Patents by Inventor Michael Lynn Johnson

Michael Lynn Johnson 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: 20230061370
    Abstract: A method for assisting an operator in operating a machine. The method includes receiving, by a controller, a selection of a task of a plurality of tasks, each task associated with a corresponding movement pattern of the machine; sensing, by a sensor unit, at least one condition of at least one component of the machine associated with the selected task; and determining, by the controller, whether the condition is within a predetermined set of parameters associated with the selected task. In response to determining that the condition is not within the predetermined set of parameters, the method further includes generating, by the controller, an audible or a haptic signal associated with at least one of the condition or the at least one component.
    Type: Application
    Filed: May 2, 2022
    Publication date: March 2, 2023
    Applicant: Caterpillar Inc.
    Inventors: Michael Adam Weber, David Charles Copley, Norval P Thomson, Michael Lynn Johnson, Eric W Cler, Brad Robert Van De Veer
  • Publication number: 20120107644
    Abstract: An apparatus for the heat-treating of a heat-hardenable steel cruciform article having a weld seam includes a heating element to heat the weld seam to a point that an austenitic transformation occurs, and a quenching chamber to cool the weld seam, causing the formation of Martensite and an associated expansion. The quenching is rapid since slow quenching may allow a crystalline phase other than martensite to form. The apparatus may comprise rollers operable to convey the welded cruciform article through the apparatus at a speed such that the weld seam is subjected to heating for a predetermined heat time sufficient to cause a formation of martensite there within, and such that the heated portion reaches the quenching chamber and is quenched to create a substantial amount of martensite, e.g., an amount sufficient to cause expansion of the part.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 3, 2012
    Applicant: CATERPILLAR, INC.
    Inventors: Pingshun Zhao, Howard W. Ludewig, Tao Hong, Fernando Martinez Diez, Michael Lynn Johnson, Kandrap Siddharthbai Patel, Zhaolin Hu, Steven R. Thompson
  • Patent number: 8075714
    Abstract: An apparatus for the heat-treating of a heat-hardenable steel cruciform article having a weld seam includes a heating element to heat the weld seam to a point that an austenitic transformation occurs, and a quenching chamber to cool the weld seam, causing the formation of Martensite and an associated expansion. The quenching is rapid since slow quenching may allow a crystalline phase other than martensite to form. The apparatus may comprise rollers operable to convey the welded cruciform article through the apparatus at a speed such that the weld seam is subjected to heating for a predetermined heat time sufficient to cause a formation of martensite there within, and such that the heated portion reaches the quenching chamber and is quenched to create a substantial amount of martensite, e.g., an amount sufficient to cause expansion of the part.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: December 13, 2011
    Assignee: Caterpillar Inc.
    Inventors: Pingshun Zhao, Howard W. Ludewig, Tao Hong, Fernando Martinez Diez, Michael Lynn Johnson, Kandarp Siddharthbai Patel, Zhaolin Hu, Steven R. Thompson
  • Publication number: 20090183804
    Abstract: An apparatus for the heat-treating of a heat-hardenable steel cruciform article having a weld seam includes a heating element to heat the weld seam to a point that an austenitic transformation occurs, and a quenching chamber to cool the weld seam, causing the formation of Martensite and an associated expansion. The quenching is rapid since slow quenching may allow a crystalline phase other than martensite to form. The apparatus may comprise rollers operable to convey the welded cruciform article through the apparatus at a speed such that the weld seam is subjected to heating for a predetermined heat time sufficient to cause a formation of martensite there within, and such that the heated portion reaches the quenching chamber and is quenched to create a substantial amount of martensite, e.g., an amount sufficient to cause expansion of the part.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 23, 2009
    Applicant: CATERPILLAR INC.
    Inventors: Pingshun Zhao, Howard W. Ludewig, Tao Hong, Fernando Martinez Diez, Michael Lynn Johnson, Kandrap Siddharthbai Patel, Zhaolin Hu, Steven R. Thompson
  • Publication number: 20090158587
    Abstract: A system and method of redimensioning a ferrous object includes applying a localized heat source to a portion of the object and raising the portion to a temperature sufficient to cause a local expansion via the formation of martensite. Subsequently, the object is quenched while in a locally expanded state to cause a selective expansion of the object that persists at room temperature. The object may be cast iron or hardened steel in an embodiment. In a further embodiment, heat is applied via an inductive heater. In an embodiment the method includes machining the object after quenching.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 25, 2009
    Applicant: CATERPILLAR INC.
    Inventors: Marvin Grendel McKimpson, Narendra Pal Singh, Candice A. Lundy, Michael Lynn Johnson