Patents by Inventor Robin K. Churchill

Robin K. Churchill 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).

  • Patent number: 11952742
    Abstract: A cast lip for an excavating bucket composed of a ferrous alloy having at least seven percent chromium by weight, 3%-6% nickel by weight, and ?0.12% carbon by weight, and a primarily martensitic structure.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 9, 2024
    Assignee: ESCO GROUP LLC
    Inventors: Robin K. Churchill, Michael B. Roska, Ulf Daniel Widlund
  • Publication number: 20200308804
    Abstract: A cast lip for an excavating bucket composed of a ferrous alloy having at least seven percent chromium by weight, 3%-6% nickel by weight, and ?0.12% carbon by weight, and a primarily martensitic structure.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: ESCO Group LLC
    Inventors: Robin K. Churchill, Michael B. Roska, Ulf Daniel Widlund
  • Publication number: 20200270727
    Abstract: A hardfaced product includes a substrate and a hard composite material bonded to the substrate. The composite material includes boron carbide as a wear-resistant material and a matrix alloy including manganese and at least one of copper, silver, gold, platinum or palladium. The hardfaced product can be made by applying a molten matrix alloy to a substrate wherein the matrix alloy is combined with a wear-resistant material. The matrix alloy includes manganese and at least one of copper, silver, gold, platinum or palladium. The wear-resistant material includes boron carbide.
    Type: Application
    Filed: July 19, 2018
    Publication date: August 27, 2020
    Inventor: Robin K. Churchill
  • Patent number: 10730104
    Abstract: An article, such as a hardfaced wearpart, includes a substrate, a sheet metal shell connected to the substrate to define a cavity between the surface of the substrate and the shell, and a composite material filling the cavity and forming a coating on at least a portion of the surface of the substrate, the composite material including a hard particulate material infiltrated with a metallic brazing material. The shell may be connected to the substrate by welding or brazing to the substrate, and may wear away during use. The shell and the substrate may be used as part of an assembly for producing the article, where the shell is used as a mold for forming the composite material by filling the shell with the hard particulate material and subsequently infiltrating with the brazing material.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: August 4, 2020
    Assignee: ESCO GROUP LLC
    Inventor: Robin K. Churchill
  • Publication number: 20170239716
    Abstract: An article, such as a hardfaced wearpart, includes a substrate, a sheet metal shell connected to the substrate to define a cavity between the surface of the substrate and the shell, and a composite material filling the cavity and forming a coating on at least a portion of the surface of the substrate, the composite material including a hard particulate material infiltrated with a metallic brazing material. The shell may be connected to the substrate by welding or brazing to the substrate, and may wear away during use. The shell and the substrate may be used as part of an assembly for producing the article, where the shell is used as a mold for forming the composite material by filling the shell with the hard particulate material and subsequently infiltrating with the brazing material.
    Type: Application
    Filed: January 4, 2017
    Publication date: August 24, 2017
    Inventor: Robin K. Churchill
  • Patent number: 9115742
    Abstract: Improved connection systems for pinned connections are disclosed. Although the connection systems may be utilized in dragline excavating systems, the connection systems may also be utilized for pinned connections in a variety of other types of mining, dredging, forestry, and construction equipment. An insert utilized in the connections systems has a frustroconical shape that joins with an aperture in an element being joined by the connection system.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: August 25, 2015
    Assignee: ESCO Corporation
    Inventors: Robert McClanahan, Carolyn Shapiro, Robin K Churchill
  • Publication number: 20130280012
    Abstract: Improved connection systems for pinned connections are disclosed. Although the connection systems may be utilized in dragline excavating systems, the connection systems may also be utilized for pinned connections in a variety of other types of mining, dredging, forestry, and construction equipment. An insert utilized in the connections systems has a frustroconical shape that joins with an aperture in an element being joined by the connection system.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Inventors: Robert McClanahan, Carolyn Shapiro, Robin K. Churchill
  • Patent number: 8469622
    Abstract: Improved connection systems for pinned connections are disclosed. Although the connection systems may be utilized in dragline excavating systems, the connection systems may also be utilized for pinned connections in a variety of other types of mining, dredging, forestry, and construction equipment. An insert utilized in the connections systems has a frustroconical shape that joins with an aperture in an element being joined by the connection system.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: June 25, 2013
    Assignee: ESCO Corporation
    Inventors: Robert McClanahan, Carolyn Shapiro, Robin K Churchill
  • Publication number: 20090136291
    Abstract: Improved connection systems for pinned connections are disclosed Although the connection systems may be utilized in dragline excavating systems, the connection systems may also be utilized for pinned connections in a variety of other types of mining, dredging, forestry, and construction equipment. An insert utilized in the connections systems has a frustroconical shape that joins with an aperture in an element being joined by the connection system.
    Type: Application
    Filed: November 18, 2008
    Publication date: May 28, 2009
    Applicant: ESCO Corporation
    Inventors: Robert McClanahan, Carolyn Shapiro, Robin K. Churchill
  • Patent number: 4715908
    Abstract: A method of making a duplex stainless steel is provided for an alloy having the following composition:______________________________________ Carbon 0.001 to 0.08 Wt. % Manganese 0.001 to 2.00 Wt. % Silicon 0.001 to 1.50 Wt. % Chromium 20.00 to 27.50 Wt. % Nickel 8.00 to 11.00 Wt. % Molybdenum 3.00 to 4.50 Wt. % Sulfur 0.0001 to 0.050 Wt. % Phosphorus 0.0001 to 0.050 Wt. % Nitrogen 0.10 to 0.30 Wt. % Iron Balance ______________________________________by selecting a heat treating temperature in the range of about 2050.degree. F. to about 2350.degree. F. to provide a desired impact toughness and a desired yield strength.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: December 29, 1987
    Assignee: ESCO Corporation
    Inventor: Robin K. Churchill