane as hydrogen is released from the heated metal borohydride particles.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: September 29, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Frederick E. Pinkerton