Patents by Inventor David B. Parzynski

David B. Parzynski 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: 20240383051
    Abstract: A cutting bit assembly for attachment to a tool holder of a milling-type machine includes a cutting tip, a generally cylindrical shank extending from the cutting tip and comprising a rotation-limiting surface, and a spring clip surrounding a body of the shank. The spring clip includes a protrusion configured to interact with the rotation-limiting surface of the shank to limit rotation of the shank relative to the spring clip. The spring clip includes a contracted configuration and an expanded configuration, and in both the contracted configuration and the expanded configuration the protrusion interacts with the rotation-limiting surface.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 21, 2024
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Ronald D. MILLS, David CASTILLO, Jeff RHODE, Nicholas B. JOHNSON, Christopher BARNARD, Robert CARR, David B. PARZYNSKI, JR.
  • Publication number: 20240384653
    Abstract: A cutting bit assembly for attachment to a tool holder of a milling-type machine, including a cutting tip, a generally cylindrical shank extending from the cutting tip, a spring clip surrounding a body of the shank and including a contracted configuration and an expanded configuration, and a washer having an installed configuration in which the washer is disposed on a shoulder of the shank and an uninstalled configuration in which the washer surrounds the spring clip and retains the spring clip in the contracted configuration. At least one of a distal edge of the spring clip or a proximal edge of a bore of the washer comprises a bevel or radius.
    Type: Application
    Filed: August 28, 2023
    Publication date: November 21, 2024
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Christopher BARNARD, Jeff RHODE, David CASTILLO, David B. PARZYNSKI, Jr., Robert CARR, Nicholas B. JOHNSON
  • Patent number: 11746506
    Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: September 5, 2023
    Assignee: Caterpillar Inc.
    Inventors: David B. Parzynski, Thomas M. Congdon
  • Patent number: 11459736
    Abstract: A cutting edge for a machine. The cutting edge includes a top side and a bottom side opposite the top side. The cutting edge includes insert apertures along the bottom side. The insert apertures shaped to receive inserts made of harder material than the majority of the cutting edge.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: October 4, 2022
    Assignee: Caterpillar Inc.
    Inventors: David B. Parzynski, Jr., Thomas M. Congdon
  • 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: 20210355658
    Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Applicant: Caterpillar Inc.
    Inventors: David B. PARZYNSKI, Thomas M. CONGDON
  • Patent number: 11149416
    Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: October 19, 2021
    Assignee: Caterpillar Inc.
    Inventors: David B. Parzynski, Thomas M. Congdon
  • Publication number: 20210301503
    Abstract: A cutting edge for a machine. The cutting edge includes a top side and a bottom side opposite the top side. The cutting edge includes insert apertures along the bottom side. The insert apertures shaped to receive inserts made of harder material than the majority of the cutting edge.
    Type: Application
    Filed: March 24, 2020
    Publication date: September 30, 2021
    Applicant: Caterpillar Inc.
    Inventors: David B. Parzynski, JR., Thomas M. Congdon
  • Publication number: 20210087778
    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: September 23, 2019
    Publication date: March 25, 2021
    Applicant: Caterpillar Inc.
    Inventors: David B. PARZYNSKI, JR., Thomas Marshall CONGDON, George MASKA
  • Publication number: 20200157781
    Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Applicant: Caterpillar Inc.
    Inventors: David B. PARZYNSKI, Thomas M. CONGDON
  • Publication number: 20200141094
    Abstract: A cutting tool assembly is disclosed. The cutting tool assembly may have an adapter board, which may have at least one bore, extending from a proximal end to a distal end. The assembly may also have a cutting tool, having an elongated tool body. At least a portion of the tool body may be disposed within the bore. The tool body may have an annular channel on the tool body adjacent the distal end of the bore. The assembly may have a spring clip, having a generally hollow cylindrical sleeve, circumscribing at least a portion of the tool body within the bore. The spring clip may also have a flange attached to and extending radially outward from the sleeve. The spring clip may also have a circumferential rib extending radially inward from the sleeve. The circumferential rib may be configured to engage with the annular channel within the bore.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 7, 2020
    Applicant: CATERPILLAR INC.
    Inventors: David B. PARZYNSKI, JR., Thomas M. CONGDON, Brian Thomas RIMMEY
  • Patent number: 10590632
    Abstract: A system for use in securing bits against rotation in a motor grader may include a bit, with the bit having a shank. The shank may include a locking portion. The system may include an adapter board including a hole configured to receive the shank of the bit. The system may also include an anti-rotation plate configured to engage the locking portion of the shank of the bit such that the anti-rotation plate constrains the bit against rotation with respect to the adapter board.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 17, 2020
    Assignee: Caterpillar Inc.
    Inventors: David B. Parzynski, Thomas M. Congdon
  • Publication number: 20180195255
    Abstract: The present system is disclosed for use in securing bits against rotation in a motor grader. The bit securing system has at least two bits, and each bit has a respective shank. Each shank has a respective locking portion. An adapter board has at least two holes, and each respective hole is configured to receive a respective shank of a bit. An anti-rotation plate is configured to engage the respective locking portions of the shanks of the bits such that the anti-rotation plate constrains the bits against rotation with respect to the adapter board.
    Type: Application
    Filed: January 8, 2018
    Publication date: July 12, 2018
    Applicant: Caterpillar Inc.
    Inventors: David B. Parzynski, Thomas M. Congdon
  • Patent number: D920401
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 25, 2021
    Assignee: Caterpillar Inc.
    Inventors: Thomas M. Congdon, David B. Parzynski, Jr., Nathan Bjerke
  • Patent number: D938999
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: December 21, 2021
    Assignee: Caterpillar Inc.
    Inventors: Thomas M. Congdon, David B. Parzynski, Jr., Nathan Bjerke
  • Patent number: D963718
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: September 13, 2022
    Assignee: Caterpillar Inc.
    Inventors: Thomas M. Congdon, David B. Parzynski, Jr., Nathan Bjerke
  • Patent number: D1040868
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: September 3, 2024
    Assignee: Caterpillar Inc.
    Inventors: William Jay Ulrich, IV, Eric Thomas Sinn, Corey M. Wells, Brandon H. McCaffrey, Doug Serrurier, David B. Parzynski, Jr.