Patents by Inventor James D. Walker
James D. Walker 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: 20230149657Abstract: There is a ventilator for mechanical ventilation during a breathing cycle including an inhalation cycle and an exhalation cycle. The ventilator is configurable to be in fluid communication with a supply of a first fluid. The ventilator includes an inhalation pathway and an exhalation pathway. A first fluid injector is in fluid communication with the supply of the first fluid for injecting the first fluid. The inhalation pathway receives the first fluid injected by the first fluid injector. A controller is operatively connected with the first fluid injector and programmed to selectively actuate the first fluid injector to inject the first fluid, which is received within the inhalation pathway such that an inhalation pressure in the inhalation pathway is within a predetermined range during the inhalation cycle.Type: ApplicationFiled: April 9, 2021Publication date: May 18, 2023Inventor: James D. Walker
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Patent number: 10859019Abstract: Starting a gaseous fuelled engine employing a pilot fuel at cold temperatures is challenging due to reduced ignitability and combustion efficiency of the fuel(s), and the increased viscosity of engine oil. A technique for starting a compression ignition, gaseous fuelled internal combustion engine employing a pilot fuel comprises determining one of a normal start condition and a cold start condition; during the normal start condition, introducing the pilot fuel into a combustion chamber of the internal combustion engine when the pilot fuel pressure rises above a first pressure; during the cold start condition, introducing the pilot fuel into the combustion chamber when the pilot fuel pressure rises above a second pressure that is higher than the first pressure; and selectively introducing the gaseous fuel into the combustion chamber.Type: GrantFiled: February 10, 2015Date of Patent: December 8, 2020Assignee: WESTPORT POWER INC.Inventors: Wei Fei, James D Walker
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Patent number: 10775136Abstract: An armor system for protecting vehicles and other equipment against projectiles and similar threats. A track is mounted on the equipment, and an upper sled and lower sled are moveably attached to the track. An armor panel is pivotally attached to one sled and is pivotally attached with arms to the other sled. The two sleds are independently actuated along the track, such that their relative positions determine both the translational and rotational position of the armor panel. The armor panel can be quickly rotated from an undeployed position against the vehicle through a desired arc outward from the vehicle, which increases the edge-on or nearly edge-on presentation of the armor panel to the projectile.Type: GrantFiled: April 26, 2018Date of Patent: September 15, 2020Assignee: Southwest Research InstituteInventors: James D. Walker, Daniel J. Pomerening, Kristopher C. Kozak, Nicholas J. Mueschke, Isaias S. Chocron, Gregory N. Wattis, Jesse A. Beavers, Oliver P. Harrison, Stephan J. Lemmer, Neal A. Seegmiller
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Patent number: 10577279Abstract: A method of modifying glass frit involves treating the frit with a grain-boundary-healing compound. The method increases transmission and clarity, and reduces haze of a fired enamel coating made from such modified glass frit as compared to a coating not made from such modified glass frit. The grain-boundary-healing compound influences the chemistry at the grain boundaries to prevent haze. The compound burns out to yield a fluxing material that dissolves alkaline carbonates or bicarbonates on the surface of the glass frit. The dissolved species are incorporated into the enamel coating, thereby promoting the fusion of the glass frit and reducing the amount of haze in the enamel coating. The additives also function to prevent the formation of seed crystals on the surface of the glass frit that may inhibit the fusion of the glass frit.Type: GrantFiled: January 4, 2016Date of Patent: March 3, 2020Assignee: Ferro CorporationInventors: Enos A. Axtell, III, John J. Maloney, James D. Walker, Srinivasan Sridharan, George E. Sakoske
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Patent number: 10561070Abstract: Monitoring current draw of an actuator associated with a rotating arm on a round baler during a net wrapping cycle is used to determine the position of the rotating arm and actuator, as well as to determine the net tension. The current draw of the actuator may be correlated with the home and insert positions of the rotating arm during the net wrapping cycle; thus by monitoring the current draw, the rotating arm and actuator position is determined and may be provided to aid an operator. The net tension during the net wrapping cycle is a function of the rotating arm and actuator current. A calculation of net tension is determined and provided to an operator, allowing the operator to verify performance issues related to the net tension.Type: GrantFiled: June 14, 2017Date of Patent: February 18, 2020Assignee: CNH Industrial America LLCInventors: Kevin M. Smith, Mark K. Chow, Carl Brewer, James D. Walker, Justin J. Snook, Larry L. Hoover
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Publication number: 20190331462Abstract: An armor system for protecting vehicles and other equipment against projectiles and similar threats. A track is mounted on the equipment, and an upper sled and lower sled are moveably attached to the track. An armor panel is pivotally attached to one sled and is pivotally attached with arms to the other sled. The two sleds are independently actuated along the track, such that their relative positions determine both the translational and rotational position of the armor panel. The armor panel can be quickly rotated from an undeployed position against the vehicle through a desired arc outward from the vehicle, which increases the edge-on or nearly edge-on presentation of the armor panel to the projectile.Type: ApplicationFiled: April 26, 2018Publication date: October 31, 2019Inventors: James D. Walker, Daniel J. Pomerening, Kristopher C. Kozak, Nicholas J. Mueschke, Isaias S. Chocron, Gregory N. Wattis, Jesse A. Beavers, Oliver P. Harrison, Stephan J. Lemmer, Neal A. Seegmiller
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Patent number: 9885299Abstract: A method for fuel regulation during a non-motoring operating mode of an internal combustion engine is provided. A fuel regulator employs a first fuel to regulate pressure of a second fuel. The first fuel is communicated to the fuel regulator through a first fuel circuit. The method comprises actuating a fuel injector that introduces the first fuel and the second fuel into a combustion chamber of the internal combustion engine during the non-motoring operating mode. The fuel injector is actuated with an injection command signal having a pulse width below a predetermined maximum value whereby no fuel is injected into the combustion chamber and the first fuel drains from the first fuel circuit through the fuel injector to a supply tank.Type: GrantFiled: March 6, 2014Date of Patent: February 6, 2018Assignee: WESTPORT POWER INC.Inventors: Alain Touchette, James D. Walker, Jordan Haas
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Publication number: 20180009700Abstract: A method of modifying glass frit involves treating the frit with a grain-boundary-healing compound. The method increases transmission and clarity, and reduces haze of a fired enamel coating made from such modified glass frit as compared to a coating not made from such modified glass frit. The grain-boundary-healing compound influences the chemistry at the grain boundaries to prevent haze. The compound burns out to yield a fluxing material that dissolves alkaline carbonates or bicarbonates on the surface of the glass frit. The dissolved species are incorporated into the enamel coating, thereby promoting the fusion of the glass frit and reducing the amount of haze in the enamel coating. The additives also function to prevent the formation of seed crystals on the surface of the glass frit that may inhibit the fusion of the glass frit.Type: ApplicationFiled: January 4, 2016Publication date: January 11, 2018Applicant: Ferro CorporationInventors: Enos A. Axtell, III, John J. Maloney, James D. Walker, Srinivasan Sridharan, George E. Sakoske
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Patent number: 9850827Abstract: Emission targets, such as NOx levels, for gaseous fuelled internal combustion engines that burn a gaseous fuel in a diffusion combustion mode are increasingly more challenging to achieve. A method of fuel injection for an internal combustion engine fuelled with a gaseous fuel comprises introducing a first amount of pilot fuel in a first stage of fuel injection; introducing a first amount of main fuel (the gaseous fuel) in a second stage of fuel injection; and introducing a second amount of main fuel in a third stage of fuel injection. The first and second amounts of main fuel contribute to load and speed demand of the internal combustion engine. Engine maps calibrated for different engine performance can be employed in different regions of the load and speed range of the engine. The engine maps are blended when the engine transitions between two regions; and momentary excursions into different regions do not change the engine calibration.Type: GrantFiled: December 16, 2014Date of Patent: December 26, 2017Assignee: WESTPORT POWER INC.Inventors: Wei Fei, James D. Walker, Gordon P. McTaggart-Cowan, Kenneth R. Mann
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Publication number: 20170273247Abstract: Monitoring current draw of an actuator associated with a rotating arm on a round baler during a net wrapping cycle is used to determine the position of the rotating arm and actuator, as well as to determine the net tension. The current draw of the actuator may be correlated with the home and insert positions of the rotating arm during the net wrapping cycle; thus by monitoring the current draw, the rotating arm and actuator position is determined and may be provided to aid an operator. The net tension during the net wrapping cycle is a function of the rotating arm and actuator current. A calculation of net tension is determined and provided to an operator, allowing the operator to verify performance issues related to the net tension.Type: ApplicationFiled: June 14, 2017Publication date: September 28, 2017Inventors: Kevin M. Smith, Mark K. Chow, Carl Brewer, James D. Walker, Justin J. Snook, Larry L. Hoover
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Patent number: 9706716Abstract: Monitoring current draw of an actuator associated with a rotating arm on a round baler during a net wrapping cycle is used to determine the position of the rotating arm and actuator, as well as to determine the net tension. The current draw of the actuator may be correlated with the home and insert positions of the rotating arm during the net wrapping cycle; thus by monitoring the current draw, the rotating arm and actuator position is determined and may be provided to aid an operator. The net tension during the net wrapping cycle is a function of the rotating arm and actuator current. A calculation of net tension is determined and provided to an operator, allowing the operator to verify performance issues related to the net tension.Type: GrantFiled: August 21, 2012Date of Patent: July 18, 2017Assignee: CNH Industrial America LLCInventors: Kevin M. Smith, Mark K. Chow, Carl Brewer, James D. Walker, Justin J. Snook, Larry L. Hoover
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Publication number: 20170175657Abstract: Starting a gaseous fuelled engine employing a pilot fuel at cold temperatures is challenging due to reduced ignitability and combustion efficiency of the fuel(s), and the increased viscosity of engine oil. A technique for starting a compression ignition, gaseous fuelled internal combustion engine employing a pilot fuel comprises determining one of a normal start condition and a cold start condition; during the normal start condition, introducing the pilot fuel into a combustion chamber of the internal combustion engine when the pilot fuel pressure rises above a first pressure; during the cold start condition, introducing the pilot fuel into the combustion chamber when the pilot fuel pressure rises above a second pressure that is higher than the first pressure; and selectively introducing the gaseous fuel into the combustion chamber.Type: ApplicationFiled: February 10, 2015Publication date: June 22, 2017Inventors: Wei FEI, James D WALKER
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Patent number: 9671529Abstract: The present subject matter provides a transitional layer and related methods, used to increase the transmission or reflection of light between two mediums having different indices of refraction. The transitional layer is disposed between the two mediums and the transmission or reflection of light is increased by the interaction of light with the transitional layer. The transitional layer has light scattering particles dispersed therein, a single-layer gradient index-of-refraction, a multi-layer gradient index-of-refraction, alternating layers of high and low index-of-refraction, or a combination thereof, in order to increase the transmission or reflectance of light between the two mediums.Type: GrantFiled: August 1, 2013Date of Patent: June 6, 2017Assignee: Ferro CorporationInventors: George E. Sakoske, Enos A. Axtell, III, James D. Walker
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Patent number: 9622417Abstract: The disclosure relates to a system for maintaining proper tension in the one or more fluidly movable belts during the tailgate closing process of a baling cycle. Sensors are used to obtain position data of the bale density system and tailgate system. This information is used by a controller, which then calculates if an adjustment to the speed of the tailgate is necessary to maintain proper tension in the movable belts.Type: GrantFiled: May 1, 2015Date of Patent: April 18, 2017Assignee: CNH Industrial America LLCInventors: Kevin M. Smith, James D. Walker
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Publication number: 20160326970Abstract: Emission targets, such as NOx levels, for gaseous fuelled internal combustion engines that burn a gaseous fuel in a diffusion combustion mode are increasingly more challenging to achieve. A method of fuel injection for an internal combustion engine fuelled with a gaseous fuel comprises introducing a first amount of pilot fuel in a first stage of fuel injection; introducing a first amount of main fuel (the gaseous fuel) in a second stage of fuel injection; and introducing a second amount of main fuel in a third stage of fuel injection. The first and second amounts of main fuel contribute to load and speed demand of the internal combustion engine. Engine maps calibrated for different engine performance can be employed in different regions of the load and speed range of the engine. The engine maps are blended when the engine transitions between two regions; and momentary excursions into different regions do not change the engine calibration.Type: ApplicationFiled: December 16, 2014Publication date: November 10, 2016Inventors: Wei FEI, James D. WALKER, Gordon P. MCTAGGART-COWAN, Kenneth R. MANN
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Publication number: 20160316633Abstract: The disclosure relates to a system for maintaining proper tension in the one or more fluidly movable belts during the tailgate closing process of a baling cycle. Sensors are used to obtain position data of the bale density system and tailgate system. This information is used by a controller, which then calculates if an adjustment to the speed of the tailgate is necessary to maintain proper tension in the movable belts.Type: ApplicationFiled: May 1, 2015Publication date: November 3, 2016Inventors: Kevin M. Smith, James D. Walker
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Publication number: 20160146147Abstract: A module for controlling a first fuel rail pressure in an internal combustion engine and maintaining a predetermined pressure bias with a second fuel rail pressure comprises a manifold body and several components that are mounted on the manifold body to form an unitary and independent structure that is fluidly connected to a first fuel supply and to a first fuel rail. The components that are mounted on the manifold body are a pressure regulator, a shut-off valve and a check valve and can further comprise, for example, a service valve for venting the fuel from the module and/or a sensor for measuring the pressure in the first fuel rail.Type: ApplicationFiled: June 20, 2014Publication date: May 26, 2016Inventors: Randall T. MARK, James D. WALKER
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Patent number: 9272497Abstract: A glass-flake loaded organic sealant system is useful for sealing active layers such as those in electronic devices and solar cells.Type: GrantFiled: July 22, 2011Date of Patent: March 1, 2016Assignee: Ferro CorporationInventors: Chandrashekhar S. Khadilkar, Robert P. Blonski, Srinivasan Sridharan, Jackie D. Davis, John J. Maloney, James D. Walker, Andrew M. Rohn, Jr.
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Publication number: 20160032849Abstract: A method for fuel regulation during a non-motoring operating mode of an internal combustion engine is provided. A fuel regulator employs a first fuel to regulate pressure of a second fuel. The first fuel is communicated to the fuel regulator through a first fuel circuit. The method comprises actuating a fuel injector that introduces the first fuel and the second fuel into a combustion chamber of the internal combustion engine during the non-motoring operating mode. The fuel injector is actuated with an injection command signal having a pulse width below a predetermined maximum value whereby no fuel is injected into the combustion chamber and the first fuel drains from the first fuel circuit through the fuel injector to a supply tank.Type: ApplicationFiled: March 6, 2014Publication date: February 4, 2016Inventors: Alain TOUCHETTE, James D. WALKER, Jordan HAAS
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Patent number: 9078399Abstract: An improved belt guide system has individual guide sleeves mounted on one or more of the guide rolls, one sleeve for each belt, in an agricultural round baler. Each sleeve encircles the roll surface of the guide roll and is positioned between the belt and the guide roll surface in a manner allowing relative rotational movement between the sleeve and the guide roll. Each guide sleeve is thus allowed to match the peripheral speed of the respective belt as it passes over the guide roll and allow slippage to occur between the guide roll surface and the inner circumference of the guide sleeve. Flanges extending radially outwardly on each sleeve end maintain the sleeve alignment with the respective belt.Type: GrantFiled: August 7, 2012Date of Patent: July 14, 2015Assignee: CNH Industrial America LLCInventors: Frederick R. Hubach, James D. Walker, Scott C. Simmons