Patents by Inventor Joshua Callaway
Joshua Callaway 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: 20240104655Abstract: A method for generating a prediction of a latency of a transaction processing system includes: sampling a first plurality of messages from a database that stores data indicative of messages previously processed by the transaction processing system including a characteristic and a processing time of each previously processed message; generating latency tables based upon the characteristics and the processing times of the sampled first plurality of messages; determining a characteristic of each of a second plurality of messages being processed by the transaction processing system; selecting, for each of the second plurality of messages, a latency table from the plurality of latency tables based upon the respective determined characteristic; simulating a processing time for each of the second plurality of messages based upon the respective selected latency table; and generating a latency prediction for the transaction processing system based upon the simulated processing times for the second plurality of messageType: ApplicationFiled: November 27, 2023Publication date: March 28, 2024Applicant: Chicago Mercantile Exchange Inc.Inventors: Jose Antonio Acuña-Rohter, Paul Callaway, Kyle D. Kavanagh, Christopher Walsh, Sherry Bryant, Elisa Lugo, Joshua Hoffberg
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Patent number: 9096989Abstract: A method and apparatus for controlling a hydraulic power system is provided that includes a hydraulic motor and a hydraulic pump configured to supply hydraulic fluid to the hydraulic motor. A relief valve is provided that is configured to release hydraulic fluid from a location between the hydraulic pump and the hydraulic motor when a pressure of the hydraulic fluid exceeds a predetermined relief pressure. Above a predetermined threshold pressure for the system, the displacement of the pump is adjusted to at least a minimum displacement that is based on a total demanded flow for the system that includes a desired flow of hydraulic fluid across the relief valve and a first hydraulic fluid flow consumed by the motor.Type: GrantFiled: May 25, 2012Date of Patent: August 4, 2015Assignee: Caterpillar Inc.Inventors: Joshua Callaway, Christopher Elliott, Grant Peterson
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Patent number: 9091343Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.Type: GrantFiled: January 14, 2014Date of Patent: July 28, 2015Assignee: Caterpillar Inc.Inventors: Joshua Callaway, Steven J. Juricak, Corwin E. Storer
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Publication number: 20150198246Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.Type: ApplicationFiled: January 14, 2014Publication date: July 16, 2015Applicant: Caterpillar Inc.Inventors: Joshua Callaway, Steven J. Juricak, Corwin E. Storer
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Publication number: 20140165546Abstract: A system and method for controlling fluid flow through a hydraulic valve in a work machine is disclosed. The system and method may include receiving an input command by a controller configured to control a fluid flow to an actuator, the input command generated by an input controller. The system and method may also include receiving a parameter indicative of pump flow by the controller, determining a first valve command corresponding to the input command and determining a second valve command based upon the parameter that achieves the fluid flow to the actuator corresponding to the first valve command.Type: ApplicationFiled: December 18, 2012Publication date: June 19, 2014Applicant: Caterpillar Inc.Inventors: Rustin Metzger, Joshua Callaway, Justin Speichinger
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Publication number: 20130345936Abstract: A system for automated control of movement of a machine includes a pitch rate sensor to indicate the pitch rate of the machine. The machine has an implement movable relative to the machine. A controller generates a command signal to move the implement to control the pitch rate of the machine. A method is also provided.Type: ApplicationFiled: June 22, 2012Publication date: December 26, 2013Applicant: CATERPILLAR INC.Inventors: Joshua Callaway, Jay Holloman Renfrow, Christopher Erik Bright
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Patent number: 8600621Abstract: A system for automated control of a ground-engaging traction device includes sensors to indicate a speed of the ground-engaging traction device, an acceleration of the machine, and a pitch rate of the machine. A controller determines a drive acceleration based upon the speed, and a ground acceleration based upon the acceleration and the pitch rate. The controller determines a command signal at least in part based upon an operator input command signal and a difference between the drive acceleration and the ground acceleration. A method is also provided.Type: GrantFiled: December 20, 2011Date of Patent: December 3, 2013Assignee: Caterpillar Inc.Inventors: Joshua Callaway, Todd R. Farmer
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Publication number: 20130312397Abstract: A method and apparatus for controlling a hydraulic power system is provided that includes a hydraulic motor and a hydraulic pump configured to supply hydraulic fluid to the hydraulic motor. A relief valve is provided that is configured to release hydraulic fluid from a location between the hydraulic pump and the hydraulic motor when a pressure of the hydraulic fluid exceeds a predetermined relief pressure. Above a predetermined threshold pressure for the system, the displacement of the pump is adjusted to at least a minimum displacement that is based on a total demanded flow for the system that includes a desired flow of hydraulic fluid across the relief valve and a first hydraulic fluid flow consumed by the motor.Type: ApplicationFiled: May 25, 2012Publication date: November 28, 2013Applicant: CATERPILLAR INC.Inventors: Joshua Callaway, Christopher Elliott, Grant Peterson
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Publication number: 20130158804Abstract: A system for automated control of a ground-engaging traction device includes sensors to indicate a speed of the ground-engaging traction device, an acceleration of the machine, and a pitch rate of the machine. A controller determines a drive acceleration based upon the speed, and a ground acceleration based upon the acceleration and the pitch rate. The controller determines a command signal at least in part based upon an operator input command signal and a difference between the drive acceleration and the ground acceleration. A method is also provided.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Applicant: CATERPILLAR INC.Inventors: Joshua Callaway, Todd R. Farmer
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Publication number: 20130158819Abstract: A system for automated movement of a ground engaging blade of a machine includes an acceleration sensor and a roll rate sensor on the blade to indicate a cross slope angular position of the blade. A controller stores a target cross slope and compares the target cross slope to the cross slope angular position. Movement of the ground engaging blade is at least in part based upon a difference between the target cross slope and the cross slope angular position to maintain the ground engaging blade at the target cross slope.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Applicant: CATERPILLAR INC.Inventor: Joshua Callaway
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Publication number: 20130158818Abstract: A system for automated movement of a ground engaging blade of a machine includes a sensor on the blade to indicate a measured roll rate of the ground engaging blade. A controller determines whether the operator roll rate command is within an expected range of the roll rate signal. Movement of the ground engaging blade is at least in part based upon the operator roll rate command.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Applicant: CATERPILLAR INC.Inventor: Joshua Callaway