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公开(公告)号：US20250154743A1
公开(公告)日：2025-05-15
申请号：US18505808
申请日：2023-11-09
Applicant: Caterpillar Inc.
Inventor： Michael C. Gentle , Ethan M. Tevis , Nathaniel K. Harshman
Abstract: System and method for inhibiting damage to a moldboard of a mobile work machine including a blade pitch sensor, a camera configured to detect the blade cutting edge, and a controller configured to determine a maximum allowable pitch of the blade based upon current width of the cutting edge determined from a camera signal. The controller determines if the current measured pitch is greater than the maximum allowable pitch of the blade based upon characteristics of the mobile work machine and the current width of the cutting edge to prevent damage to the moldboard.
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公开(公告)号：US11230820B2
公开(公告)日：2022-01-25
申请号：US16276314
申请日：2019-02-14
Applicant: Caterpillar Inc.
Inventor： Nathaniel K. Harshman , David L. Cox , Benjamin J. Kovalick , Bruce R. Vahling
Abstract: A grading machine includes a machine body, a grading blade supported by a circle, a drawbar connecting the grading blade and the circle to the machine body, and a circle drive system. The circle drive system includes a circle drive motor and a gear box. The gear box is configured to engage with and rotate the circle relative to the drawbar around a circle axis. The circle drive motor includes an axis of rotation that is perpendicular to the circle axis, and the gear box includes an axis of rotation that is parallel to the circle axis.
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公开(公告)号：US12209385B2
公开(公告)日：2025-01-28
申请号：US17648918
申请日：2022-01-25
Applicant: Caterpillar Inc.
Inventor： Nathaniel K. Harshman , David L. Cox , Benjamin J. Kovalick , Bruce R. Vahling
Abstract: A grading machine includes a machine body, a grading blade supported by a circle, a drawbar connecting the grading blade and the circle to the machine body, and a circle drive system. The circle drive system includes a circle drive motor and a gear box. The gear box is configured to engage with and rotate the circle relative to the drawbar around a circle axis. The circle drive motor includes an axis of rotation that is perpendicular to the circle axis, and the gear box includes an axis of rotation that is parallel to the circle axis.
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公开(公告)号：US11976716B2
公开(公告)日：2024-05-07
申请号：US16557609
申请日：2019-08-30
Applicant: Caterpillar Inc.
Inventor： Nathaniel K. Harshman , Benjamin J. Kovalick , Nikhil Sharma
CPC classification number: F16H57/029 , E02F3/8152 , E02F9/202 , E02F3/764 , E02F3/844
Abstract: Disclosed is a seal assembly for a grading machine. The grading machine may include a machine body, a blade assembly, and a circle assembly supporting the blade assembly. The circle assembly may include a circle having a plurality of gear teeth. The grading machine may also include a drawbar assembly connecting the circle assembly to the machine body. The seal assembly may include a non-metallic seal component extending circumferentially around an inner circumference of the circle assembly for sealing the plurality of gear teeth.
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公开(公告)号：US20180080194A1
公开(公告)日：2018-03-22
申请号：US15271647
申请日：2016-09-21
Applicant: Caterpillar Inc.
Inventor： Sean M. Hayes , Nathaniel K. Harshman , Lingfei Zhang
CPC classification number: E02F3/7636 , E01C19/187
Abstract: A drawbar assembly for a motor grader is provided. The drawbar assembly includes a yoke plate, a backbar, a drawbar tube, and a sleeve. The yoke plate includes a first surface and a second surface. The backbar is attached to the first surface of the yoke plate. The backbar includes a tube facing surface. The drawbar tube includes a first end and a second end. The drawbar tube is attached to the first surface of the yoke plate, defining a clearance between the first end of the drawbar tube and the tube facing surface of the backbar. The sleeve encloses at least a portion of the drawbar tube. The sleeve includes a backbar attachment portion and a yoke attachment portion. The backbar attachment portion is attached to the tube facing surface of the backbar and the yoke attachment portion is attached to the first surface of the yoke plate.
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Patent Agency Ranking
公开(公告)号：US11447927B2
公开(公告)日：2022-09-20
申请号：US16558862
申请日：2019-09-03
Applicant: Caterpillar Inc.
Inventor： Nathaniel K. Harshman , Davida R. Reang , Benjamin J. Kovalick
Abstract: A grading machine includes a machine body, a blade assembly, a circle supporting the blade assembly and including a plurality of teeth, a drawbar assembly connecting the circle to the machine body, and a cover plate coupled to a bottom portion of the drawbar assembly. The drawbar assembly includes a plurality of blocks, and the cover plate is configured to be coupled to the drawbar assembly via the plurality of blocks.
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公开(公告)号：US20210102355A1
公开(公告)日：2021-04-08
申请号：US16591872
申请日：2019-10-03
Applicant: Caterpillar Inc.
Inventor： Benjamin J. Kovalick , Lankesh Kumar Mathur Shanmukappa , Nathaniel K. Harshman , Bruce R. Vahling
Abstract: In accordance with one aspect of the present disclosure a circle drawbar for a motor grader has a drawbar frame having two elongated members, and a circle frame that has a surface defined by an inner and outer diameter. The circle frame has a circle gear located radially inward of the inner diameter, allowing the circle frame to rotatable relative to the drawbar frame around an axis of the circle gear. A platform having a top, bottom, and an edge depends from the drawbar frame and covers the circle gear. A debris remover is connected to the platform and removes debris from surface of the circle frame as the circle frame rotates.
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公开(公告)号：US20210054594A1
公开(公告)日：2021-02-25
申请号：US16545152
申请日：2019-08-20
Applicant: Caterpillar Inc.
Inventor： Benjamin Kovalick , Nathaniel K. Harshman , Lankesh Mathur Shanmukappa , Bruce Raymond Vahling
IPC: E02F3/80 , E02F3/76 , F16J15/3284
Abstract: A sealing assembly for a circle member of a motor grader is provided. The sealing assembly includes a plurality of cover segments disposed adjacent to an inner circumference of the circle member. At least one of the plurality of cover segments defines a gap in association with a component disposed adjacent to the at least one of the plurality of cover segments. The sealing assembly also includes a sealing element removably disposed on the at least one of the plurality of cover segments and extending into the gap. The sealing element is adapted to sealingly engage each of the at least one of the plurality of cover segments and the component.
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公开(公告)号：US20190063021A1
公开(公告)日：2019-02-28
申请号：US15687568
申请日：2017-08-28
Applicant: Caterpillar Inc.
Inventor： Sean Michael Hayes , Benjamin J. Kovalick , David L. Cox , Nathaniel K. Harshman
CPC classification number: E01H5/063 , E01H5/062 , E02F3/7636 , E02F3/8152 , E02F3/8157
Abstract: A work attachment for a motor grader includes a moldboard and a trip edge assembly coupled to the moldboard. The moldboard defines a plurality of first apertures. The trip edge assembly includes a trip edge structure. The trip edge assembly also includes a pivoting mechanism for pivoting a portion of the trip edge assembly in a first direction with respect to the moldboard when the trip edge assembly encounters an object in a drive path of the motor grader. The trip edge assembly further includes a mounting structure defining a plurality of second apertures. The plurality of second apertures are aligned with the plurality of first apertures to receive mechanical fasteners for removably coupling the trip edge assembly with the moldboard.
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公开(公告)号：US20250146250A1
公开(公告)日：2025-05-08
申请号：US18503867
申请日：2023-11-07
Applicant: Caterpillar Inc.
Inventor： Bruce Raymond VAHLING , Nathaniel K. Harshman , Benjamin J. Kovalick
Abstract: A work attachment for a work machine is disclosed. The work attachment has a moldboard that has moldboard apertures and moldboard fasteners along its bottom surface. The work attachment also has a clamp bar having its own set of apertures to receive the moldboard fasteners for attaching the clamp bar to the moldboard. The clamp bar slides around the moldboard fasteners, along a longitudinal axis of the moldboard, from an open position to a closed position to attach a cutting edge to the moldboard.
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