Patents by Inventor Daniel P. Sergison
Daniel P. Sergison 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: 20260091662Abstract: A power system includes a mechanical module having an engine, a transmission, a cooling unit, and a motor-generator unit. The power system includes a frame connected to the mechanical module and removably connectable to a mount within a vehicle, such that the frame and the mechanical module are removable from the vehicle. The power system includes an electrical module having one or more batteries, a thermal management system, and one or more power electronics. The power system includes a housing which at least partially supports the electrical module. The housing includes feet that are releasably insertable into cleats connected to the vehicle, such that the housing and the electrical module are separately removable from the vehicle.Type: ApplicationFiled: December 1, 2025Publication date: April 2, 2026Applicant: Caterpillar Inc.Inventors: Jaspen PATENAUDE, David Jennings HAKES, Bradley Paul WRAGE, Daniel P. SERGISON
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Publication number: 20260091661Abstract: A power system includes a mechanical module having an engine, a transmission, a cooling unit, and a motor-generator unit. The power system includes a frame connected to the mechanical module and removably connectable to a mount within a vehicle, such that the frame and the mechanical module are removable from the vehicle. The power system includes an electrical module having one or more batteries, a thermal management system, and one or more power electronics. The power system includes a housing which at least partially supports the electrical module. The housing includes feet that are releasably insertable into cleats connected to the vehicle, such that the housing and the electrical module are separately removable from the vehicle.Type: ApplicationFiled: October 1, 2024Publication date: April 2, 2026Applicant: Caterpillar Inc.Inventors: Jaspen PATENAUDE, David Jennings HAKES, Bradley Paul WRAGE, Daniel P. SERGISON
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Publication number: 20260091663Abstract: A power system includes a mechanical module having an engine, a transmission, a cooling unit, and a motor-generator unit. The power system includes a frame connected to the mechanical module and removably connectable to a mount within a vehicle, such that the frame and the mechanical module are removable from the vehicle. The power system includes an electrical module having one or more batteries, a thermal management system, and one or more power electronics. The power system includes a housing which at least partially supports the electrical module. The housing includes feet that are releasably insertable into cleats connected to the vehicle, such that the housing and the electrical module are separately removable from the vehicle.Type: ApplicationFiled: December 1, 2025Publication date: April 2, 2026Applicant: Caterpillar Inc.Inventors: Jaspen PATENAUDE, David Jennings HAKES, Bradley Paul WRAGE, Daniel P. SERGISON
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Patent number: 12490400Abstract: A power electronics module (PEM) is constructed to convert electricity from an input form to an output form. Electrical power conversion subcircuits having input and output ports are positioned proximal to a front mounting plate. Rigid conductor elements having respective preformed shapes are constructed to electrically interconnect the subcircuits at input and output ports thereof to form a power conversion circuit selected from among multiple power conversion circuits configurable solely by selection of the conductor elements. Other preformed conductor shapes are constructed to interconnect input and output ports of the selected power conversion circuit to ports disposed on a rear mounting plate. A controller is mechanically coupled to the front mounting plate and constructed to operate the semiconductor switches in a prescribed timing that converts the electricity of the input form to the electricity of the output form by the selected power conversion circuit.Type: GrantFiled: April 11, 2023Date of Patent: December 2, 2025Assignee: Caterpillar Inc.Inventors: Eric M. Andris, Michael R. Garrabrant, Evan Blair Stumpges, Luke A. Ketcham, Daniel P. Sergison
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Publication number: 20240349436Abstract: A power electronics module (PEM) is constructed to convert electricity from an input form to an output form. Electrical power conversion subcircuits having input and output ports are positioned proximal to a front mounting plate. Rigid conductor elements having respective preformed shapes are constructed to electrically interconnect the subcircuits at input and output ports thereof to form a power conversion circuit selected from among multiple power conversion circuits configurable solely by selection of the conductor elements. Other preformed conductor shapes are constructed to interconnect input and output ports of the selected power conversion circuit to ports disposed on a rear mounting plate. A controller is mechanically coupled to the front mounting plate and constructed to operate the semiconductor switches in a prescribed timing that converts the electricity of the input form to the electricity of the output form by the selected power conversion circuit.Type: ApplicationFiled: April 11, 2023Publication date: October 17, 2024Applicant: Caterpillar Inc.Inventors: Eric M. ANDRIS, Michael R. GARRABRANT, Evan Blair STUMPGES, Luke A. KETCHAM, Daniel P. SERGISON
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Patent number: 11788828Abstract: A device for measuring rotation of a spherical joint in a steering system, may include an anchor secured within a ball stud of the spherical joint and a rotational tie having a first end and a second end. The first end of the rotational tie may be secured to the anchor to hold the first end parallel to a longitudinal axis of the ball stud. The device may also include a rotation sensor including a sensor target rotationally coupled to the second end of the rotational tie and secured for free rotation to a framework of the spherical joint. The rotation sensor may also include an angle sensor configured and arranged to sense a changing angle of the sensor target.Type: GrantFiled: July 1, 2022Date of Patent: October 17, 2023Assignee: Caterpillar Inc.Inventors: Jeremy T. Peterson, Daniel P. Sergison, Edward William Mate, Jeffrey L. Kuehn, Andrew J. de Haseth
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Patent number: 11746927Abstract: An additive manufacturing system includes a base having a substantially planar surface, a plurality of support legs to support the hose management system on a ground surface such that the base is substantially parallel to the ground surface, a tower, a pivot connection point disposed on the base, the pivot connection point configured to pivotably attach to a proximal end of the tower, a winch attached to the base, and a winch cable configured to be attached between the winch and the tower. Activation of the winch applies a tension to the winch cable to cause the tower to pivot from a prone position to an upright position.Type: GrantFiled: October 30, 2020Date of Patent: September 5, 2023Assignee: Caterpillar Inc.Inventor: Daniel P. Sergison
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Patent number: 11662245Abstract: A payload measurement system can be used to measure the payload added to a machine supported on a plurality of walking beams. A plurality of load cell sensors is mounted to the walking beams in locations where, when the walking beam bends, the sensors are placed under load. The load cell sensors include a symmetrical strain bar having first and second mounting ends connected by a connecting span, wherein the end thickness is greater than the span thickness of the connecting span. The connecting span is disposed between and spaced apart from an upper plane and a lower plane with which the surfaces of the mounting ends are aligned.Type: GrantFiled: April 9, 2020Date of Patent: May 30, 2023Assignee: Caterpillar Inc.Inventors: John J. Krone, Mitchell C. Vlaminck, James C. Hall, Daniel P. Sergison, Mark A. Spatz
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Patent number: 11389953Abstract: A construction system includes an excavator having a hydraulically controlled linkage and a hydraulic robot. The hydraulic robot includes a plurality of arms extending from a base, each arm having a hydraulic motor. The hydraulic robot further includes a robot control system directing movement of the plurality of arms and an end effector platform movable by rotation of the arms.Type: GrantFiled: January 31, 2019Date of Patent: July 19, 2022Assignee: Caterpillar Inc.Inventors: Zhijun Cai, Daniel P. Sergison, Daniel J. Martinez, Corey L. Gorman, Rustin G. Metzger, Eric A. Reiners
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Publication number: 20220136265Abstract: A hose management system for a 3D printing system having a print medium pump and a print nozzle may include a base, a vertical tower extending upward from the base, a vertical pipe rotatably coupled to the vertical tower, a boom pipe extending laterally outward from and rotating with the vertical pipe, a stick connected to the boom pipe for relative rotation about at least two perpendicular axes, and a print hose connected between the boom pipe and the print nozzle so that the vertical pipe, the boom pipe and the print hose place the print medium pump in fluid communication with the print nozzle. The print hose may be suspended from the stick such that the vertical pipe, the boom pipe, the stick and the print hose follow movement of the print nozzle by the 3D printing system to print a 3D object.Type: ApplicationFiled: October 30, 2020Publication date: May 5, 2022Applicant: Caterpillar Inc.Inventor: Daniel P. Sergison
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Publication number: 20220136619Abstract: An additive manufacturing system includes a base having a substantially planar surface, a plurality of support legs to support the hose management system on a ground surface such that the base is substantially parallel to the ground surface, a tower, a pivot connection point disposed on the base, the pivot connection point configured to pivotably attach to a proximal end of the tower, a winch attached to the base, and a winch cable configured to be attached between the winch and the tower. Activation of the winch applies a tension to the winch cable to cause the tower to pivot from a prone position to an upright position.Type: ApplicationFiled: October 30, 2020Publication date: May 5, 2022Applicant: Caterpillar Inc.Inventor: Daniel P. Sergison
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Publication number: 20210318160Abstract: A payload measurement system can be used to measure the payload added to a machine supported on a plurality of walking beams. A plurality of load cell sensors is mounted to the walking beams in locations where, when the walking beam bends, the sensors are placed under load. The load cell sensors include a symmetrical strain bar having first and second mounting ends connected by a connecting span, wherein the end thickness is greater than the span thickness of the connecting span. The connecting span is disposed between and spaced apart from an upper plane and a lower plane with which the surfaces of the mounting ends are aligned.Type: ApplicationFiled: April 9, 2020Publication date: October 14, 2021Applicant: Caterpillar Inc.Inventors: John J. Krone, Mitchell C. Vlaminck, James C. Hall, Daniel P. Sergison, Mark A. Spatz
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Publication number: 20200246967Abstract: A construction system includes an excavator having a hydraulically controlled linkage and a hydraulic robot. The hydraulic robot includes a plurality of arms extending from a base, each arm having a hydraulic motor. The hydraulic robot further includes a robot control system directing movement of the plurality of arms and an end effector platform movable by rotation of the arms.Type: ApplicationFiled: January 31, 2019Publication date: August 6, 2020Applicant: Caterpillar Inc.Inventors: Zhijun CAI, Daniel P. SERGISON, Daniel J. MARTINEZ, Corey L. GORMAN, Rustin G. METZGER, Eric A. REINERS
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Publication number: 20200048893Abstract: A system for additive manufacturing includes a mobile implement system with a nozzle, an implement system pose sensor, and a controller. The controller determines a plurality of potential poses and a plurality of potential paths of the nozzle. A desired pose and a desired path are selected and a sequence and rate of operation of the mobile implement system is determined to permit the nozzle to deposit sequential layers of material to form a desired structure. After moving the mobile implement system towards the desired pose, a modified sequence and rate of operation of the mobile implement system is determined that will cause the nozzle to follow the desired path even if the mobile implement system is not at the desired pose while depositing the sequential layers of material along the desired path to form the structure.Type: ApplicationFiled: August 8, 2018Publication date: February 13, 2020Applicant: Caterpillar Inc.Inventors: Daniel J. Martinez, Zhijun Cai, Daniel P. Sergison
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Patent number: 9593723Abstract: A disconnect clutch and method of controlling the connection of a parasitic load to an engine disposed on a machine is disclosed. The disconnect clutch may comprise a flywheel assembly, a friction plate and a coupling. The flywheel assembly may include a flywheel having a cavity, a chamber, a piston moveable between a contracted position and an expanded position, a pressure plate, a lever, and a coupling operably connected to the friction plate. The flywheel may include an end plate. The chamber may be defined by the flywheel and the piston. The lever may apply an activation force to the pressure plate when the piston is in the expanded position. The friction plate may be attached to and rotatable with the flywheel assembly when the piston is in the expanded position and generally stationary when the piston is in the contracted position.Type: GrantFiled: October 6, 2014Date of Patent: March 14, 2017Assignee: Caterpillar Inc.Inventors: Michael Douglas Anderson, Megan Alissa Brinkmeyer, Daniel P. Sergison, Thomas Alan Brosowske, Grant Steven Peterson, Michael G. Cronin, Raymond B. Derer
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Publication number: 20160097429Abstract: A disconnect clutch and method of controlling the connection of a parasitic load to an engine disposed on a machine is disclosed. The disconnect clutch may comprise a flywheel assembly, a friction plate and a coupling. The flywheel assembly may include a flywheel having a cavity, a chamber, a piston moveable between a contracted position and an expanded position, a pressure plate, a lever, and a coupling operably connected to the friction plate. The flywheel may include an end plate. The chamber may be defined by the flywheel and the piston. The lever may apply an activation force to the pressure plate when the piston is in the expanded position. The friction plate may be attached to and rotatable with the flywheel assembly when the piston is in the expanded position and generally stationary when the piston is in the contracted position.Type: ApplicationFiled: October 6, 2014Publication date: April 7, 2016Applicant: CATERPILLAR INC.Inventors: Michael Douglas Anderson, Megan Alissa Brinkmeyer, Daniel P. Sergison, Thomas Alan Brosowske, Grant Steven Peterson, Michael G. Cronin, Raymond B. Derer
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Patent number: 8626404Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.Type: GrantFiled: November 19, 2010Date of Patent: January 7, 2014Assignee: Caterpillar Inc.Inventors: Norval P. Thomson, Gregory Durst, Martin Lehman, Shane McBride, Daniel P. Sergison
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Patent number: 8327697Abstract: An improved speed sensing system is disclosed for a machine, such as a truck, that has an axle with an end and an axis. The machine further includes a sensor non-rotatably coupled to the end of the axle and coaxial with the axis. A wheel hub is rotatably coupled to the axle and a wheel cover is coupled to the wheel hub. The machine further includes a magnet coaxially disposed with the axis and coupled to the wheel cover for rotation about the axis as the wheel rotates. The sensor generates signals based on the rotational speed of the magnet and the wheel. For non-rotating axles that are solid or include solid spindles, a passageway for a communication line between the sensor and electronic control module (ECM) may be easily drilled thereby making the disclosed system easy to add to an existing machine or vehicle.Type: GrantFiled: October 11, 2010Date of Patent: December 11, 2012Assignee: Caterpillar Inc.Inventors: Gerry O. McCann, Jesse C. Anderson, Aaron F. Clay, Keith F. Harvey, Keith A. Kabrick, Alice L. Kim, Daniel T. Wilhelm, Daniel P. Sergison
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Patent number: 8261544Abstract: A method of braking a hydrostatic drive machine includes steps of reducing a displacement of a pump of a hydrostatic drive system to a non-zero displacement, and increasing a displacement of a motor of the hydrostatic drive system to a displacement that is less than a maximum displacement. The method also includes a step of accelerating an engine of the hydrostatic drive system toward a desired engine speed range.Type: GrantFiled: August 28, 2008Date of Patent: September 11, 2012Assignee: Caterpillar Inc.Inventors: J. Swapna Basana, Steven A. Daniel, Norval Thomson, Michael Anderson, Daniel P. Sergison
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Publication number: 20120130600Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Applicant: CATERPILLAR INC.Inventors: NORVAL P. THOMSON, GREGORY DURST, MARTIN LEHMAN, SHANE MCBRIDE, DANIEL P. SERGISON