Patents by Inventor Mark E. Hartman
Mark E. Hartman 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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Publication number: 20220373680Abstract: A work machine, light detection and ranging (LiDAR) system, and method of reducing false object detections are disclosed. The work machine may include a frame, a power unit, a locomotive device, and the LiDAR system. The LiDAR system may include at least one laser, at least one sensor, a bracket, and a control unit configured to execute an object detection program. The LiDAR system is configured to exclude from its object detection program a plurality of beams emitted toward the work machine through a design of the bracket and/or software methods of the control unit. The method may include storing a database of exclude coordinates and using the database to filter out undesirable data samples from the object detection program.Type: ApplicationFiled: May 24, 2021Publication date: November 24, 2022Applicant: Caterpillar Paving Products lnc.Inventors: Todd A. Impola, Siddarth Desikan, Nathaniel Doy, Lawrence A. Mianzo, Mark E. Hartman, Shanmukha Bhumireddy, Sri Sekharan
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Patent number: 11502311Abstract: A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C2mimBF4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C2mimBF4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.Type: GrantFiled: May 15, 2020Date of Patent: November 15, 2022Assignee: PRINTED ENERGY Pty LtdInventors: Vera N. Lockett, John G. Gustafson, Alexandra E. Hartman, Mark D. Lowenthal, William J. Ray
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Patent number: 10852438Abstract: A system and method for controlling movement of a machine or a portion of the machine. The method comprises processing a waveform based on detected reflected light and a derivative of the waveform. The waveform includes a return. The method further comprises classifying the return as a phantom target or a non-amorphous target based on the result of the processing, and controlling movement of the machine or a portion of the machine based on the result of the classifying the return.Type: GrantFiled: August 21, 2017Date of Patent: December 1, 2020Assignee: Caterpillar Inc.Inventors: Mark E. Hartman, Weston Taylor, Nathaniel W. Hart, Thomas Joseph Houchin
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Publication number: 20190056504Abstract: A system and method for controlling movement of a machine or a portion of the machine. The method comprises processing a waveform based on detected reflected light and a derivative of the waveform. The waveform includes a return. The method further comprises classifying the return as a phantom target or a non-amorphous target based on the result of the processing, and controlling movement of the machine or a portion of the machine based on the result of the classifying the return.Type: ApplicationFiled: August 21, 2017Publication date: February 21, 2019Applicant: Caterpillar Inc.Inventors: Mark E. Hartman, Weston Taylor, Nathaniel W. Hart, Thomas Joseph Houchin
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Patent number: 8427331Abstract: A method for testing a power converter having at least one power transistor is disclosed. The method may include receiving a power transistor test request, and resetting a fault flag. The method may also include applying a gate driver signal to each power transistor, receiving a feedback signal from each power transistor, and determining a difference between the gate driver signal and the feedback signal associated with a respective power transistor. The method may further include identifying a fault if the difference exceeds a threshold profile, and setting a fault flag when a fault is identified.Type: GrantFiled: December 9, 2009Date of Patent: April 23, 2013Assignee: Caterpillar Inc.Inventors: Mark E. Hartman, James D. Siegle, Thuong D. Le, Bruce H. Hein
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Patent number: 8004226Abstract: A method of detecting one or more failed current sensor and estimating a phase current for the failed current sensor on a three-phase machine is disclosed. The method may include detecting one or more failed current sensor by determining if an absolute value of a sum of the phase currents of the motor is below an open circuit value. The method may also include determining which phase currents are approximately zero, for each phase current associated with each phase of the motor, if the sum of the phase currents of the motor is not below the open circuit value. The method may further include estimating the phase current for the failed current sensor by determining the phase current value for the failed current sensor, that when added to the phase currents of the remaining current sensors, will make the sum of all the phase currents equal to approximately zero.Type: GrantFiled: August 6, 2008Date of Patent: August 23, 2011Assignee: Caterpillar Inc.Inventors: Mark E. Hartman, Jesse R. Gerdes, Gregory J. Speckhart, Jackson Wai
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Publication number: 20100164735Abstract: A method for testing a power converter having at least one power transistor is disclosed. The method may include receiving a power transistor test request, and resetting a fault flag. The method may also include applying a gate driver signal to each power transistor, receiving a feedback signal from each power transistor, and determining a difference between the gate driver signal and the feedback signal associated with a respective power transistor. The method may further include identifying a fault if the difference exceeds a threshold profile, and setting a fault flag when a fault is identified.Type: ApplicationFiled: December 9, 2009Publication date: July 1, 2010Applicant: Caterpillar Inc.Inventors: Mark E. Hartman, James D. Siegle, Thuong D. Le, Bruce H. Hein
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Publication number: 20100033122Abstract: A method of detecting one or more failed current sensor and estimating a phase current for the failed current sensor on a three-phase machine is disclosed. The method may include detecting one or more failed current sensor by determining if an absolute value of a sum of the phase currents of the motor is below an open circuit value. The method may also include determining which phase currents are approximately zero, for each phase current associated with each phase of the motor, if the sum of the phase currents of the motor is not below the open circuit value. The method may further include estimating the phase current for the failed current sensor by determining the phase current value for the failed current sensor, that when added to the phase currents of the remaining current sensors, will make the sum of all the phase currents equal to approximately zero.Type: ApplicationFiled: August 6, 2008Publication date: February 11, 2010Inventors: Mark E. Hartman, Jesse R. Gerdes, Gregory J. Speckhart, Jackson Wai