Patents Assigned to Caterpillar Inc
  • Publication number: 20210131987
    Abstract: A method and system for grading pistons with deposits is disclosed. In an embodiment, a piston with an outer surface and deposits upon the outer surface is increased in temperature and thermally scanned. The deposits are identified based on the temperature differences measured with respect to the temperature of the outer surface of the piston. Deposit characteristics can be generated from the identified locations of deposits and the magnitude of temperature difference with respect to the outer surface. The deposit characteristics are recorded and used to grade the pistons.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Seth C. Studnicka, Alex T. Edwin
  • Publication number: 20210131062
    Abstract: A hydraulic tank for a machine is disclosed herein. The hydraulic tank includes a casing defining an interior space and having an outer surface, an inner surface opposite the inner surface, and a return hydraulic fluid inlet extending through the casing. A first concave member is connected to the inner surface of the casing to form a passage. The passage is positioned and shaped to transport hydraulic fluid from the return hydraulic fluid inlet to another location within the hydraulic tank.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Jared E. Louis, Bruno L. Risatti
  • Publication number: 20210135458
    Abstract: A system and method for synchronizing a frequency of plurality of variable frequency generators with a variable frequency load over a variable frequency bus independent of a frequency conversion stage. A synchronization controller is configured to determine an optimal bus frequency of the variable frequency bus based on at least one power demand requirement of the variable frequency load operatively connected to the variable frequency bus. With the optimal frequency, an available power range supplied by the plurality of variable frequency gensets at the optimal bus frequency can be determined. The synchronization controller then asymmetrically loads the variable frequency load to the plurality variable frequency gensets at the optimal bus frequency based on the operating range of each variable frequency genset and recursively updates the optimal bus frequency based on operational statistics of the asymmetrically loaded variable frequency gensets.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Mike Snopko, Perry Converse, David Miller, Alexander Smith
  • Publication number: 20210135459
    Abstract: A system and method for variable frequency voltage regulation is presented. The system includes a variable frequency bus and a variable frequency load directly connected to the variable frequency bus. A plurality of variable frequency gensets are directly connected to the variable frequency bus. Each variable frequency genset includes a genset controller configured to select set points based on a selected frequency response curve of the variable frequency bus. A variable frequency voltage regulator is configured to regulate an electrical output of the variable frequency generator based on the selected set points. The system includes a voltage regulation controller configured to determine a desired bus frequency based on the variable frequency load, and determine an optimal frequency response curve based on the desired bus frequency and a frequency response model of each VFG. The selected frequency response curve is updated based on the determined optimal frequency response curve.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Perry Converse, Per Ole Sorensen, Mike Snopko, David Miller
  • Publication number: 20210129618
    Abstract: A center link has a bolt portion contact pad extending longitudinally and transversely from the bolt portion, forming a bolt portion contact surface extending transversely, and defining a bolt portion contact surface transverse width that is less than the shaft portion transverse width. The center link also has a mushroom head portion contact pad extending longitudinally and transversely from the mushroom head portion, forming a mushroom head portion contact surface, and defining a mushroom head portion contact surface transverse width that is less than the shaft portion transverse width.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventor: Ross Paul Wietharn
  • Publication number: 20210135605
    Abstract: A device that includes a memory and a processor is disclosed. The processor may be configured to receive a control signal for operating a plurality of traction motors of a work machine. The control signal may include information relating to an actual speed of the work machine, a target speed of the work machine, and a generator speed of a generator operatively coupled to the traction motors. The processor may be configured to determine respective torque commands associated with the traction motors based on the actual speed and the target speed, and determine a generator power limit based on the generator speed. The processor may be configured to determine a threshold based on the respective torque commands and the generator power limit, adjust the respective torque commands based on the threshold, and cause the traction motors to be operated based on the adjusted respective torque commands.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Brian KURAS, Ankit SHARMA, Lance COWPER
  • Publication number: 20210129929
    Abstract: A track chain assembly comprises a plurality of interlocking track chain members wherein each track chain member defines a track chain traveling direction, a lateral direction perpendicular to the track chain traveling direction, and includes a shoe member defining a shoe width along the lateral direction; and a first track pad member defining a first track pad maximum width along the lateral direction, and a second track pad member defining a second maximum track pad width along the lateral direction, wherein a ratio of either track pad maximum widths to the shoe member width ranges from 1:4 to 3:4. The first and the second track pad members each include a first projection disposed at one lateral extremity of the first track pad member and a second projection disposed at another lateral extremity of the second track pad member.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Gustavo Acosta, David Jennings Hakes, Benoit Abello, Benjamin Isaac Jones, Udo Nott
  • Publication number: 20210132577
    Abstract: A data system for tracking use of a work tool attachment that may be interchangeably attached to a machine includes a data transmission device located on the work tool attachment and an electronic machine controller that may be located on the machine. When an event occurs with respect to the work tool attachment, the data system collects a first tool data set from the data transmission device and a first set of machine data associated with the machine. When another event occurs with respect to the work tool attachment, the data system collects a second tool data set from the data transmission device and a second set of machine data. The first and second tool data sets and the first and second sets of machine data may be entered in one or more data logs for analytics.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventor: Richard A. Matzelle
  • Publication number: 20210131064
    Abstract: A method may include receiving, with a controller, at least one signal from a communication device associated with a hauling machine. The signal may include position information indicating a position of the hauling machine along a travel path the hauling machine is assigned to traverse extending between a material transfer site to a dump site, a payload capacity of the hauling machine, and an estimated volume of a material loaded into the hauling machine based on the payload capacity of the hauling machine. The method may also include defining, with the controller, a degree of completion of a material transport based on the position information.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventor: Gautham Subramanian
  • Publication number: 20210134075
    Abstract: A computer implemented preventative maintenance schedule can includes a plurality of predetermined maintenance intervals. A replaceable maintenance item may be initially assigned to an initially assigned maintenance interval. A performance data associated with the replaceable maintenance item may be measured and an estimated end of useful life may be determined based on the performance data. The estimated end of useful life is compared to the assigned maintenance interval and, if warranted, the assigned maintenance schedule is modified.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Richard A. Carpenter, Kyle B. Walton, John J. Krone, Venkata Dandibhotla, Yanchai Zhang
  • Publication number: 20210131913
    Abstract: A method and system for grading pistons with deposits is disclosed. In an embodiment, a piston with upon its outer surface deposits is three dimensionally scanned and compared to a reference model to detect the location and geometry of the deposits. The location and geometry of the deposits are recorded and used to grade the pistons. The piston is increased in temperature and thermally scanned. The deposits are identified based on the temperature differences measured with respect to the temperature of the outer surface of the piston. Deposit characteristics can be generated from the identified locations of deposits and the magnitude of temperature difference with respect to the outer surface. The deposit characteristics are recorded and used to grade the pistons.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Seth C. Studnicka, Christopher S. Meeks, Nien L. Lee, Michael S. Radovanovic
  • Publication number: 20210131077
    Abstract: A blank for fabricating a wear member for a ground-engaging tool includes a one-piece block having a boss channel and a lock bore each formed therein. The one-piece block includes a peripheral edge that projects upon lateral sides and a front end of the one-piece block, the peripheral edge originating and terminating at a back end of the block, to form a continuous welding interface that is partially perimetric of the one-piece block, for welding to a body of a wear member. The blank can be used to fabricate a variety of different wear members including shrouds, tooth tips, edge protectors, or others.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Phillip John Kunz, Adam M. Dean
  • Publication number: 20210131986
    Abstract: A method and system for grading pistons with deposits is disclosed. In an embodiment, a piston with deposits is three dimensionally scanned and compared to a reference model to detect the location and geometry of the deposits. The location and geometry of the deposits are recorded and used to grade the pistons.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Michael S. Radovanovic, Christopher S. Meeks, Nien L. Lee
  • Patent number: 10995615
    Abstract: A system for mining site production planning includes a control system configured to specify a problem-solving technique and associated optimization problem for a mining site by setting production goals and priorities for each of loading tools, processors, production arcs, and materials of the mining site, sorting the production arcs in an order based on travel distances, modifying the order based on the production goals for each of the loading tools, processors, production arcs, and/or materials, and further modifying the order based on set priorities for the loading tools, processors, production arcs, and/or materials. In addition, target values are set for each of the loading tools, processors, and production arcs according to their order of the sorted production arcs. The control system is further configured to solve the optimization problem to produce production values for each of the loading tools, processors, and production arcs based on the target values.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: May 4, 2021
    Assignee: Caterpillar Inc.
    Inventor: Kevin E. Gates
  • Patent number: 10997534
    Abstract: Systems and methods for connecting an operator at a worksite are disclosed. One method includes receiving telematics data relating to a machine operating at a worksite using a data standard, receiving operator condition data relating to an operator of the machine using the data standard, wherein the operator condition data comprises one or more of nutritional data, health data, activity data, and sleep data, determining an operation state based at least on the telematics data and the operator condition data, and generating a response based at least on the determined operation state, wherein the response is configured to be transmitted used the data standard.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: May 4, 2021
    Assignee: Caterpillar Inc.
    Inventors: Michael K. Hatfield, David J. Edwards
  • Patent number: 10998732
    Abstract: A hybrid micro-grid system for providing power to a load connected to a common bus. The system includes at least one renewable power source, at least one genset, at least one energy storage unit, and an asset management controller operatively coupled to the power sources supply power to the common bus. The AMC is configured to determine a renewable cost function, a genset cost function, and a storage cost function, then assigns a priority of each power source based on the corresponding cost function. The AMC determines a cascade of the power sources based on the determined priority and selectively distributes a power demand of the load between each power source based on the determined cascade.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: May 4, 2021
    Assignee: Caterpillar Inc.
    Inventors: Suresh B. Reddy, Dachuan Yu
  • Patent number: 10995653
    Abstract: A generator set is disclosed. The generator set may include a liquid-cooled engine and an alternating current (AC) generator coupled to the liquid-cooled engine. The generator set may include an AC fan associated with the liquid-cooled engine and connected to the AC generator via a relay and an engine control module (ECM) associated with the liquid-cooled engine and connected to the AC fan via the relay. The generator set may include an engine temperature sensor associated with the liquid-cooled engine and connected to the ECM via a first circuit and an engine air temperature sensor associated with the liquid-cooled engine and connected to the ECM via a second circuit.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: May 4, 2021
    Assignee: Caterpillar Inc.
    Inventors: Jay Roplekar, Antonis Dris
  • Patent number: 10995472
    Abstract: An earthmoving system includes a blade, a controller, and a blade control system configured to control the positioning of the blade. While grading, the earthmoving system is configured to simultaneously position the blade according to each of a fixed slope grading mode, a design driven control grading mode, and an fixed load grading mode.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: May 4, 2021
    Assignees: Caterpillar Trimble Control Technologies LLC, Caterpillar Inc.
    Inventors: Bruce J. Wiewel, Tony R. Metzger, Robert L. Powers, Richard R. Evenson
  • Publication number: 20210122209
    Abstract: A front upper frame connection for a space frame can comprise a top surface; a bottom surface opposite the top surface; a right-side surface; a left-side surface opposite the right-side surface; a front surface; a rear surface opposite the front surface; a pair of forward support plates provided on the front surface; a pair of forward flat mounting surfaces; and a pair of rocker attachment interfaces located on the top surface adjacent to the rear surface and respectively the right-side surface and the left-side surface. The front surface and the forward support plates can define a cutout section. Each of the forward support plates is curved and runs outward from a transverse centerline of the top surface and then forward.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 29, 2021
    Applicant: Caterpillar Inc.
    Inventor: Tad W Miller
  • Publication number: 20210122210
    Abstract: A front upper suspension connection for a space frame comprises a bottom surface fixedly attachable to a front lower suspension connection; a top rear mounting surface fixedly attachable to a front upper frame connection; a top front mounting surface fixedly attachable to a first elongate support member; a front strut attachment point located below the top rear mounting surface and the top front mounting surface to pivotably attach a front strut; and a lower rear mounting surface located below the top rear mounting surface fixedly attachable to a second elongate support member. The front strut attachment point can include a hole passing through the top rear mounting surface, a coaxial hole passing through the top front mounting surface, and a front strut attachment pin configured to pass through the top rear mounting surface, the top front mounting surface, and a top mounting hole integral to the front strut.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 29, 2021
    Applicant: Caterpillar Inc.
    Inventor: Tad W. Miller