Patents by Inventor David Bruno Parzynski, JR.
David Bruno Parzynski, JR. 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).
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Patent number: 11926989Abstract: 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: GrantFiled: December 3, 2020Date of Patent: March 12, 2024Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon, Tobias James Toennies
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Patent number: 11885098Abstract: 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: GrantFiled: June 28, 2022Date of Patent: January 30, 2024Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Publication number: 20240011257Abstract: A lock assembly for attaching a wear member to a base includes a retaining block with a spring attached to the retaining block that fits into an aperture of the base. A lock pin fits into the aperture of the wear member, and the aperture of the retaining block, retaining the wear member onto the base. The lock pin engages the spring that prevents unintentional rotation of the lock pin so that the lock pin is trapped in the aperture of the wear member, preventing its unintentional removal.Type: ApplicationFiled: June 20, 2023Publication date: January 11, 2024Applicant: Caterpillar Inc.Inventors: Corey Michael Wells, Eric T. Sinn, Brandon Hammig McCaffrey, William Jay Ulrich, IV, David Bruno Parzynski, JR.
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Publication number: 20230383504Abstract: 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: ApplicationFiled: July 7, 2023Publication date: November 30, 2023Inventors: David Bruno PARZYNSKI, JR., Thomas Marshall CONGDON
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Publication number: 20230340754Abstract: 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: ApplicationFiled: April 26, 2022Publication date: October 26, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Publication number: 20230340760Abstract: 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: ApplicationFiled: April 26, 2022Publication date: October 26, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
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Publication number: 20230340762Abstract: 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: ApplicationFiled: April 26, 2022Publication date: October 26, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon, Corey Michael Wells
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Publication number: 20230340753Abstract: 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: ApplicationFiled: April 26, 2022Publication date: October 26, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
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Publication number: 20230340761Abstract: 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: ApplicationFiled: April 26, 2022Publication date: October 26, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
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Publication number: 20230332382Abstract: 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: ApplicationFiled: April 19, 2022Publication date: October 19, 2023Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon, Benjamin Thomas Schafer
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Patent number: 11788251Abstract: 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: GrantFiled: October 22, 2020Date of Patent: October 17, 2023Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon, Susan Marie Graham
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Patent number: 11746507Abstract: 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: GrantFiled: June 22, 2021Date of Patent: September 5, 2023Assignee: Caterpillar Inc.Inventors: Thomas Marshall Congdon, David Bruno Parzynski, Jr., Nathan R. Bjerke
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Patent number: 11732445Abstract: 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: GrantFiled: April 13, 2018Date of Patent: August 22, 2023Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Patent number: 11619031Abstract: 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: GrantFiled: October 14, 2020Date of Patent: April 4, 2023Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Patent number: 11512456Abstract: 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: GrantFiled: April 13, 2018Date of Patent: November 29, 2022Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Publication number: 20220341125Abstract: 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: ApplicationFiled: June 28, 2022Publication date: October 27, 2022Applicant: Caterpillar Inc.Inventors: David Bruno Parzynski, JR., Thomas Marshall Congdon
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Patent number: 11473273Abstract: 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: GrantFiled: April 13, 2018Date of Patent: October 18, 2022Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Patent number: 11401685Abstract: 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: GrantFiled: April 13, 2018Date of Patent: August 2, 2022Assignee: Caterpillar Inc.Inventors: David Bruno Parzynski, Jr., Thomas Marshall Congdon
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Publication number: 20210317741Abstract: 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: ApplicationFiled: June 22, 2021Publication date: October 14, 2021Applicant: CATERPILLAR INC.Inventors: Thomas Marshall CONGDON, David Bruno PARZYNSKI, JR., Nathan R. BJERKE
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Patent number: 11098584Abstract: 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: GrantFiled: November 15, 2018Date of Patent: August 24, 2021Assignee: Caterpillar Inc.Inventors: Thomas Marshall Congdon, David Bruno Parzynski, Jr., Nathan R. Bjerke