IP Library Granted Patent US 12,566,457
Granted Patent B2
US 12,566,457 · App. 18/650,523 · Granted Mar 3, 2026

Bulk store slope adjustment via traversal incited sediment gravity flow

Inventors: Benjamin H. Johnson (Omaha, NE); Chad E. Johnson (Omaha, NE); Zane Zents (Omaha, NE)
Assignee: Grain Weevil Corporation
B65D88/68B25J9/1664G05D1/0274G05D1/246G05D2105/05
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Quick Facts
Patent No.
US 12,566,457
App. No.
18/650,523
Granted
Mar 3, 2026
Kind
B2
Abstract

A robot comprises an auger-based drive system, a memory, and a processor coupled with the memory and configured to control movement of the robot via the auger-based drive system. The processor obtains a first measurement of an angle of slope of a portion of piled granular material in a bulk store. In response to the first measurement satisfying a first condition, the robot traverses the portion of piled granular material to incite sediment gravity flow in the portion of piled granular material by disruption of viscosity of the portion of piled granular material through agitation of the portion of piled granular material by auger rotation of the auger-based drive system. The processor obtains a second measurement of the angle of slope of the portion of piled granular material. In response to the second measurement satisfying a second condition, the robot ceases traversal of the portion of piled granular material.

Claims (63)

1 . A robot comprising:

a bilateral drive system;

a memory; and

a processor coupled with the memory and configured to:

control movement of the robot via the bilateral drive system;

obtain a first measurement of an angle of slope of a portion of piled granular material in a bulk store;

responsive to the first measurement satisfying a first condition, direct the robot to traverse about atop a surface of the portion of piled granular material to incite sediment gravity flow in the portion of piled granular material by disruption of viscosity of the portion of piled granular material through agitation of the portion of piled granular material by the traversal;

obtain a second measurement of the angle of slope of the portion of piled granular material; and

responsive to the second measurement satisfying a second condition, direct the robot to cease the traversal of the portion of piled granular material.

2 . The robot of claim 1 , wherein the processor is further configured to:

direct the robot to continue the traversal, by the robot, about atop the surface of the portion of piled granular material in response to the second measurement failing to satisfy the second condition.

3 . The robot of claim 1 , wherein the processor is further configured to:

capture, by a sensor of the robot, a measurement of a characteristic of the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

4 . The robot of claim 1 , wherein the processor is further configured to:

capture, by a sensor of the robot, a temperature measurement of the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

5 . The robot of claim 1 , wherein the processor is further configured to:

direct a collection device of the robot to collect a sample from the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

6 . The robot of claim 1 , wherein the processor is configured to obtain the first measurement from a sensor of the robot.

7 . The robot of claim 1 , wherein the processor is configured to direct the traversal about atop the surface of the portion of piled granular material according to a predetermined pattern of movement stored in the memory.

8 . The robot of claim 1 , wherein the processor is configured to direct the traversal about atop the surface of the portion of piled granular material in a patternless manner.

9 . The robot of claim 1 , wherein the processor is configured to direct the traversal about atop the surface of the portion of piled granular material in a dynamically determined manner.

10 . The robot of claim 1 , wherein the first condition is related to a first angle and the second condition is related to a second angle, and wherein the second angle is smaller than the first angle.

11 . The robot of claim 1 , wherein the portion of piled granular material comprises piled grain.

12 . The robot of claim 1 , wherein the portion of piled granular material is selected from the list of granular material consisting of: seeds, sand, rock aggregate, mineral aggregate, sugar, flour, a ground product, and a milled product.

13 . The robot of claim 1 , wherein the robot is free of mechanical coupling with a structure in which the bulk store is contained.

14 . A method of bulk store slope adjustment, the method comprising:

obtaining, by a robot, a first measurement of an angle of slope of a portion of piled granular material in a bulk store, wherein the robot comprises a bilateral drive system;

responsive to the first measurement satisfying a first condition, traversing, by the robot, about atop a surface of the portion of piled granular material to incite sediment gravity flow in the portion of piled granular material by disruption of viscosity of the portion of piled granular material through agitation of the portion of piled granular material by the traversal;

obtaining, by the robot, a second measurement of the angle of slope of the portion of piled granular material; and

responsive to the second measurement satisfying a second condition, ceasing the traversal of the portion of piled granular material.

15 . The method as recited in claim 14 , further comprising:

responsive to the second measurement failing to satisfy the second condition, continuing the traversal, by the robot, about atop the surface of the portion of piled granular material.

16 . The method as recited in claim 14 , further comprising:

capturing, by a sensor of the robot, a measurement of a characteristic of the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

17 . The method as recited in claim 14 , further comprising:

capturing, by a sensor of the robot, a temperature measurement of the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

18 . The method as recited in claim 14 , further comprising:

collecting, by the robot, a sample from the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

19 . The method as recited in claim 14 , wherein the obtaining, by a robot, a first measurement of an angle of slope of a portion of piled granular material in a bulk store comprises:

obtaining the first measurement from a sensor of the robot.

20 . The method as recited in claim 14 , wherein the traversing, by the robot, about atop a surface of the portion of piled granular material comprises:

traversing, by the robot, about atop the surface of the portion of piled granular material in a predetermined pattern.

21 . The method as recited in claim 14 , wherein the traversing, by the robot, about atop a surface of the portion of piled granular material comprises:

traversing, by the robot, about atop the surface of the portion of piled granular material in a patternless manner.

22 . The method as recited in claim 14 , wherein the traversing, by the robot, about atop a surface of the portion of piled granular material comprises:

traversing, by the robot, about atop the surface of the portion of piled granular material in a dynamically determined manner.

23 . The method as recited in claim 14 ,

wherein the piled granular material comprises grain.

24 . The method as recited in claim 14 ,

wherein the piled granular material is selected from the list of granular material consisting of: seeds, sand, rock aggregate, mineral aggregate, sugar, flour, a ground product, and a milled product.

25 . A non-transitory computer readable storage medium comprising instructions embodied thereon which, when executed, cause a processor to perform a method of bulk store slope adjustment, the method comprising:

obtaining, by a robot, a first measurement of an angle of slope of a portion of piled granular material in a bulk store, wherein the robot comprises a bilateral drive system;

responsive to the first measurement satisfying a first condition, directing a traversal, by the robot, about atop a surface of the portion of piled granular material to incite sediment gravity flow in the portion of piled granular material by disruption of viscosity of the portion of piled granular material through agitation of the portion of piled granular material by the traversal;

obtaining, by the robot, a second measurement of the angle of slope of the portion of piled granular material; and

responsive to the second measurement satisfying a second condition, directing cessation of the traversal of the portion of piled granular material.

26 . The non-transitory computer readable storage medium of claim 25 , wherein the method further comprises:

responsive to the second measurement failing to satisfy the second condition, directing continuation of the traversal, by the robot, about atop the surface of the portion of piled granular material.

27 . The non-transitory computer readable storage medium of claim 25 , wherein the method further comprises:

capturing, by a sensor of the robot, a measurement of a characteristic of the portion of piled granular material during the traversal about atop the surface of the portion of piled granular material.

28 . The non-transitory computer readable storage medium of claim 25 , wherein

the piled granular material comprises grain.

29 . The non-transitory computer readable storage medium of claim 25 , wherein

the piled granular material is selected from the list of granular material consisting of: seeds, sand, rock aggregate, mineral aggregate, sugar, flour, a ground product, and a milled product.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2024
From: JOHNSON, BENJAMIN H.; JOHNSON, CHAD E.; ZENTS, ZANE
To: GRAIN WEEVIL CORPORATION
Reel/Frame 067268/0148 →
Continuity (3)
Continuation 17195021 · Mar 8, 2021
Provisional Application 62987311 · Mar 9, 2020
Related Publication 20240278980A1 · Aug 22, 2024
References Cited (116)
US 1400747A · Hopwood · 1921 [cited by applicant]
US 1622565A · Beaumont · 1927 [cited by applicant]
US 2174348A · Emile · 1939 [cited by applicant]
US 3124170A · Cooper · 1964 [cited by applicant]
US 3366283A · Newcomb · 1968 [cited by applicant]
US 3469719A · Peterson · 1969 [cited by applicant]
US 3593892A · Petit · 1971 [cited by applicant]
US 3949888A · Gessler et al. · 1976 [cited by applicant]
US 4033466A · Easton · 1977 [cited by applicant]
US 4077526A · Gessler et al. · 1978 [cited by applicant]
US 4207005A · Stanfield · 1980 [cited by applicant]
US 4411578A · Morrow · 1983 [cited by applicant]
US 4601414A · Lawson · 1986 [cited by applicant]
US 4720025A · Tatevosian et al. · 1988 [cited by applicant]
US 5472117A · Geiser et al. · 1995 [cited by applicant]
US 5769590A · Weikel · 1998 [cited by applicant]
US 6499929B1 · Salgado et al. · 2002 [cited by applicant]
US 8201649B2 · Andrus et al. · 2012 [cited by applicant]
US 8752662B1 · Mack · 2014 [cited by examiner]
US 9270319B2 · Bietz et al. · 2016 [cited by applicant]
US 9469472B2 · Anderson · 2016 [cited by applicant]
US 9637186B1 · Goldenberg et al. · 2017 [cited by applicant]
US 10011016B1 · Rembisz et al. · 2018 [cited by applicant]
US 10329103B1 · Moen · 2019 [cited by applicant]
US 10377573B2 · Olson et al. · 2019 [cited by applicant]
US 10814474B2 · Newman et al. · 2020 [cited by applicant]
US 10889455B1 · Agnew et al. · 2021 [cited by applicant]
US 10928483B1 · Heinen et al. · 2021 [cited by applicant]
US 11337374B2 · Olson et al. · 2022 [cited by applicant]
US 11608236B2 · Olson · 2023 [cited by applicant]
US 12037185B2 · Johnson et al. · 2024 [cited by applicant]
US 12269167B2 · Johnson et al. · 2025 [cited by applicant]
US 12269168B2 · Zents et al. · 2025 [cited by applicant]
US 20030024945A1 · Dasilva · 2003 [cited by applicant]
US 20050118903A1 · Leonov et al. · 2005 [cited by applicant]
US 20090087523A1 · Freeman et al. · 2009 [cited by applicant]
US 20120215348A1 · Skrinde · 2012 [cited by applicant]
US 20130216340A1 · Luster et al. · 2013 [cited by applicant]
US 20130216341A1 · Luster et al. · 2013 [cited by applicant]
US 20140158440A1 · Haar et al. · 2014 [cited by applicant]
US 20140250717A1 · Bloemendaal · 2014 [cited by applicant]
US 20150142250A1 · Cavender-Bares et al. · 2015 [cited by applicant]
US 20150177114A1 · Kapoor et al. · 2015 [cited by applicant]
US 20180348760A1 · Peverill et al. · 2018 [cited by applicant]
US 20190018378A1 · Varikooty et al. · 2019 [cited by applicant]
US 20190146426A1 · Blank · 2019 [cited by applicant]
US 20190193784A1 · Wach · 2019 [cited by applicant]
US 20190200510A1 · Chrysanthakopoulos et al. · 2019 [cited by applicant]
US 20190219980A1 · Dahlin · 2019 [cited by applicant]
US 20190391018A1 · Dann · 2019 [cited by applicant]
US 20200130965A1 · Kibbe et al. · 2020 [cited by applicant]
US 20200172159A1 · Kuwabara et al. · 2020 [cited by applicant]
US 20200198122A1 · Newman et al. · 2020 [cited by applicant]
US 20200263923A1 · Bloemendaal · 2020 [cited by applicant]
US 20210000006A1 · Ellaboudy et al. · 2021 [cited by applicant]
US 20210033698A1 · Heinen et al. · 2021 [cited by applicant]
US 20210061549A1 · Risser et al. · 2021 [cited by applicant]
US 20210122563A1 · Igarashi et al. · 2021 [cited by applicant]
US 20210276794A1 · Johnson et al. · 2021 [cited by applicant]
US 20220151135A1 · Das et al. · 2022 [cited by applicant]
US 20220170696A1 · Rogoschewsky et al. · 2022 [cited by applicant]
US 20220237965A1 · Vaccariello et al. · 2022 [cited by applicant]
US 20220363493A1 · Bowlin et al. · 2022 [cited by applicant]
US 20230000003A1 · Chrysanthakopoulos et al. · 2023 [cited by applicant]
US 20230061995A1 · Johnson et al. · 2023 [cited by applicant]
US 20230067298A1 · Koch et al. · 2023 [cited by applicant]
US 20230068940A1 · Johnson et al. · 2023 [cited by applicant]
US 20230172112A1 · Olson · 2023 [cited by applicant]
US 20230276739A1 · Johnson et al. · 2023 [cited by applicant]
US 20230277990A1 · Johnson et al. · 2023 [cited by applicant]
US 20230278215A1 · Johnson et al. · 2023 [cited by applicant]
US 20230284567A1 · Johnson et al. · 2023 [cited by applicant]
US 20240033918A1 · Johnson et al. · 2024 [cited by applicant]
US 20240033919A1 · Zents et al. · 2024 [cited by applicant]
US 20240286827A1 · Johnson et al. · 2024 [cited by applicant]
US 20240399576A1 · Vanderheyden et al. · 2024 [cited by applicant]
US 20240408754A1 · Bogado Torres et al. · 2024 [cited by applicant]
US 20250042030A1 · Vanderheyden et al. · 2025 [cited by applicant]
US 20250060760A1 · Bogado Torres et al. · 2025 [cited by applicant]
US 20250178196A1 · Johnson et al. · 2025 [cited by applicant]
US 20250178197A1 · Zents et al. · 2025 [cited by applicant]
US 20250187189A1 · Johnson et al. · 2025 [cited by applicant]
US 20250205892A1 · Vanderheyden et al. · 2025 [cited by applicant]
CN 202841952U · 2013 [cited by applicant]
CN 106863316A · 2017 [cited by applicant]
CN 109132611A · 2019 [cited by applicant]
CN 112590960A · 2021 [cited by applicant]
CN 113682844A · 2021 [cited by applicant]
CN 214878699U · 2021 [cited by applicant]
CN 113696996B · 2022 [cited by applicant]
CN 219669590U · 2023 [cited by applicant]
FR 3105340A1 · 2021 [cited by applicant]
JP H084685B2 · 1996 [cited by applicant]
WO 2022053810A1 · 2022 [cited by applicant]
WO 2023086356A1 · 2023 [cited by applicant]
WO 2023225535A1 · 2023 [cited by applicant]
WO 2025038506A2 · 2025 [cited by applicant]
WO 2025042776A2 · 2025 [cited by applicant]
WO 2025090751A1 · 2025 [cited by applicant]
Mack, J., “The Hydraulic Bin Bot”, 2020, Mack Robotics, Inc., https://www.mackrobotics.com/?q=bin_bot (Year: 2020). [cited by examiner]
He, D., Long, L., “Design and analysis of a novel multifunctional screw-propelled vehicle”, 2017, 2017 IEEE International Conference on Unmanned Systems (ICUS) pp. 324-330 (Year: 2017). [cited by examiner]
Seo, C., “Robust Design of a Screw-Based Crawling Robot on a Granular Surface”, Jul. 2021, IEEEAccess, vol. 9, 2021, pp. 103988-103995 (Year: 2021). [cited by examiner]
PCT Application No. PCT/US2022/049356; International Search Report and Written Opinion of the International Searching Authority, Feb. 17, 2023; 14 pages. [cited by applicant]
PCT Application No. PCT/US2023/067090; International Search Report and Written Opinion of the International Searching Authority, Sep. 21, 2023; 10 pages. [cited by applicant]
“Aglaunch Initiative”, Grain Weevil Pitch Video. Youtube.com Video. Mar. 2, 2021 [retrieved on Jul. 28, 2023], Mar. 2, 2021, 16 pgs. [cited by applicant]
Bedford, “Grain Weevil Robot: Technology keeps farmers out of the grain bins”, Successful Farming, Jan. 28, 2021, 1 pg. [retrieved on Jul. 28, 2023]. [cited by applicant]
Bhadra, et al., “Field-Observed Angles of Repose for Stored Grain in the United States”, Applied Engineering in Agriculture, 33(1) ISSN 0883-8542, pp. 131-137, American Society of Agricultural and Biological Engineers J… [cited by applicant]
Grain Weevil, “Grain Bin Management Robot”, Grain Weevil Webpage, Apr. 20, 2021, 3 pgs. [retrieved on Jul. 28, 2023]. [cited by applicant]
Jones, et al., “Aeration and Cooling of Stored Grain”, Oklahoma State University, Oklahoma Cooperative Extension Service, BAE-1101, Feb. 2017, 5 pgs. [retrieved on Jul. 28, 2023]. [cited by applicant]
Laws, “Robot Innovation Promises to Keep Farmers Out of Grain Bins”, Farm Progress, Mar. 24, 2021, 13 pgs. [retrieved on Jul. 28, 2023]. [cited by applicant]
PCT Application No. PCT/US2023/067090; International Preliminary Report on Patentability, Nov. 28, 2024; 8 pages. [cited by applicant]
European Patent Application No. 22 893 537.5; Extended European Search Report, Jun. 12, 2025, 8 pgs. [cited by applicant]
PCT Application No. PCT/US2024/041852; International Search Report and Written Opinion, Nov. 11, 2024, 6 pgs. [cited by applicant]
PCT Application No. PCT/US2024/042787; International Search Report and Written Opinion, Nov. 20, 2024; 7 pgs. [cited by applicant]
PCT Application No. PCT/US2024/052795; International Search Report and Written Opinion, Mar. 7, 2025, 17 pgs. [cited by applicant]
Lugo, et al., “Conceptual Design of Tetrad-Screw Propelled Omnidirectional All-Terrain Mobile Robot”, 2017, IEEE, 2017 2nd International Conference on Control and Robotics Engineering, 2017, pp. 13-17. [cited by applicant]