Patents by Inventor Steven Gahlings
Steven Gahlings 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: 20250135915Abstract: A method of securing a battery for an electric work vehicle, the battery comprising a biometric identification device. A biometric identifier is collected from an operator using the biometric identification device. The biometric identifier is checked against a list of authorized operators. In an event that the operator matches an authorized operator from the list of authorized operators, access to the battery is enabled such that the operator is able to use the battery; remove the battery from the electric work vehicle and a charging module; and mount the battery into the electric work vehicle. In an event that the operator does not match an authorized operator from the list of authorized operators, access to the battery is prevented such that the operator is prevented from using the battery; removing the battery from the electric work vehicle and a charging module; and mounting the battery into the electric work vehicle.Type: ApplicationFiled: September 30, 2022Publication date: May 1, 2025Applicant: Caterpillar Inc.Inventors: Thomas L. TWIGGER, Steven GAHLINGS
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Publication number: 20250033518Abstract: A method of charging management for a worksite comprising a plurality of autonomous electric work vehicles is provided. The method comprises communicating charger properties from a plurality of charging modules to a central controller and communicating vehicle properties from a plurality of electric work vehicles to the central controller. Charging is scheduled for the plurality of electric work vehicles based on the charger properties and the vehicle properties, wherein scheduling charging comprises assigning to each of the electric work vehicles a designated charging time and a designated charging module. Each electric work vehicle and its designated charging module are brought together at the designated charging time of the electric work vehicle.Type: ApplicationFiled: November 23, 2022Publication date: January 30, 2025Applicant: Caterpillar Inc.Inventors: Thomas L. TWIGGER, Steven GAHLINGS
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Publication number: 20250033512Abstract: A method of charge management for electric work vehicles comprises communicating charger properties from a charging module to an electric work vehicle and communicating vehicle properties from the electric work vehicle to the charging module. Charging information is provided to an operator, wherein the charging information is based on the charger properties and the vehicle properties. The charger properties comprise a location of the charging module and an availability of the charging module. The vehicle properties comprise a current state of charge of a battery of the electric work vehicle and a capacity of the battery of the electric work vehicle.Type: ApplicationFiled: November 22, 2022Publication date: January 30, 2025Applicant: Caterpillar Inc.Inventors: Thomas L. TWIGGER, Steven GAHLINGS
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Patent number: 11221431Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.Type: GrantFiled: January 12, 2021Date of Patent: January 11, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
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Publication number: 20210165123Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.Type: ApplicationFiled: January 12, 2021Publication date: June 3, 2021Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
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Patent number: 10944109Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.Type: GrantFiled: May 10, 2019Date of Patent: March 9, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
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Patent number: 10921482Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2.Type: GrantFiled: September 9, 2015Date of Patent: February 16, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
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Patent number: 10539500Abstract: An integrated approach for cleaning an active surface of a petrochemical sensor. Sensors in the petrochemical industry are often deployed in locations where they are prone to fouling. By heating the active surface fouling substances may be removed from the active surface. Heating the surface above a supercritical point of a fluid being sensed may create a fluid that may serve to clean the active surface. Limiting the duration of the applied heating and/or pulsing the heating may mitigate adverse effects of use of high temperatures. A doped active surface, such as a doped diamond window may be designed to have conductive areas in the window that may be used for resistive heating of the window.Type: GrantFiled: September 9, 2015Date of Patent: January 21, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Timothy Jones, Nathan Lawrence, Go Fujisawa, Sheng Chao, Steven Gahlings
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Patent number: 10409300Abstract: A method for changing a set point of a system where period of a dominant resonance of the system is determined, a change profile for the set point change is processed; a time period for the set point change based on the period of the dominant resonance in order to minimize excitation of the dominant resonance is also processed; and the set point change is actioned according to the processed change profile and the time period.Type: GrantFiled: June 26, 2014Date of Patent: September 10, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Benjamin Peter Jeffryes, John Cook, Steven Gahlings
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Publication number: 20190267626Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.Type: ApplicationFiled: May 10, 2019Publication date: August 29, 2019Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
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Publication number: 20170242149Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2.Type: ApplicationFiled: September 9, 2015Publication date: August 24, 2017Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
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Publication number: 20170241899Abstract: An integrated approach for cleaning an active surface of a petrochemical sensor. Sensors in the petrochemical industry are often deployed in locations where they are prone to fouling. By heating the active surface fouling substances may be removed from the active surface. Heating the surface above a supercritical point of a fluid being sensed may create a fluid that may serve to clean the active surface. Limiting the duration of the applied heating and/or pulsing the heating may mitigate adverse effects of use of high temperatures. A doped active surface, such as a doped diamond window may be designed to have conductive areas in the window that may be used for resistive heating of the window.Type: ApplicationFiled: September 9, 2015Publication date: August 24, 2017Inventors: Timothy JONES, Nathan LAWRENCE, Go FUJISAWA, Sheng CHAO, Steven GAHLINGS
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Publication number: 20160139615Abstract: A method for changing a set point of a system where period of a dominant resonance of the system is determined, a change profile for the set point change is processed; a time period for the set point change based on the period of the dominant resonance in order to minimize excitation of the dominant resonance is also processed; and the set point change is actioned according to the processed change profile and the time period.Type: ApplicationFiled: June 26, 2014Publication date: May 19, 2016Inventors: Benjamin Peter JEFFRYES, John COOK, Steven GAHLINGS
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Publication number: 20160133932Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance.Type: ApplicationFiled: November 6, 2015Publication date: May 12, 2016Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
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Patent number: D995388Type: GrantFiled: October 5, 2022Date of Patent: August 15, 2023Inventors: Steven Gahlings, Andrew Crawford
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Patent number: D1010420Type: GrantFiled: October 5, 2022Date of Patent: January 9, 2024Assignee: Caterpillar SARLInventors: Steven Gahlings, Andrew Crawford