Patents by Inventor James Spence
James Spence 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: 11850842Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit comprising air flow guide structure extending into the opening of the carrier plate between the carrier plate and the printhead to flow air through the opening. The air flow control system controls the air supply unit to selectively flow the air based on a location of a print medium relative to the printhead.Type: GrantFiled: March 29, 2021Date of Patent: December 26, 2023Assignee: XEROX CORPORATIONInventors: Patrick Jun Howe, John Patrick Baker, Brian M. Balthasar, Glenn Batchelor, Anthony Salvatore Condello, Ali R. Dergham, Timothy P. Foley, Douglas K. Herrmann, Richard A. Kalb, Peter John Knausdorf, Jason M. LeFevre, Jack T. Lestrange, Chu-Heng Liu, Paul J. McConville, Seemit Praharaj, Palghat S. Ramesh, Joseph C. Sheflin, Emmett James Spence, Robert Jian Zhang, Megan Zielenski
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Patent number: 11772391Abstract: A printing system comprises a media transport device which holds print media, such as paper, against a movable support surface, such as a belt, by vacuum suction through holes in the media transport device and transports the print media though a deposition region of one or more printheads, which deposit a print fluid, such as ink, on the print media. The printing system comprises an airflow control device comprising one or more dampers that are moveable in a cross-process direction between an undeployed configuration and a deployed configuration, each damper blocking at least one row of the holes in the deployed configuration. The airflow control device also comprises one or more actuators to move the damper(s). The actuator(s) are controlled to selectively move the damper(s) between the undeployed and deployed configuration based on a position of an inter-media zone between adjacent print media held against the movable support surface.Type: GrantFiled: March 30, 2021Date of Patent: October 3, 2023Assignee: Xerox CorporationInventors: Megan Zielenski, John Patrick Baker, Brian M. Balthasar, Emmett James Spence, Robert Jian Zhang
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Patent number: 11697296Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device comprises a movable support surface to transport a print medium along a process direction through the deposition region, the media transport device holding the print medium against the movable support surface by vacuum suction. The air flow control system is arranged to selectively flow air through the opening of the carrier plate between the carrier plate and the printhead based on a location of a print medium transported by the media transport device relative to the printhead.Type: GrantFiled: March 29, 2021Date of Patent: July 11, 2023Assignee: Xerox CorporationInventors: Douglas K. Herrmann, Linn C. Hoover, Patrick Jun Howe, Joseph C. Sheflin, Robert Jian Zhang, John Patrick Baker, Brian M. Balthasar, Glenn Batchelor, Anthony Salvatore Condello, Ali R. Dergham, Timothy P. Foley, Richard A. Kalb, Peter John Knausdorf, Jason M. LeFevre, Jack T. Lestrange, Chu-Heng Liu, Paul J. McConville, Seemit Praharaj, Palghat S. Ramesh, Erwin Ruiz, Emmett James Spence, Rachel Lynn Tanchak, Kareem Tawil, Carlos M. Terrero, Megan Zielenski
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Publication number: 20220314649Abstract: A printing system comprises an ink deposition assembly, a media transport device, and an airflow control system. The ink deposition assembly comprises printheads to deposit a print fluid, such as ink, on print media, such as paper, transported through a deposition region. The media transport device holds the print media against a movable support surface, such as a belt, by vacuum suction through holes in the media transport device and transports the print media though the deposition region. The airflow control system comprises one or more valves that are actuatable between an open state and a closed state, each valve blocking a subset of the holes in the closed state. The airflow control system also comprises one or more actuators to actuate the valve(s). The actuator(s) selectively actuate the valve(s) between the open and closed states based on a position of an inter-media zone between adjacent print media.Type: ApplicationFiled: March 30, 2021Publication date: October 6, 2022Applicant: XEROX CORPORATIONInventors: John Patrick BAKER, Brian M. BALTHASAR, Emmett James SPENCE, Robert Jian ZHANG, Megan ZIELENSKI
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Publication number: 20220314648Abstract: A printing system comprises a media transport device which holds print media, such as paper, against a movable support surface, such as a belt, by vacuum suction through holes in the media transport device and transports the print media though a deposition region of one or more printheads, which deposit a print fluid, such as ink, on the print media. The printing system comprises an airflow control device comprising one or more dampers that are moveable in a cross-process direction between an undeployed configuration and a deployed configuration, each damper blocking at least one row of the holes in the deployed configuration. The airflow control device also comprises one or more actuators to move the damper(s). The actuator(s) are controlled to selectively move the damper(s) between the undeployed and deployed configuration based on a position of an inter-media zone between adjacent print media held against the movable support surface.Type: ApplicationFiled: March 30, 2021Publication date: October 6, 2022Applicant: XEROX CORPORATIONInventors: Megan ZIELENSKI, John Patrick BAKER, Brian M. BALTHASAR, Emmett James SPENCE, Robert Jian ZHANG
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Publication number: 20220314655Abstract: A printing system comprises an ink deposition assembly and a media transport assembly. The ink deposition assembly comprises a printhead arranged to eject a print fluid to a deposition region of the ink deposition assembly. The media transport assembly comprises a vacuum source and a movable support surface. The movable support surface comprises valves having holes through the media support surface. The media transport assembly is configured to hold one or more print media against the movable support surface by vacuum suction communicated from the vacuum source through valves. The valves are each configured to transition between a closed state in which airflow through the hole of the respective valve is prevented and an open state in which airflow through the hole of the respective valve is allowed.Type: ApplicationFiled: March 31, 2021Publication date: October 6, 2022Applicant: XEROX CORPORATIONInventors: Brian M. BALTHASAR, John Patrick BAKER, Emmett James SPENCE, Robert Jian ZHANG, Megan ZIELENSKI
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Publication number: 20220305819Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit comprising air flow guide structure extending into the opening of the carrier plate between the carrier plate and the printhead to flow air through the opening. The air flow control system controls the air supply unit to selectively flow the air based on a location of a print medium relative to the printhead.Type: ApplicationFiled: March 29, 2021Publication date: September 29, 2022Applicant: XEROX CORPORATIONInventors: Patrick Jun HOWE, John Patrick BAKER, Brian M. BALTHASAR, Glenn BATCHELOR, Anthony Salvatore CONDELLO, Ali R. DERGHAM, Timothy P. FOLEY, Douglas K. HERRMANN, Richard A. KALB, Peter John KNAUSDORF, Jason M. LeFEVRE, Jack T. LESTRANGE, Chu-Heng LIU, Paul J. McCONVILLE, Seemit PRAHARAJ, Palghat S. RAMESH, Joseph C. SHEFLIN, Emmett James SPENCE, Robert Jian ZHANG, Megan ZIELENSKI
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Publication number: 20220305815Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device comprises a movable support surface to transport a print medium along a process direction through the deposition region, the media transport device holding the print medium against the movable support surface by vacuum suction. The air flow control system is arranged to selectively flow air through the opening of the carrier plate between the carrier plate and the printhead based on a location of a print medium transported by the media transport device relative to the printhead.Type: ApplicationFiled: March 29, 2021Publication date: September 29, 2022Applicant: XEROX CORPORATIONInventors: Douglas K. HERRMANN, Linn C. HOOVER, Patrick Jun HOWE, Joseph C. SHEFLIN, Robert Jian ZHANG, John Patrick BAKER, Brian M. BALTHASAR, Glenn BATCHELOR, Anthony Salvatore CONDELLO, Ali R. DERGHAM, Timothy P. FOLEY, Richard A. KALB, Peter John KNAUSDORF, Jason M. LeFEVRE, Jack T. LESTRANGE, Chu-Heng LIU, Paul J. McCONVILLE, Seemit PRAHARAJ, Palghat S. RAMESH, Erwin RUIZ, Emmett James SPENCE, Rachel Lynn TANCHAK, Kareem TAWIL, Carlos M. TERRERO, Megan ZIELENSKI
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Patent number: 11332653Abstract: The present invention relates to drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product.Type: GrantFiled: July 30, 2018Date of Patent: May 17, 2022Assignee: SHELL OIL COMPANYInventors: Burnell Lee, David Matthew Brown, Graham Francis Whale, Michael James Spence, Delina Yvonne-Marie de Souza Lyon
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Patent number: 11322905Abstract: A single longitudinal mode ring Raman laser including: a pump source outputting a pump light power, resonantly coupled to a first ring resonator; a optical measurement and piezo-actuator for stabilising the resonant coupling of the pump light power to a first ring resonator; a first ring resonator including a Raman gain medium, wherein the Raman gain medium receives the pump light power and undergoes Raman lasing generating resonated Stokes power at the corresponding Stokes output wavelength; the first ring resonator acting as a feedback loop for the pump light power and the resonated Stokes power and outputting a portion of the Stokes power as the laser output.Type: GrantFiled: December 22, 2017Date of Patent: May 3, 2022Assignee: Macquarie UniversityInventors: David James Spence, Ondrej Kitzler, Jipeng Lin, Richard Paul Mildren, Helen M. Pask, Graeme P. A. Malcolm, Nils Hempler, Stephen Webster
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Patent number: 11221579Abstract: A printer for producing a print media moving in a process direction including a print engine, a fuser, a full width array and a duplexing path. The print engine is operatively arranged to receive the print media and to apply a first dry marking material to a first surface of the print media. The fuser is arranged subsequently to the print engine in the process direction and is operatively arranged to receive the print media with the first dry marking material applied to the first surface of the print media and to fix the first dry marking material on the first surface using at least one of heat and pressure. The full width array is arranged subsequently to the fuser and is operatively arranged to obtain a first image of the first surface of the print media, the first image being used to quantify a flatness of the print media and/or image quality of the first image. The duplexing path is arranged subsequently to the full width array.Type: GrantFiled: November 5, 2018Date of Patent: January 11, 2022Assignee: Xerox CorporationInventors: Eliud Robles Flores, James A. Spence, William G. Osbourne, Dragana Pavlovic, Michael J. Martin, David C. Craig, Roberto A. Irizarry
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Patent number: 11028705Abstract: A transition piece can include: an inner transition piece providing a gas channel; a plurality of cooling rings disposed on the inner transition piece; a plurality of film holes formed on the inner transition piece; and a plurality of impingement holes formed on the plurality of cooling rings, wherein the plurality of film holes are arranged to correspond to the plurality of cooling rings. Each of the plurality of cooling rings includes a cavity such that the plurality of film holes connect the cavity to the gas channel and the plurality of impingement holes connect the cavity to an outside of the inner transition piece.Type: GrantFiled: March 16, 2018Date of Patent: June 8, 2021Assignee: Doosan Heavy Industries Construction Co., Ltd.Inventors: Esam Abu-Irshaid, Michael Brody, Kevin James Spence
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Publication number: 20210122964Abstract: The present invention relates to drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product.Type: ApplicationFiled: July 30, 2018Publication date: April 29, 2021Applicant: Shell Oil CompanyInventors: Burnell LEE, David Matthew BROWN, Graham Francis WHALE, Michael James SPENCE, Delina Yvonne-Marie de Souza LYON
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Publication number: 20210075182Abstract: A single longitudinal mode ring Raman laser including: a pump source outputting a pump light power, resonantly coupled to a first ring resonator; a optical measurement and piezo-actuator for stabilising the resonant coupling of the pump light power to a first ring resonator; a first ring resonator including a Raman gain medium, wherein the Raman gain medium receives the pump light power and undergoes Raman lasing generating resonated Stokes power at the corresponding Stokes output wavelength; the first ring resonator acting as a feedback loop for the pump light power and the resonated Stokes power and outputting a portion of the Stokes power as the laser output.Type: ApplicationFiled: December 22, 2017Publication date: March 11, 2021Applicant: Macquarie UniversityInventors: David James Spence, Ondrej Kitzler, Jipeng Lin, Richard Paul Mildren, Helen M. Pask, Graeme P. A. Malcolm, Nils Hempler, Stephen Webster
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Patent number: 10944232Abstract: A frequency electromagnetic radiation generation system including: a non linear crystal producing THz frequency electromagnetic radiation; a fundamental beam that interacts with the non linear crystal thereby emitting a THz frequency electromagnetic radiation emission; a silicon intermediary coupled to the non linear crystal for output channeling the THz frequency electromagnetic radiation emission to an output environment; the system utilising a fundamental beam which has a photon energy below the bandgap energy of silicon.Type: GrantFiled: March 23, 2018Date of Patent: March 9, 2021Assignee: Macquarie UniversityInventors: Andrew Lee, Helen M. Pask, David James Spence
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Publication number: 20200142341Abstract: A printer for producing a print media moving in a process direction including a print engine, a fuser, a full width array and a duplexing path. The print engine is operatively arranged to receive the print media and to apply a first dry marking material to a first surface of the print media. The fuser is arranged subsequently to the print engine in the process direction and is operatively arranged to receive the print media with the first dry marking material applied to the first surface of the print media and to fix the first dry marking material on the first surface using at least one of heat and pressure. The full width array is arranged subsequently to the fuser and is operatively arranged to obtain a first image of the first surface of the print media, the first image being used to quantify a flatness of the print media and/or image quality of the first image. The duplexing path is arranged subsequently to the full width array.Type: ApplicationFiled: November 5, 2018Publication date: May 7, 2020Inventors: Eliud Robles Flores, James A. Spence, William G. Osbourne, Dragana Pavlovic, Michael J. Martin, David C. Craig, Roberto A. Irizarry
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Patent number: 10590797Abstract: A combustion system can include: a liner defining a combustion chamber; a casing covering the combustion chamber; a first tube disposed in the liner; a machined union disposed inside the casing and connected to the first tube; a second tube passing through the casing and connected to the machined union; a sensor housing disposed outside the casing and connected to the second tube; and an infinite tube connected to the sensor housing.Type: GrantFiled: March 21, 2018Date of Patent: March 17, 2020Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Esam Abu-Irshaid, Kevin James Spence
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Publication number: 20200014166Abstract: A frequency electromagnetic radiation generation system including: a non linear crystal producing THz frequency electromagnetic radiation; a fundamental beam that interacts with the non linear crystal thereby emitting a THz frequency electromagnetic radiation emission; a silicon intermediary coupled to the non linear crystal for output channeling the THz frequency electromagnetic radiation emission to an output environment; the system utilising a fundamental beam which has a photon energy below the bandgap energy of silicon.Type: ApplicationFiled: March 23, 2018Publication date: January 9, 2020Inventors: Andrew LEE, Helen M. PASK, David James SPENCE
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Publication number: 20190292935Abstract: A combustion system can include: a liner defining a combustion chamber; a casing covering the combustion chamber; a first tube disposed in the liner; a machined union disposed inside the casing and connected to the first tube; a second tube passing through the casing and connected to the machined union; a sensor housing disposed outside the casing and connected to the second tube; and an infinite tube connected to the sensor housing.Type: ApplicationFiled: March 21, 2018Publication date: September 26, 2019Inventors: ESAM ABU-IRSHAID, KEVIN JAMES SPENCE
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Publication number: 20190284944Abstract: A transition piece can include: an inner transition piece providing a gas channel; a plurality of cooling rings disposed on the inner transition piece; a plurality of film holes formed on the inner transition piece; and a plurality of impingement holes formed on the plurality of cooling rings, wherein the plurality of film holes are arranged to correspond to the plurality of cooling rings. Each of the plurality of cooling rings includes a cavity such that the plurality of film holes connect the cavity to the gas channel and the plurality of impingement holes connect the cavity to an outside of the inner transition piece.Type: ApplicationFiled: March 16, 2018Publication date: September 19, 2019Inventors: ESAM ABU-IRSHAID, MICHAEL BRODY, KEVIN JAMES SPENCE