Patents by Inventor John Lewis Green
John Lewis Green 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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Patent number: 9327249Abstract: Systems and methods are provided for humidifying a gas stream. Methods for providing a humidified gas stream comprise providing a dry gas, directing the dry gas to a humidification device, humidifying the dry gas to provide a humidified gas stream having an amount of moisture in excess of a predetermined amount, directing the humidified gas stream to a cooling device, cooling the humidified gas to a predetermined temperature, and directing the cooled humidified gas to a point of usage. Systems for providing a humidified gas stream comprise a dry gas stream, a humidification device configured to receive and humidify the dry gas stream to form a humidified gas stream having an amount of moisture in excess of a predetermined amount, and a cooling device configured to receive and cool the humidified gas stream to a predetermined temperature to form a cooled humidified gas stream.Type: GrantFiled: April 17, 2012Date of Patent: May 3, 2016Assignee: Air Products and Chemicals, Inc.Inventors: Robert Scott Albro, Anna K. Wehr-Aukland, John Lewis Green, Donald James Bowe
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Patent number: 9290823Abstract: Described herein are a method, an apparatus, and a system for metal processing that improves one or more properties of a sintered metal part by controlling the process conditions of the cooling zone of a continuous furnace using one or more cryogenic fluids. In one aspect, there is provided a method comprising: providing a furnace wherein the metal part is passed therethough on a conveyor belt and comprises a hot zone and a cooling zone wherein the cooling zone has a first temperature; and introducing a cryogenic fluid into the cooling zone where the cryogenic fluid reduces the temperature of the cooling zone to a second temperature, wherein at least a portion of the cryogenic fluid provides a vapor within the cooling zone and cools the metal parts passing therethrough at an accelerated cooling rate.Type: GrantFiled: February 17, 2011Date of Patent: March 22, 2016Assignee: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, Ranajit Ghosh, Lisa Ann Mercando, Xiaoyi He, John Lewis Green, David Scott Nelson
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Patent number: 9200356Abstract: A nozzle and process are set forth for contacting a cryogenic liquid and a gas, and discharging the resulting fluid through the nozzle. In one embodiment, the ratio of the discharged fluid's liquid component to its gaseous component is controlled as a function of the gas pressure.Type: GrantFiled: August 28, 2007Date of Patent: December 1, 2015Assignee: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, Jr., John Lewis Green
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Patent number: 9109277Abstract: Described herein is a method that can be used for heat treating a metal in at least one of the following processes: carburizing, carbonitriding, nitrocarburizing, and neutral carbon potential annealing operations that are used in a 1 atmosphere pressure furnace and in an atmosphere that is oxygen free and comprises nitrogen and at least one hydrocarbon.Type: GrantFiled: December 28, 2011Date of Patent: August 18, 2015Assignee: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, Xiaolan Wang, Guido Plicht, John Lewis Green, Anna K. Wehr-Aukland
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Patent number: 9016076Abstract: A fluid spray device system (1) that maintains a resultant fluid discharge, or a material onto which the resultant fluid is discharged, within a predetermined range of a set-point temperature by regulating the flow rate of a throttling gas using a proportional valve (22). The resultant fluid has throttling gas and cryogenic fluid components. Both the throttling gas and cryogenic fluid are preferably supplied from a single tank (11) and the cryogenic fluid supply is pressure-regulated and includes a triaxial delivery hose (33) having a return line with a back-pressure regulator (54).Type: GrantFiled: August 27, 2008Date of Patent: April 28, 2015Assignee: Air Products and Chemicals, Inc.Inventors: Kevin John Giardiniere, John Lewis Green, Ranajit Ghosh, Daniel James Gibson, Zbigniew Zurecki
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Patent number: 8986605Abstract: Disclosed herein is a method and gas atmosphere for a metal component in a continuous furnace. In one embodiment, the method and gas atmosphere comprises the use of an effective amount, or about 1 to about 10 percent volume of endo-gas, into an atmosphere comprising nitrogen and hydrogen. In another embodiment, there is provided a method sintering metal components in a furnace at a one or more operating temperatures comprising: providing a furnace comprising a belt comprising a wire mesh material wherein the metal components are supported thereupon; and sintering the components in the furnace in an atmosphere comprising nitrogen, hydrogen, and effective amount of endothermic gas at the one or more operating temperatures ranging from about 1800° F. to about 2200° F. wherein the amount of endothermic gas in the atmosphere is such that it is oxidizing to the wire mesh material and reducing to the metal components.Type: GrantFiled: December 13, 2010Date of Patent: March 24, 2015Assignee: Air Products and Chemicals, Inc.Inventors: Donald James Bowe, Anna K. Wehr-Aukland, John Lewis Green
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Publication number: 20130270724Abstract: Systems and methods are provided for humidifying a gas stream. Methods for providing a humidified gas stream comprise providing a dry gas, directing the dry gas to a humidification device, humidifying the dry gas to provide a humidified gas stream having an amount of moisture in excess of a predetermined amount, directing the humidified gas stream to a cooling device, cooling the humidified gas to a predetermined temperature, and directing the cooled humidified gas to a point of usage. Systems for providing a humidified gas stream comprise a dry gas stream, a humidification device configured to receive and humidify the dry gas stream to form a humidified gas stream having an amount of moisture in excess of a predetermined amount, and a cooling device configured to receive and cool the humidified gas stream to a predetermined temperature to form a cooled humidified gas stream.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Robert Scott Albro, Anna K. Wehr-Aukland, John Lewis Green, Donald James Bowe
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Publication number: 20130008565Abstract: Described herein is a method that can be used for heat treating a metal in at least one of the following processes: carburizing, carbonitriding, nitrocarburizing, and neutral carbon potential annealing operations that are used in a 1 atmosphere pressure furnace and in an atmosphere that is oxygen free and comprises nitrogen and at least one hydrocarbon.Type: ApplicationFiled: December 28, 2011Publication date: January 10, 2013Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Zbigniew Zurecki, Xiaolan Wang, Guido Plicht, John Lewis Green, Anna K. Wehr-Aukland
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Patent number: 8268094Abstract: A gas injector including in which a gas is passed through high-voltage/low-current electrical discharges before being discharged into the chamber of a thermal treatment furnace. The electrical activation of the gas accelerates desirable reactions between the gas, gases in the furnace chamber, and the chamber workload. Preferably, a hot electrode is electrically charged and the other parts of the gas injector and the furnace are grounded. Also provided is a method for activating an atmosphere within the reaction chamber of a controlled-atmosphere reactor.Type: GrantFiled: May 1, 2008Date of Patent: September 18, 2012Assignee: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, Jr., John Lewis Green
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Publication number: 20120216550Abstract: A fluid spray device system (1) that maintains a resultant fluid discharge, or a material onto which the resultant fluid is discharged, within a predetermined range of a set-point temperature by regulating the flow rate of a throttling gas using a proportional valve (22). The resultant fluid has throttling gas and cryogenic fluid components. Both the throttling gas and cryogenic fluid are preferably supplied from a single tank (11) and the cryogenic fluid supply is pressure-regulated and includes a triaxial delivery hose (33) having a return line with a back-pressure regulator (54).Type: ApplicationFiled: August 27, 2008Publication date: August 30, 2012Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Kevin John Giardiniere, John Lewis Green, Ranajit Gosh, Daniel James Gibson, Zbigniew Zurecki
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Publication number: 20120055592Abstract: Described herein are a method, an apparatus, and a system for metal processing that improves one or more properties of a sintered metal part by controlling the process conditions of the cooling zone of a continuous furnace using one or more cryogenic fluids. In one aspect, there is provided a method comprising: providing a furnace wherein the metal part is passed therethough on a conveyor belt and comprises a hot zone and a cooling zone wherein the cooling zone has a first temperature; and introducing a cryogenic fluid into the cooling zone where the cryogenic fluid reduces the temperature of the cooling zone to a second temperature, wherein at least a portion of the cryogenic fluid provides a vapor within the cooling zone and cools the metal parts passing therethrough at an accelerated cooling rate.Type: ApplicationFiled: February 17, 2011Publication date: March 8, 2012Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Zbigniew Zurecki, Ranajit Ghosh, Lisa Ann Mercando, Xiaoyi He, John Lewis Green, David Scott Nelson
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Publication number: 20110318216Abstract: Disclosed herein is a method and gas atmosphere for a metal component in a continuous furnace. In one embodiment, the method and gas atmosphere comprises the use of an effective amount, or about 1 to about 10 percent volume of endo-gas, into an atmosphere comprising nitrogen and hydrogen. In another embodiment, there is provided a method sintering metal components in a furnace at a one or more operating temperatures comprising: providing a furnace comprising a belt comprising a wire mesh material wherein the metal components are supported thereupon; and sintering the components in the furnace in an atmosphere comprising nitrogen, hydrogen, and effective amount of endothermic gas at the one or more operating temperatures ranging from about 1800° F. to about 2200° F. wherein the amount of endothermic gas in the atmosphere is such that it is oxidizing to the wire mesh material and reducing to the metal components.Type: ApplicationFiled: December 13, 2010Publication date: December 29, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Donald James Bowe, Anna K. Wehr-Aukland, John Lewis Green
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Publication number: 20110083447Abstract: An apparatus and method for monitoring and/or controlling cryogenic cooling by measuring the opacity of the vapor cloud (113) generated from a cryogenic cooling device (112). The opacity is determined by measuring the reduction in intensity of a light beam (127) passed through the vapor cloud (113). The opacity measurements are used to control an operating parameter of the system, such as the cooling rate of the cryogenic cooling device (112). The opacity measurements may be normalized to compensate for variables, other than temperature of the workpiece (119) and cooling rate, which may affect the opacity of the vapor cloud (113).Type: ApplicationFiled: August 27, 2008Publication date: April 14, 2011Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, John Lewis Green
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Publication number: 20100275620Abstract: Apparatus that prevents the buildup of frost or ice on plumbing in a cryogenic delivery system (10) and on cryogenically cold surfaces (14a) exposed to ambient air. The plumbing is sealed within a casing that includes a microporous membrane (14). A purge gas stream is fed into the casing at an effective pressure, causing the purge gas to diffuse through the microporous membrane (14) and prevent frost or ice formation on an exterior surface (14a) of the apparatus or around a cryogenic discharge nozzle (420).Type: ApplicationFiled: August 27, 2008Publication date: November 4, 2010Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, JR., John Lewis Green
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Publication number: 20080283153Abstract: A gas injector including in which a gas is passed through high-voltage/low-current electrical discharges before being discharged into the chamber of a thermal treatment furnace. The electrical activation of the gas accelerates desirable reactions between the gas, gases in the furnace chamber, and the chamber workload. Preferably, a hot electrode is electrically charged and the other parts of the gas injector and the furnace are grounded.Type: ApplicationFiled: May 1, 2008Publication date: November 20, 2008Applicant: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, JR., John Lewis Green
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Publication number: 20080048047Abstract: A nozzle and process are set forth for contacting a cryogenic liquid and a gas, and discharging the resulting fluid through the nozzle. In one embodiment, the ratio of the discharged fluid's liquid component to its gaseous component is controlled as a function of the gas pressure.Type: ApplicationFiled: August 28, 2007Publication date: February 28, 2008Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Zbigniew Zurecki, Robert Ellsworth Knorr, John Lewis Green
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Patent number: 5738281Abstract: Use of a shrouding gas to combine with and protect a turbulent gas jet issuing from an orifice enables control of a gas jet stream composition downstream from the orifice. The natural aspiration rate of the gas jet is used to determine the flowrate of shrouding gas which is introduced around the gas jet in a soft gas cushion which does not disrupt the flow pattern of the gas jet but instead is entrained into the jet stream to the exclusion of ambient gases in the atmosphere. Preferably shrouding gas is replaced at least at the rate at which it is entrained. Apparatus for this process uses a porous shroud, preferably of metal foam, through which shrouding gas flows evenly around the gas jet as it issues from a nozzle orifice. Provision for tangential entry of shrouding gas into a manifold which feeds the porous shroud prevents the shrouding gas from impinging upon the porous shroud and causing uneven flow around the gas jet.Type: GrantFiled: May 8, 1997Date of Patent: April 14, 1998Assignee: Air Products and Chemicals, Inc.Inventors: Zbigniew Zurecki, John Joseph Kaiser, John Lewis Green
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Patent number: 5662266Abstract: Use of a shrouding gas to combine with and protect a turbulent gas jet issuing from an orifice enables control of a gas jet stream composition downstream from the orifice. The natural aspiration rate of the gas jet is used to determine the flowrate of shrouding gas which is introduced around the gas jet in a soft gas cushion which does not disrupt the flow pattern of the gas jet but instead is entrained into the jet stream to the exclusion of ambient gases in the atmosphere. Preferably shrouding gas is replaced at least at the rate at which it is entrained. Apparatus for this process uses a porous shroud, preferably of metal foam, through which shrouding gas flows evenly around the gas jet as it issues from a nozzle orifice. Provision for tangential entry of shrouding gas into a manifold which feeds the porous shroud prevents the shrouding gas from impinging upon the porous shroud and causing uneven flow around the gas jet.Type: GrantFiled: January 4, 1995Date of Patent: September 2, 1997Inventors: Zbigniew Zurecki, John Joseph Kaiser, John Lewis Green