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: 11499283
    Abstract: A wheel guard includes a guard member disposed on a compactor wheel. The guard member has a first side having a first portion and a second portion. The second portion is offset from the first portion such that to define a first stepped recess therein. The guard member has a second side disposed opposite to the first side. The first portion has a first cross-sectional thickness and the second portion has a second cross-sectional thickness such that the second cross-sectional thickness is lesser than the first cross-sectional thickness. The guard member has a first top surface defined by the first portion, and a second top surface defined by the second portion and partially by the first portion. The second top surface is offset from the first top surface such that to define a second stepped recess therein. The wheel guard includes a base plate and a wear pad coupled thereto.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: November 15, 2022
    Assignee: Caterpillar Inc.
    Inventors: Dan Pierce, Jim Dale Angell, Thomas Marshall Congdon
  • Publication number: 20220341133
    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: Application
    Filed: July 6, 2022
    Publication date: October 27, 2022
    Applicant: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas Marshall Congdon
  • Publication number: 20220341125
    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: Application
    Filed: June 28, 2022
    Publication date: October 27, 2022
    Applicant: Caterpillar Inc.
    Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
  • Patent number: 11473273
    Abstract: A tool bit comprises a shank portion including a cylindrical configuration defining a longitudinal axis, a radial direction, and a circumferential direction, and a working portion including a cylindrical configuration that is concentric with the shank portion and a flat bottom surface.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: October 18, 2022
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Patent number: 11414842
    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, 2020
    Date of Patent: August 16, 2022
    Assignee: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas Marshall Congdon
  • Patent number: 11401685
    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: April 13, 2018
    Date of Patent: August 2, 2022
    Assignee: Caterpillar Inc.
    Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
  • Publication number: 20220195550
    Abstract: An example track shoe, cutting edge, or other component of a machine is formed in a heated process, such as hot-rolling followed by air-hardening. The air-hardening process involves cooling the component by flowing air over the component (e.g., air cooling), such that the component is cooled at a controlled rate. During the air-cooling process, such as in the range of about 250° C. to about 1100° C., the component may be machined, such as by shearing, punching, drilling, etc. The machining may form the final shape of the component. As the air-hardening process is completed, and the component approaches room temperature, the component may have at least 5% bainitic crystal composition, and as high as greater than 80% bainitic crystal composition, resulting in relatively high hardness and fracture toughness. The final track shoe may have a hardness between about 40 HRC and 55 HRC.
    Type: Application
    Filed: December 23, 2020
    Publication date: June 23, 2022
    Applicant: Caterpillar Inc.
    Inventors: Matthew Thomas Kiser, Lindsey S. Cavanaugh, Thomas Marshall Congdon, Susan Marie Graham, Tianjun Liu, Mark David Veliz, Thomas John Yaniak
  • Publication number: 20220112683
    Abstract: A cutting edge assembly is disclosed. The cutting edge assembly may include an attachment element configured to be attached to a work tool of a machine, wherein the attachment element is formed from a first metal alloy, and wherein the attachment element includes a plurality of retention structures that extend from an attachment end of the attachment element toward a cutting edge end of the attachment element. The cutting edge assembly may include a wear element configured to form a cutting edge of the work tool, wherein the wear element is formed from a second metal alloy that is different from the first metal alloy, and wherein the wear element is cast over the plurality of retention structures to bond the wear element to the attachment element.
    Type: Application
    Filed: December 22, 2021
    Publication date: April 14, 2022
    Applicant: Caterpillar Inc.
    Inventors: David B. PARZYNSKI, JR., Thomas Marshall CONGDON, George MASKA
  • Patent number: 11236485
    Abstract: A cutting edge assembly is disclosed. The cutting edge assembly may include an attachment element configured to be attached to a work tool of a machine, wherein the attachment element is formed from a first metal alloy, and wherein the attachment element includes a plurality of retention structures that extend from an attachment end of the attachment element toward a cutting edge end of the attachment element. The cutting edge assembly may include a wear element configured to form a cutting edge of the work tool, wherein the wear element is formed from a second metal alloy that is different from the first metal alloy, and wherein the wear element is cast over the plurality of retention structures to bond the wear element to the attachment element.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 1, 2022
    Assignee: Caterpillar Inc.
    Inventors: David B. Parzynski, Jr., Thomas Marshall Congdon, George Maska
  • Publication number: 20220002980
    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: Application
    Filed: July 6, 2020
    Publication date: January 6, 2022
    Applicant: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas Marshall Congdon
  • Patent number: 11174890
    Abstract: A fastener retaining component may comprise a first elongated member. A length of the first elongated member may be greater than a diameter of a fastener receiving element of a component. The fastener retaining component may further comprise a second elongated member. A length of the second elongated member may be greater than the diameter of the fastener receiving element. The fastener retaining component may be configured to be press-fit within the fastener receiving element such that press-fitting the fastener retaining component, within the fastener receiving element, increases a tension in the fastener retaining component to cause the first elongated member and the second elongated member to engage with an inner surface of the fastener receiving element and to retain a fastener within the fastener receiving element.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 16, 2021
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon
  • Publication number: 20210348640
    Abstract: A fastener retaining component may comprise a first elongated member. A length of the first elongated member may be greater than a diameter of a fastener receiving element of a component. The fastener retaining component may further comprise a second elongated member. A length of the second elongated member may be greater than the diameter of the fastener receiving element. The fastener retaining component may be configured to be press-fit within the fastener receiving element such that press-fitting the fastener retaining component, within the fastener receiving element, increases a tension in the fastener retaining component to cause the first elongated member and the second elongated member to engage with an inner surface of the fastener receiving element and to retain a fastener within the fastener receiving element.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 11, 2021
    Applicant: Caterpillar Inc.
    Inventors: Nathan BJERKE, Thomas Marshall CONGDON
  • Publication number: 20210317629
    Abstract: A wheel guard includes a guard member disposed on a compactor wheel. The guard member has a first side having a first portion and a second portion. The second portion is offset from the first portion such that to define a first stepped recess therein. The guard member has a second side disposed opposite to the first side. The first portion has a first cross-sectional thickness and the second portion has a second cross-sectional thickness such that the second cross-sectional thickness is lesser than the first cross-sectional thickness. The guard member has a first top surface defined by the first portion, and a second top surface defined by the second portion and partially by the first portion. The second top surface is offset from the first top surface such that to define a second stepped recess therein. The wheel guard includes a base plate and a wear pad coupled thereto.
    Type: Application
    Filed: April 13, 2020
    Publication date: October 14, 2021
    Applicant: Caterpillar Inc.
    Inventors: Dan Pierce, Jim Dale Angell, Thomas Marshall Congdon
  • Publication number: 20210317741
    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: Application
    Filed: June 22, 2021
    Publication date: October 14, 2021
    Applicant: CATERPILLAR INC.
    Inventors: Thomas Marshall CONGDON, David Bruno PARZYNSKI, JR., Nathan R. BJERKE
  • Publication number: 20210262513
    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: Application
    Filed: February 20, 2020
    Publication date: August 26, 2021
    Applicant: Caterpillar Inc.
    Inventors: Thomas Marshall CONGDON, Nathan BJERKE
  • Patent number: 11098584
    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: November 15, 2018
    Date of Patent: August 24, 2021
    Assignee: Caterpillar Inc.
    Inventors: Thomas Marshall Congdon, David Bruno Parzynski, Jr., Nathan R. Bjerke
  • Patent number: D928849
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: August 24, 2021
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon
  • Patent number: D941887
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: January 25, 2022
    Assignee: Caterpillar Inc.
    Inventors: David Parzynski, Thomas Marshall Congdon
  • Patent number: D952697
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: May 24, 2022
    Assignee: Caterpillar Inc.
    Inventors: Nathan Bjerke, Thomas Marshall Congdon
  • Patent number: D958199
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: July 19, 2022
    Assignee: Caterpillar Inc.
    Inventors: David Parzynski, Thomas Marshall Congdon