Patents by Inventor Yuri Lvovsky
Yuri Lvovsky 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: 10082549Abstract: A cooling system includes a first cooling loop containing a first cryogen, the first cooling loop being in thermal communication with a superconducting magnet and being configured to provide primary cooling for the magnet and a second cooling loop also containing the first cryogen. The second cooling loop is in thermal communication with an enclosure containing a second cryogen and is configured to cool the second cryogen within the enclosure. The enclosure is in thermal communication with the superconducting magnet and is configured to provide secondary cooling for the magnet.Type: GrantFiled: January 4, 2017Date of Patent: September 25, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Yuri Lvovsky, Mark Derakhshan
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Patent number: 10042015Abstract: A dual-purpose displacer for adjusting a liquid cryogen level in a cryostat, the dual-purpose displacer includes a displacer wall having an exterior displacer surface and an interior displacer surface. The interior displacer surface defines a displacing chamber configured to contain a first portion of liquid cryogen. The exterior displacer surface is configured to displace a second portion of liquid cryogen contained in a cryogenic chamber of the cryostat. The dual-purpose displacer is disposed within the cryogenic chamber of the cryostat and configured to transfer the first portion of liquid cryogen contained within the displacing chamber to the cryogenic chamber.Type: GrantFiled: October 30, 2015Date of Patent: August 7, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Dogan Celik, Mark O. Derakhshan, Peter Jarvis, Yuri Lvovsky, Stuart Paul Feltham
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Patent number: 9874618Abstract: A control system for a superconducting magnet includes an electrically conductive lead having a first end electrically coupled to the superconducting magnet, at least one of a main power supply, a shimming power supply and a discharge module electrically coupled to a second end of the lead, and a controller in communication with the at least one of the main power supply, the shimming power supply and the discharge module. The controller is configured to monitor at least one magnet parameter value indicative of a state of the superconducting magnet and to automatically control operation of the at least one of the main power supply, the shimming power supply and the discharge module when the magnet parameter value crosses a predetermined threshold value prior to a quench.Type: GrantFiled: December 24, 2014Date of Patent: January 23, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Yuri Lvovsky, Longzhi Jiang, Mark Derakhshan, Edwin Legall
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Publication number: 20170123025Abstract: A dual-purpose displacer for adjusting a liquid cryogen level in a cryostat, the dual-purpose displacer includes a displacer wall having an exterior displacer surface and an interior displacer surface. The interior displacer surface defines a displacing chamber configured to contain a first portion of liquid cryogen. The exterior displacer surface is configured to displace a second portion of liquid cryogen contained in a cryogenic chamber of the cryostat. The dual-purpose displacer is disposed within the cryogenic chamber of the cryostat and configured to transfer the first portion of liquid cryogen contained within the displacing chamber to the cryogenic chamber.Type: ApplicationFiled: October 30, 2015Publication date: May 4, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: DOGAN CELIK, MARK O. DERAKHSHAN, PETER JARVIS, YURI LVOVSKY, STUART PAUL FELTHAM
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Publication number: 20170115366Abstract: A cooling system includes a first cooling loop containing a first cryogen, the first cooling loop being in thermal communication with a superconducting magnet and being configured to provide primary cooling for the magnet and a second cooling loop also containing the first cryogen. The second cooling loop is in thermal communication with an enclosure containing a second cryogen and is configured to cool the second cryogen within the enclosure. The enclosure is in thermal communication with the superconducting magnet and is configured to provide secondary cooling for the magnet.Type: ApplicationFiled: January 4, 2017Publication date: April 27, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: YURI LVOVSKY, MARK DERAKHSHAN
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Patent number: 9575149Abstract: A cooling system includes a first cooling loop containing a first cryogen, the first cooling loop being in thermal communication with a superconducting magnet and being configured to provide primary cooling for the magnet and a second cooling loop also containing the first cryogen. The second cooling loop is in thermal communication with an enclosure containing a second cryogen and is configured to cool the second cryogen within the enclosure. The enclosure is in thermal communication with the superconducting magnet and is configured to provide secondary cooling for the magnet.Type: GrantFiled: December 23, 2014Date of Patent: February 21, 2017Assignee: GENERAL ELECTRIC COMPANYInventors: Yuri Lvovsky, Mark Derakhshan
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Publication number: 20160187439Abstract: A control system for a superconducting magnet includes an electrically conductive lead having a first end electrically coupled to the superconducting magnet, at least one of a main power supply, a shimming power supply and a discharge module electrically coupled to a second end of the lead, and a controller in communication with the at least one of the main power supply, the shimming power supply and the discharge module. The controller is configured to monitor at least one magnet parameter value indicative of a state of the superconducting magnet and to automatically control operation of the at least one of the main power supply, the shimming power supply and the discharge module when the magnet parameter value crosses a predetermined threshold value prior to a quench.Type: ApplicationFiled: December 24, 2014Publication date: June 30, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: YURI LVOVSKY, LONGZHI JIANG, MARK DERAKHSHAN, EDWIN LEGALL
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Publication number: 20160187435Abstract: A cooling system includes a first cooling loop having a first cooling fluid configured for circulation therethrough and a second cooling loop having a second cooling fluid configured for circulation therethrough. The first cooling loop is in thermal communication with the superconducting magnet and is configured to provide primary cooling for the magnet, and the second cooling loop is in thermal communication with the superconducting magnet and is configured to provide secondary cooling for the magnet.Type: ApplicationFiled: December 29, 2014Publication date: June 30, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: LONGZHI JIANG, Yuri Lvovsky, Stuart Paul Feltham
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Publication number: 20160178716Abstract: A cooling system includes a first cooling loop containing a first cryogen, the first cooling loop being in thermal communication with a superconducting magnet and being configured to provide primary cooling for the magnet and a second cooling loop also containing the first cryogen. The second cooling loop is in thermal communication with an enclosure containing a second cryogen and is configured to cool the second cryogen within the enclosure. The enclosure is in thermal communication with the superconducting magnet and is configured to provide secondary cooling for the magnet.Type: ApplicationFiled: December 23, 2014Publication date: June 23, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: Yuri LVOVSKY, Mark DERAKHSHAN
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Patent number: 8793991Abstract: A displacer for adjusting a level of a liquid cryogen in a cryostat. The displacer including an expandable member at least partially defining a sealed chamber. The expandable member being configured to transition from a collapsed state where the sealed chamber has a smaller volume to an expanded state where the sealed chamber has a larger volume. The displacer includes a first end piece attached to a first end of the expandable member and a second end piece attached to a second end of the expandable member.Type: GrantFiled: December 3, 2009Date of Patent: August 5, 2014Assignee: General Electric CompanyInventors: Gregory Citver, William Louis Einziger, Yuri Lvovsky
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Patent number: 8729894Abstract: Systems and methods for operating a magnetic resonance imaging (MRI) during ramping are provided. One method includes reducing pressure in a cryogen vessel of an MRI system during magnet ramping. The method also includes returning pressure in the cryogen vessel to a normal operating pressure level after magnet ramping is complete.Type: GrantFiled: July 30, 2010Date of Patent: May 20, 2014Assignee: General Electric CompanyInventors: Timothy James Hollis, Yuri Lvovsky
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Patent number: 8694065Abstract: A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.Type: GrantFiled: September 23, 2011Date of Patent: April 8, 2014Assignee: General Electric CompanyInventors: Hendrik Pieter Jacobus de Bock, Jalal Hunain Zia, Ernst Wolfgang Stautner, Tao Deng, Longzhi Jiang, William Louis Einziger, Wen Shang, Yuri Lvovsky, Kathleen Melanie Amm, Gregory Citver, Tao Zhang
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Patent number: 8604793Abstract: A method of shimming a superconducting magnet assembly that includes a cryostat and a superconducting magnet configured to be installed in the cryostat. The method includes determining a plurality of field inhomogeneity characteristics of the superconducting magnet while the superconducting magnet is at room temperature and prior to the superconducting magnet being sealed in the cryostat, and installing an initial set of passive shims inside the cryostat while the superconducting magnet is at room temperature, the initial set of passive shims reducing the determined field inhomogeneity characteristics when the superconducting magnet is operating at a normal operational temperature.Type: GrantFiled: October 21, 2010Date of Patent: December 10, 2013Assignee: General Electric CompanyInventors: Weijun Shen, Yuri Lvovsky, Zhenyu Zhang
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Patent number: 8542015Abstract: A superconducting magnet assembly comprising a plurality of superconducting magnet coil portions forming a coil series circuit to provide a magnetic field, a power supply to supply power to the plurality of superconducting magnet coil portions during a magnet ramp mode of operation, and a ramp switch coupled to the superconducting magnet coil portions, wherein the ramp switch is configured to be open during a magnet ramp mode and closed during a persistent mode. A dump resistor is disposed externally to the vessel and is connectable by the ramp switch to the superconducting magnet coil portions. Further, a controller is coupled to at least one superconducting magnet coil portion and the ramp switch and is configured to detect a quench onset condition in the at least one superconducting magnet coil portion and to open the ramp switch upon detection of the quench onset condition in order to dump magnet energy.Type: GrantFiled: January 19, 2011Date of Patent: September 24, 2013Assignee: General Electric CompanyInventors: Yuri Lvovsky, Weijun Shen, Jian-She Wang
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Patent number: 8415952Abstract: A superconducting magnet coil interface and method providing coil stability are provided. A superconducting coil arrangement includes a superconducting coil and a thermal interface coupled to the superconducting coil. The thermal interface is configured to intercept frictional heat before reaching the superconducting coil. The superconducting coil arrangement further includes a plurality of channels extending within at least a portion of the thermal interface and towards the superconducting coil. The plurality of channels are configured to receive therein a cooling liquid.Type: GrantFiled: December 23, 2009Date of Patent: April 9, 2013Assignee: General Electric CompanyInventor: Yuri Lvovsky
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Publication number: 20130079229Abstract: A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Hendrik Pieter Jacobus de Bock, Jalal Hunain Zia, Ernst Wolfgang Stautner, Tao Deng, Longzhi Jiang, William Louis Einziger, Wen Shang, Yuri Lvovsky, Kathleen Melanie Amm, Gregory Citver, Tao Zhang
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Patent number: 8314615Abstract: An MRI apparatus and method comprises an MRI system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images. The magnet comprises a main coil former and a shield coil former arranged radially around the bore of the magnet, wherein a radius of the shield coil former is greater than a radius of the main coil former. The magnet also includes at least one main coil affixed to the main coil former, at least one shield coil affixed to the shield coil former, and at least one structural member affixed to the main coil former and to the shield coil former to provide structural support and enable longitudinal alignment adjustment between the main coil former and the shield coil former.Type: GrantFiled: December 22, 2009Date of Patent: November 20, 2012Assignee: General Electric CompanyInventors: Longzhi Jiang, John Scaturro, Jr., William Einziger, Yuri Lvovsky, Robbi McDonald, Xiaoxue Diao
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Publication number: 20120182012Abstract: A superconducting magnet assembly comprising a plurality of superconducting magnet coil portions forming a coil series circuit to provide a magnetic field, a power supply to supply power to the plurality of superconducting magnet coil portions during a magnet ramp mode of operation, and a ramp switch coupled to the superconducting magnet coil portions, wherein the ramp switch is configured to be open during a magnet ramp mode and closed during a persistent mode. A dump resistor is disposed externally to the vessel and is connectable by the ramp switch to the superconducting magnet coil portions. Further, a controller is coupled to at least one superconducting magnet coil portion and the ramp switch and is configured to detect a quench onset condition in the at least one superconducting magnet coil portion and to open the ramp switch upon detection of the quench onset condition in order to dump magnet energy.Type: ApplicationFiled: January 19, 2011Publication date: July 19, 2012Inventors: Yuri Lvovsky, Weijun Shen, Jian-She Wang
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Publication number: 20120098538Abstract: A method of shimming a superconducting magnet assembly that includes a cryostat and a superconducting magnet configured to be installed in the cryostat. The method includes determining a plurality of field inhomogeneity characteristics of the superconducting magnet while the superconducting magnet is at room temperature and prior to the superconducting magnet being sealed in the cryostat, and installing an initial set of passive shims inside the cryostat while the superconducting magnet is at room temperature, the initial set of passive shims reducing the determined field inhomogeneity characteristics when the superconducting magnet is operating at a normal operational temperature.Type: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: WEIJUN SHEN, YURI LVOVSKY, ZHENYU ZHANG
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Publication number: 20120028805Abstract: Systems and methods for operating a magnetic resonance imaging (MRI) during ramping are provided. One method includes reducing pressure in a cryogen vessel of an MRI system during magnet ramping. The method also includes returning pressure in the cryogen vessel to a normal operating pressure level after magnet ramping is complete.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Inventors: Timothy James Hollis, Yuri Lvovsky