Patents by Inventor Nathan R. BJERKE

Nathan R. BJERKE 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: 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
  • Publication number: 20210230845
    Abstract: A bolt retention assembly defines a horizontal direction, a vertical direction, and a lateral direction that is perpendicular to the vertical direction and the horizontal direction. The bolt retention assembly includes an adapter including a forward abutment portion and a rearward horizontally oriented saddle portion. The adapter may also define an interior aperture. The bolt retention assembly further includes a slide including a forward threaded portion configured to fit within the interior aperture of the adapter, and a rearward horizontally oriented pronged portion configured to pass through the rearward horizontally oriented saddle portion of the adapter.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 29, 2021
    Applicant: Caterpillar Inc.
    Inventor: Nathan R. Bjerke
  • Patent number: 10947704
    Abstract: A bolt retention assembly defines a horizontal direction, a vertical direction, and a lateral direction that is perpendicular to the vertical direction and the horizontal direction. The bolt retention assembly includes an adapter including a forward abutment portion and a rearward horizontally oriented saddle portion. The adapter may also define an interior aperture. The bolt retention assembly further includes a slide including a forward threaded portion configured to fit within the interior aperture of the adapter, and a rearward vertically oriented cradle portion configured to receive the rearward horizontally oriented saddle portion of the adapter.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 16, 2021
    Assignee: Caterpillar Inc.
    Inventor: Nathan R. Bjerke
  • Publication number: 20200157938
    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: November 15, 2018
    Publication date: May 21, 2020
    Applicant: CATERPILLAR INC.
    Inventors: Thomas Marshall CONGDON, David Bruno PARZYNSKI, JR., Nathan R. BJERKE
  • Publication number: 20200157782
    Abstract: A bolt retention assembly defines a horizontal direction, a vertical direction, and a lateral direction that is perpendicular to the vertical direction and the horizontal direction. The bolt retention assembly includes an adapter including a forward abutment portion and a rearward horizontally oriented saddle portion. The adapter may also define an interior aperture. The bolt retention assembly further includes a slide including a forward threaded portion configured to fit within the interior aperture of the adapter, and a rearward vertically oriented cradle portion configured to receive the rearward horizontally oriented saddle portion of the adapter.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 21, 2020
    Applicant: Caterpillar Inc.
    Inventor: Nathan R. Bjerke
  • Patent number: 9938695
    Abstract: A shroud for a work tool is disclosed. The shroud may have a tip portion. The tip portion may have a tip extending from a shroud proximal end to a tip end disposed between the shroud proximal end and a shroud distal end. The tip portion may further have an upper leg extending from the tip end to an upper leg distal end. The tip portion may also have a lower leg extending from the tip end to a lower leg distal end. The lower leg may be spaced apart from the upper leg to form an opening between the upper leg and the lower leg. The shroud may have an attachment portion attached to the upper leg. The attachment portion may extend from adjacent the tip end to the shroud distal end.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: April 10, 2018
    Assignee: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas M. Congdon
  • Patent number: 9909285
    Abstract: A shroud retention system for a work tool is disclosed. The shroud retention system may have an adapter attached to the work tool. The shroud retention system may further have a spring assembly attached to the adapter. The shroud retention system may also have a shroud, which may have a channel configured to slidably receive the adapter and the spring assembly. The channel may have a retainer slot. The shroud retention system may have a retainer plate disposed in the retainer slot. The retainer plate may be movable into a locked position by the spring assembly.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: March 6, 2018
    Assignee: Caterpillar Inc.
    Inventors: Nathan R. Bjerke, Thomas M. Congdon
  • Publication number: 20170073938
    Abstract: A shroud retention system for a work tool is disclosed. The shroud retention system may have an adapter attached to the work tool. The shroud retention system may further have a spring assembly attached to the adapter. The shroud retention system may also have a shroud, which may have a channel configured to slidably receive the adapter and the spring assembly. The channel may have a retainer slot. The shroud retention system may have a retainer plate disposed in the retainer slot. The retainer plate may be movable into a locked position by the spring assembly.
    Type: Application
    Filed: May 2, 2016
    Publication date: March 16, 2017
    Applicant: Caterpillar Inc.
    Inventors: Nathan R. BJERKE, Thomas M. CONGDON
  • Publication number: 20170073939
    Abstract: A shroud for a work tool is disclosed. The shroud may have a tip portion. The tip portion may have a tip extending from a shroud proximal end to a tip end disposed between the shroud proximal end and a shroud distal end. The tip portion may further have an upper leg extending from the tip end to an upper leg distal end. The tip portion may also have a lower leg extending from the tip end to a lower leg distal end. The lower leg may be spaced apart from the upper leg to form an opening between the upper leg and the lower leg. The shroud may have an attachment portion attached to the upper leg. The attachment portion may extend from adjacent the tip end to the shroud distal end.
    Type: Application
    Filed: May 2, 2016
    Publication date: March 16, 2017
    Applicant: Caterpillar Inc.
    Inventors: Nathan R. BJERKE, Thomas M. CONGDON