Patents by Inventor Thomas Marshall Congdon

Thomas Marshall Congdon 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: 11926989
    Abstract: A blade assembly includes an adapter board including a lower tool bit attachment portion, terminating in a lower adapter board free end, the lower adapter board free end defining a bottom surface defining a plurality of shank receiving bores. A plurality of bushings are disposed in a corresponding one of the plurality of shank receiving bores.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: March 12, 2024
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon, Tobias James Toennies
  • Patent number: 11885098
    Abstract: A wear member comprises a shank portion defining a longitudinal axis, a free end and a perimeter, at least one flat surface on the perimeter extending to the free end and a cross-hole defining a cross-hole axis along which the cross-hole extends through the at least one flat surface perpendicularly, and a wear portion extending downwardly axially from the shank portion, the wear portion including a polygonal configuration.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: January 30, 2024
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Publication number: 20230383504
    Abstract: An orientation plate comprises a rectangular body defining a top surface, a bottom surface, a front surface, a back surface, a first end surface, a second end surface, and a thickness that is the minimum dimension of the body, and a plurality of apertures extending through the thickness of the body, each aperture defining a perimeter having at least one orientation flat.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 30, 2023
    Inventors: David Bruno PARZYNSKI, JR., Thomas Marshall CONGDON
  • Publication number: 20230340762
    Abstract: A spring clip defines an axis of movement, and includes a handle portion disposed at a first end along the axis of movement, and a tool bit engaging portion disposed at a second end along the axis of movement. Also, an adapter board engaging portion is disposed at least partially between the handle portion, and the tool bit engaging portion along the axis of movement.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 26, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon, Corey Michael Wells
  • Publication number: 20230340760
    Abstract: A retaining spring clip includes an elongated body defining a longitudinal direction, a lateral direction that is perpendicular to the longitudinal direction, and a transverse direction that is perpendicular to the lateral direction and the longitudinal direction. A handle is disposed proximate to a first longitudinal end, an intermediate spring is disposed along the longitudinal direction, and a stepped groove is disposed proximate to a second longitudinal end. A triangular shaped void forms a backside of the intermediate spring, and a void filler is disposed in the triangular shaped void.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 26, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
  • Publication number: 20230340754
    Abstract: A tool bit includes a working portion, and a shank portion defining a shank free end. The working portion includes a pair of side inserts, and a front insert.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 26, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Publication number: 20230340761
    Abstract: A tapered bushing includes a conical inner surface defining a conical axis, and a radial direction. The tapered bushing further includes an outer surface of revolution, and defines a minimum radial wall thickness that ranges from 3.0 mm to 15.0 mm measured from the conical inner surface to the outer surface of revolution. Also, the conical inner surface defines a draft angle that ranges from 2.0 degrees to 30.0 degrees.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 26, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
  • Publication number: 20230340753
    Abstract: An adapter board has an upper moldboard interfacing portion including a rear flat surface, a front surface, and a plurality of retaining spring clip receiving apertures extending from the front surface to the rear flat surface. A lower tool bit attachment portion of the adapter board terminates in a lower adapter board free end defining a bottom surface that defines a plurality of shank receiving bores. Each one of the plurality of shank receiving bores is in communication with one of the plurality of retaining spring clip receiving apertures.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 26, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
  • Publication number: 20230332382
    Abstract: A wear member includes an attachment portion, and a wear portion extending from the attachment portion that defines a wear surface. The wear portion has a dispersible wear indicator that is disposed in the wear portion, and that is spaced a predetermined distance away from the wear surface.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 19, 2023
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon, Benjamin Thomas Schafer
  • Patent number: 11788251
    Abstract: An adapter board defines an upper adapter board attachment portion, and a lower tool bit attachment portion. The upper adapter board attachment portion includes a first peak surface and a second peak surface, the first peak surface and the second peak surface forming a first valley between the first peak surface and the second peak surface.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: October 17, 2023
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon, Susan Marie Graham
  • Patent number: 11781293
    Abstract: A work tool or a wear member includes a working portion or a wear portion, and a shank extending from the working portion or the wear portion, defining a longitudinal axis, and a first lock receiving groove that defines an axis of rotation that is perpendicular to the longitudinal axis of the shank.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: October 10, 2023
    Assignee: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas Marshall Congdon
  • Patent number: 11746507
    Abstract: A cutter bit for a work tool on a machine includes a leading end, conical-shaped tip portion, a rearward, frustoconical-shaped tip portion extending axially rearwardly from the leading end, conical-shaped tip portion, an annular ledge extending radially outwardly from a trailing edge of the rearward, frustoconical-shaped tip portion, a frustoconical-shaped body portion extending axially rearwardly from an outer circumferential edge of the annular ledge, a cylindrical collar portion extending axially rearwardly from a trailing edge of the frustoconical-shaped body portion, and a trailing end, cylindrical-shaped shank portion extending axially rearwardly from the cylindrical collar portion. The cutter bit may also include a plurality of circumferentially-spaced ribs projecting radially outwardly from an outer peripheral surface of at least one of the leading end, conical-shaped tip portion, the rearward, frustoconical-shaped tip portion, or the frustoconical-shaped body portion.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: September 5, 2023
    Assignee: Caterpillar Inc.
    Inventors: Thomas Marshall Congdon, David Bruno Parzynski, Jr., Nathan R. Bjerke
  • Patent number: 11732445
    Abstract: A tool bit includes a shank portion defining a longitudinal axis, a free end, and a perimeter, at least one anti-rotation feature on the perimeter extending to the free end, and a cross-hole defining a cross-hole axis along which the cross-hole extends through the shank portion. The tool bit also including a working portion extending downwardly axially from the shank portion. The working portion includes a rear region, a front working region defining a width with a midpoint, a first side region and a second side region. The first side region and the second side region define an angle of extension measured in a plane perpendicular to the longitudinal axis. The cross-hole axis pass through the width of the front working region when projected onto a plane perpendicular to the longitudinal axis.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: August 22, 2023
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Patent number: 11725362
    Abstract: A wear member configured to be attached to a work implement includes a body defining a front working region, a rear mounting region, a first side region connecting the front working region to the rear mounting region, and a second side region connecting the front working region to the rear mounting region. The rear mounting region includes a plurality of mounting pads and defines at least once recess disposed at least partially on at least one of the plurality of the mounting pads.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: August 15, 2023
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon
  • Patent number: 11619031
    Abstract: A tool bit includes a threaded portion, a shank, a shoulder, an anti-rotation segment and a working portion. The threaded portion may be centered about and extend longitudinally along a first axis. The shank may be centered about the first axis and extend longitudinally along the first axis. The shank may be disposed between the threaded portion and the shoulder. The anti-rotation segment may be disposed between the shoulder and the working portion of the tool bit. The working portion may be oriented to extend lengthwise away from the first axis and to extend lengthwise along another axis that is transverse to the first axis. The working portion may include a planar cutting surface that includes a working edge. The planar cutting surface may be oriented transverse to the first axis.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 4, 2023
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Patent number: 11566655
    Abstract: A bolt retainer, to position a bolt within a bolt receiving element of a component, is disclosed. The bolt retainer may include a tube structure. The bolt retainer may further include bolt engaging elements that extend from an inner surface of the tube structure to engage with the bolt. The bolt retainer may additionally include component engaging elements that extend from an outer surface of the tube structure to engage with the component.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: January 31, 2023
    Assignee: Caterpillar Inc.
    Inventors: Thomas Marshall Congdon, Nathan Bjerke
  • Patent number: 11512456
    Abstract: A tool bit comprises a shank portion defining a longitudinal axis; and a working portion. The working portion includes at least a first arcuate surface disposed longitudinally adjacent the shank portion.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: November 29, 2022
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Patent number: D976966
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: January 31, 2023
    Assignee: Caterpillar Inc.
    Inventors: David Parzynski, Thomas Marshall Congdon
  • Patent number: D991986
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: July 11, 2023
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon
  • Patent number: D1018602
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: March 19, 2024
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon