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    Drafted tool bit and blade assembly
    2.
    发明授权
    Drafted tool bit and blade assembly 有权

    公开(公告)号：US10889966B2

    公开(公告)日：2021-01-12

    申请号：US15952955

    申请日：2018-04-13

    Applicant: Caterpillar Inc.

    Inventor： David Bruno Parzynski, Jr. ,  Thomas Marshall Congdon

    IPC: E02F9/28 ,  E02F3/815

    Abstract: A tool bit comprises a shank portion defining a longitudinal axis, and a working portion extending downwardly axially from the shank portion. The working portion includes a rear region, a front working region, a first side region and a second side region, and the first side region and the second side region define an angle of extension measured in a plane perpendicular to the longitudinal axis, forming a wider front working region than the rear region in a plane perpendicular to the longitudinal axis.

    Retention system for motor grader bits
    3.
    发明授权
    Retention system for motor grader bits 有权

    公开(公告)号：US10851523B2

    公开(公告)日：2020-12-01

    申请号：US16180958

    申请日：2018-11-05

    Applicant: Caterpillar Inc.

    Inventor： David Bruno Parzynski, Jr. ,  Thomas Marshall Congdon

    IPC: E02F9/28

    Abstract: A tool bit is disclosed. The tool bit includes a working portion at a distal end of the tool bit, a threaded portion at a proximal end of the tool bit, a shank extending along a longitudinal axis of the tool bit between the working portion and the threaded portion, and an anti-rotation receiving hole located on the threaded portion. The anti-rotation receiving hole extends through the threaded portion transverse to the longitudinal axis. The threaded portion of the tool bit is configured to engage with threads of a nut, and the anti-rotation receiving hole is configured to receive a pin inserted through the nut.

    Scarifier board for motor graders
    6.
    发明授权
    Scarifier board for motor graders 有权

    公开(公告)号：US10125471B2

    公开(公告)日：2018-11-13

    申请号：US15380402

    申请日：2016-12-15

    Applicant: Caterpillar Inc.

    Inventor： Thomas Marshall Congdon ,  David Bruno Parzynski, Jr.

    IPC: E02F3/815 ,  A01B35/26 ,  E02F3/76

    Abstract: A scarifier board comprises a rectangular attachment portion defining a width, a height and a thickness and the attachment portion includes a front face and a back face, and a first plurality of mounting apertures extend through the front face and the back face. The board also includes a working portion defining a plurality of anti-rotation grooves and a plurality of working zones therebetween having a wear resistant material, and the working portion includes a strip of wear resistant material disposed immediately below the attachment portion.

    Retention system for motor grader bits
    8.
    发明授权
    Retention system for motor grader bits 有权

    公开(公告)号：US11619031B2

    公开(公告)日：2023-04-04

    申请号：US17070698

    申请日：2020-10-14

    Applicant: Caterpillar Inc.

    Inventor： David Bruno Parzynski, Jr. ,  Thomas Marshall Congdon

    IPC: E02F9/28

    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.

    Adapter board bolted joint surface
    10.
    发明授权
    Adapter board bolted joint surface 有权

    公开(公告)号：US10889959B2

    公开(公告)日：2021-01-12

    申请号：US15952421

    申请日：2018-04-13

    Applicant: Caterpillar Inc.

    Inventor： David Bruno Parzynski, Jr. ,  Thomas Marshall Congdon ,  Susan Marie Graham

    IPC: E02F3/815

    Abstract: A blade assembly comprises a moldboard defining an upper moldboard free end and a lower moldboard free end, the lower moldboard free end defining a lower curved mounting surface, and an adapter board defining an upper adapter board attachment portion, and a lower tool bit attachment portion. The upper adapter board attachment portion may include a first peak surface and a second peak surface, the first peak surface and the second peak surface forming a first valley therebetween and being configured to contact the lower curved mounting surface.

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