Patents by Inventor Robert J. PICKERILL

Robert J. PICKERILL 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).

  • Carburized steel component and carburization process
    Patent number: 12098466
    Abstract: A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: September 24, 2024
    Assignee: Caterpillar Inc.
    Inventors: Michael A. Pershing, Curtis A. Henning, Robert J. Pickerill, Scott A. Johnston
  • CARBURIZED STEEL COMPONENT AND CARBURIZATION PROCESS
    Publication number: 20230220532
    Abstract: A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 13, 2023
    Applicant: Caterpillar Inc.
    Inventors: Michael A. PERSHING, Curtis A. HENNING, Robert J. PICKERILL, Scott A. JOHNSTON
  • Carburized steel component and carburization process
    Patent number: 11624106
    Abstract: A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 11, 2023
    Assignee: Caterpillar Inc.
    Inventors: Michael A. Pershing, Curtis A. Henning, Robert J. Pickerill, Scott A. Johnston
  • Track assembly bushing having while iron member
    Patent number: 11524733
    Abstract: A bushing for a track assembly, according to one or more embodiments, includes: a tubular bushing substrate having a longitudinal length and an outer surface; and at least one white iron member fixed to the outer surface of the tubular bushing substrate.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 13, 2022
    Assignee: Caterpillar Inc.
    Inventors: Chandrasen R. Rathod, Roger L. Recker, Robert J. Pickerill, Susan M. Graham, Scott Keele, Thomas J. Yaniak
  • CARBURIZED STEEL COMPONENT AND CARBURIZATION PROCESS
    Publication number: 20210292880
    Abstract: A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 23, 2021
    Applicant: Caterpillar Inc.
    Inventors: Michael A. PERSHING, Curtis A. HENNING, Robert J. PICKERILL, Scott A. JOHNSTON
  • TRACK ASSEMBLY BUSHING HAVING WHITE IRON MEMBER
    Publication number: 20210039728
    Abstract: A bushing for a track assembly, according to one or more embodiments, includes: a tubular bushing substrate having a longitudinal length and an outer surface; and at least one white iron member fixed to the outer surface of the tubular bushing substrate.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 11, 2021
    Applicant: Caterpillar Inc.
    Inventors: Chandrasen R. RATHOD, Roger L. RECKER, Robert J. PICKERILL, Susan M. GRAHAM, Scott KEELE, Thomas J. YANIAK