Patents Assigned to Caterpillar Inc
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Publication number: 20210270204Abstract: An engine includes a cylinder liner and a piston movable within the cylinder liner, a crevice formed between a top land of the piston and the cylinder liner, and an oil entry clearance formed between a top ring of the piston and the cylinder liner. The engine also includes an abnormal combustion inhibitor having an oil recapture surface exposed to the crevice and oriented to limit migration of oil from the crevice toward a combustion chamber in the engine. The abnormal combustion inhibitor includes a groove structure having as a substrate at least one of the cylinder liner or the piston. Related methodology is also disclosed.Type: ApplicationFiled: February 28, 2020Publication date: September 2, 2021Applicant: Caterpillar Inc.Inventors: Kenth I. Svensson, Jaswinder Singh
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Publication number: 20210269108Abstract: A track chain assembly includes at least one track link having a shelf extending laterally from the a side surface and including a support surface spaced away from the top surface a predetermined distance measured perpendicularly to the top surface.Type: ApplicationFiled: February 27, 2020Publication date: September 2, 2021Applicant: Caterpillar Inc.Inventors: David J. Hakes, William P. Shoemaker
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Publication number: 20210270261Abstract: A hydraulic fracturing machine includes a pump failure detection system. The hydraulic fracturing machine includes a hydraulic fracturing pump with a power end and a fluid end. The power end includes a plurality of roller bearings, and the fluid end includes a flow of fluid. A particle sensor coupled to the power end is configured to transmit particle information regarding a quantity of particles in the fluid. A temperature sensor, also coupled to the power end, is configured to transmit temperature information regarding a temperature of the fluid. A vibration sensor coupled to the power end is configured to transmit vibration information regarding a vibration of each of the plurality of roller bearings. An electronic control module analyzes the particle information, the temperature information and the vibration information, and calculates a failure warning level based on the analysis.Type: ApplicationFiled: February 27, 2020Publication date: September 2, 2021Applicant: Caterpillar Inc.Inventors: Yanchai Zhang, Zhijun Cai, Nathan S. Pauli, Zhaoxu Dong, Yong Sun, Xuefei Hu
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Publication number: 20210270308Abstract: A nut for joining fluid conduits in a joint assembly includes a nut body having an inner body surface forming a through-bore, for supporting a first fluid conduit and a second fluid conduit. Internal threads upon the inner body surface advance in a helical path around a nut center axis between a thread origin, and a thread terminus that is located between first and second axial end faces of the nut body. At least one of the thread terminus and the thread origin is located within an increased thickness region formed by a varied radial thickness of the nut. The nut has a reduced risk of cracking in service.Type: ApplicationFiled: February 28, 2020Publication date: September 2, 2021Applicant: Caterpillar Inc.Inventors: Robert E Riedel, JR., Peter Allan Manos
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Patent number: 11105375Abstract: A retention system for a bearing member includes a sleeve member and a retention member. The retention system includes an inner shoulder adapted to limit movement of the bearing member in at least one of a first axial direction and a second axial direction relative to the bore. The retention system includes an outer shoulder adapted to limit movement of at least one of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. The retention system includes a plurality of fasteners adapted to limit movement of each of the sleeve member and the retention member in at least one of the first axial direction and the second axial direction relative to the bore. Each of the sleeve member and the retention member is adapted to limit contact of the bearing member with the bore.Type: GrantFiled: January 9, 2020Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Daniel Thomas Unger, Suresh Sappa, Scott Shaffer, Steven J. Fujan, Jacob P. Fawer
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Patent number: 11105278Abstract: An engine control system includes a dual fuel internal combustion engine, a fuel system including a liquid fuel source and a gaseous fuel source, and a controller. The engine control system further includes a liquid fuel control module and at least one gaseous fuel control module associated with a first and second subset of cylinders, each communicatively connected over a network. The controller has an operating mode and a cylinder deactivation mode. The controller in the operating mode is configured to instruct the liquid fuel control module and the at least one gaseous fuel control module to operate the plurality of cylinders in a dual fuel mode. The controller in the cylinder deactivation mode transitions the plurality of cylinders to a liquid-fuel only mode over a phase out period, deactivates the first subset of cylinders, and then transitions to the dual fuel mode in the second subset of cylinders.Type: GrantFiled: February 3, 2017Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Nathan Atterberry, Matthew Jordan Engfehr, Hua Xu
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Patent number: 11105653Abstract: A system for generating a map based upon a plurality of operations each including at least one quantitatively measurable task. The system includes a ground engaging drive mechanism, an operating sensor, a position sensor, a visual image display device, and a controller. The controller compares a first operating characteristic to a first operating range, and stores a first failed task and current machine position upon the first operating characteristic of the machine being outside of the first operating range. The controller also compares a second operating characteristic to a second operating range, and stores a second failed task and the current machine position upon the second operating characteristic of the machine being outside of the second operating range. A map of the machine path is displayed including each failed task and its associated machine position while performing the failed task.Type: GrantFiled: February 5, 2019Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Megan Schott, Rodney L. Menold, David C. Janik, Andrew J. de Haseth
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Patent number: 11105304Abstract: A fuel injector includes an injector body, and a stack within the injector body, and having a nozzle supply passage therein. The stack includes a solenoid assembly having a solenoid housing piece with a fuel bore formed therein that includes a segment of the nozzle supply passage. The solenoid housing piece includes a solenoid housing material in a base state, and a solenoid housing material in a residual compressive stressed state, with the fuel bore being formed by the solenoid housing material in the residual compressive stressed state. Residual stresses may be imparted by ballizing, nitriding, carburizing, autofrettage, or still another technique.Type: GrantFiled: December 4, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Hoisan Kim, Victor Iskander Yacoub, Sridhar Thangaswamy, Cory Brown, Robert Joseph Smith
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Patent number: 11105073Abstract: An adapter cover includes a shell body including an exterior surface, an interior surface, and defining a vertical direction, a horizontal direction, and a vertical plane, a front face portion defining a thru-hole, a top leg extending horizontally from the front face portion and defining an adapter key receiving recess on the interior surface and a top leg side portion defining a concave arcuate portion extending rearward from the front face portion, a convex arcuate portion extending horizontally from the concave arcuate portion, terminating in a vertical rear surface, and a bottom leg extending horizontally from the front face portion.Type: GrantFiled: March 7, 2019Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Eric T. Sinn, Douglas C. Serrurier, Rammagy Yoeu
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Patent number: 11105359Abstract: A shear pin supported cleaner finger assembly includes a frame member, a support member attached to the frame member, the support member defining a pivot point and a reactive point. A cleaner finger is pivotally attached to the support member at the pivot point, and a shear pin is positioned at the reactive point.Type: GrantFiled: November 6, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Nicholas Dean Weaver, Dakota J. Krokosz, Solomon James Sawlaw, Justin Thomas Clausen
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Patent number: 11104393Abstract: A track shoe cover may include a roller engaging surface and a shoe engaging surface. The shoe engaging surface may include a shoe engaging recess defined on at least two opposite sides by a set of side walls, and a respective attachment groove included in the set of side walls. The respective attachment groove may be configured to facilitate mechanical connection of the track shoe cover and a crawler shoe.Type: GrantFiled: July 24, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Benjamin Jones, Paul Prest
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Patent number: 11105249Abstract: An exhaust assembly includes an exhaust tube and a coolant passage. The exhaust tube is oriented about an axis and an exhaust gas is configured to flow through the exhaust tube in a direction away from an end of the exhaust tube. The coolant passage is oriented about the axis radially outward of the exhaust tube, the coolant passage having an inner shell and an outer shell. The end of the exhaust tube includes one or more holes permitting exhaust gas to flow around the end of the exhaust tube between an outer wall of the exhaust tube and the inner shell of the coolant passage to regulate a temperature of the inner shell of the coolant passage.Type: GrantFiled: August 30, 2019Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Joseph L. Kennedy, Bradley W. Hodges, Andrew D. Palmer
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Patent number: 11104978Abstract: A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed at the seal end of the cylindrical body. The seal flange circumscribes the body and projects radially from the body to a distal perimeter of the seal flange. The seal flange includes a sealing face which is annular and disposed adjacent the distal perimeter. The seal ring is made from an alloy that includes between 6 percent and 9 percent by weight of iron, between 1.5 percent and 3 percent by weight of silicon, greater than 14 percent by weight of chromium, and at least 65 percent by weight of nickel.Type: GrantFiled: December 14, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Li Zhang, Thomas Yaniak, Jichul Choi, Yeonbok Muk, Gilsung Kim
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Patent number: 11104392Abstract: A sprocket and an idler sharing a common wheel member are manufactured by a method that includes providing a common wheel member, providing an idler flange annular attachment, and providing a tooth annular attachment.Type: GrantFiled: November 1, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventors: Benjamin Isaac Jones, David J. Hakes
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Patent number: 11105306Abstract: A pump includes a pump body having an admission valve movable therein to alternately block and unblock a valve seat to connect a low pressure space to a pumping chamber. A control valve is positioned fluidly between a control chamber and the low pressure space, and moves between a closed position where the control chamber receives high pressure for hydraulically actuating the admission valve, and an open position where the control chamber is connected to the low pressure space to enable closing of the admission valve. The pilot actuation of the admission valve produces a greater travel distance and efficiency than what might be available with certain other actuating mechanisms.Type: GrantFiled: April 5, 2018Date of Patent: August 31, 2021Assignee: Caterpillar Inc.Inventor: Aaron Michael Brown
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Publication number: 20210262513Abstract: A bolt retainer, to position a bolt within a bolt receiving element of a component, is disclosed. The bolt retainer may include a tube structure. The bolt retainer may further include bolt engaging elements that extend from an inner surface of the tube structure to engage with the bolt. The bolt retainer may additionally include component engaging elements that extend from an outer surface of the tube structure to engage with the component.Type: ApplicationFiled: February 20, 2020Publication date: August 26, 2021Applicant: Caterpillar Inc.Inventors: Thomas Marshall CONGDON, Nathan BJERKE
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Publication number: 20210262565Abstract: A method of controlling gear selection in a vehicle transmission comprises detecting a change in a direction control signal (DCS) from a neutral signal state. If the current TOS is less than or equal to a predetermined neutral shift threshold TOS, the transmission selects one of a plurality of first direction gears if the DCS was changed to a first direction signal state or one of a plurality of second direction gears if the DCS was changed to a second direction signal state. If the current TOS is greater than the predetermined neutral shift threshold TOS, the transmission selects one of the plurality of first direction gears if a machine motion direction parameter indicates that the vehicle is moving in the first direction or one of the plurality of second direction gears if the machine motion direction parameter indicates that the vehicle is moving in the second direction.Type: ApplicationFiled: February 22, 2021Publication date: August 26, 2021Applicant: Caterpillar Inc.Inventors: Robert Nicholas Harper, Christopher L. Wynkoop, Shanmugahari Murugesan
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Publication number: 20210260508Abstract: A filter element includes a bottom open end joined to a center tube opposite the top open end. The bottom open end defines a radially outer surface and a radially inner surface that is in communication with the central reservoir of the filter element. A first locking feature is disposed proximate to the bottom open end. The locking feature includes an entrance slot that is disposed on the radially inner surface of the center tube extending axially from the bottom open end. A similar or identical second locking feature is disposed proximate to the top open end.Type: ApplicationFiled: February 24, 2020Publication date: August 26, 2021Applicant: Caterpillar Inc.Inventors: Jeffrey R. Ries, Jon T. Immel, Darrell Lee Morehouse, III, Stephen Ellis Oedewaldt, Philip Carl Spengler
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Publication number: 20210262830Abstract: A component identification system is disclosed. The component identification system may include a sensor system that includes a first Hall-effect switch configured to provide a first output signal corresponding to a state of the first Hall-effect switch, and a second Hall-effect switch configured to provide a second output signal corresponding to a state of the second Hall-effect switch. The sensor system may be configured to provide a single output signal that is based on the first output signal and the second output signal and indicates a combined state of the first Hall-effect switch and the second Hall-effect switch. The component identification system may include a component that is to be identified. The component may include a first magnet configured to affect the state of the first Hall-effect switch and a second magnet configured to affect the state of the second Hall-effect switch.Type: ApplicationFiled: February 20, 2020Publication date: August 26, 2021Applicant: Caterpillar Inc.Inventors: Michael T. McKINLEY, Ye TIAN
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Publication number: 20210260510Abstract: A filter identification system is disclosed. The filter identification system may include an identification component disposed in a filter mount configured to hold a set of filters that includes a first filter and a second filter. The identification component may include a sensor system that may include a first sensor configured to provide a first output signal corresponding to a state of the first sensor, and a second sensor configured to provide a second output signal corresponding to a state of the second sensor. The sensor system may be configured to provide a single output signal that is based on the first output signal and the second output signal and indicates a combined state of the first sensor and the second sensor.Type: ApplicationFiled: February 20, 2020Publication date: August 26, 2021Applicant: Caterpillar Inc.Inventors: Michael T. McKINLEY, Ye TIAN, Stephan D. ROOZENBOOM
