Patents by Inventor Kiyoung Chung
Kiyoung Chung 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: 20170350133Abstract: The present invention relates to a large-sized external awning system which includes a winch provided at an upper story, a rooftop or the ground of a high-rise building, two guide wires spaced apart at a predetermined distance to be provided in parallel, a plurality of raising and lowering rods provided with wire-passing holes through which the guide wires pass such that the raising and lowering rods are raised and lowered along the guide wires, and an awning coupled to the raising and lowering rods and unfolded so as to block the sunlight when the raising and lowering rods are spaced apart from each other.Type: ApplicationFiled: September 25, 2015Publication date: December 7, 2017Inventor: Kiyoung CHUNG
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Patent number: 8362638Abstract: A marine vessel power and propulsion system that provides a vessel-wide uninterruptible power supply is described. The power and propulsion system includes a propulsion system including a prime mover coupled to a motor/generator and a propulsion device. The motor/generator is configured to be driven by the prime mover and to generate alternating current (AC) electric power. The power and propulsion system also includes a ship-service electrical system including a generator set and a ship-service bus. The generator set is configured to generate ship-service electric power for distribution over the ship-service bus. The power and propulsion system also includes a bi-directional converter configured to couple the propulsion system to the ship-service electrical system and to convert AC electric power generated by the propulsion system to ship-service electric power for distribution over the ship-service electrical system.Type: GrantFiled: March 16, 2012Date of Patent: January 29, 2013Assignee: General Electric CompanyInventors: Paul R. Gemin, Ralph Teichmann, Kiyoung Chung
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Publication number: 20120175947Abstract: A marine vessel power and propulsion system that provides a vessel-wide uninterruptible power supply is described. The power and propulsion system includes a propulsion system including a prime mover coupled to a motor/generator and a propulsion device. The motor/generator is configured to be driven by the prime mover and to generate alternating current (AC) electric power. The power and propulsion system also includes a ship-service electrical system including a generator set and a ship-service bus. The generator set is configured to generate ship-service electric power for distribution over the ship-service bus. The power and propulsion system also includes a bi-directional converter configured to couple the propulsion system to the ship-service electrical system and to convert AC electric power generated by the propulsion system to ship-service electric power for distribution over the ship-service electrical system.Type: ApplicationFiled: March 16, 2012Publication date: July 12, 2012Applicant: General Electric CompanyInventors: Paul R. Gemin, Ralph Teichmann, Kiyoung Chung
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Patent number: 8159082Abstract: A marine vessel power and propulsion system that provides a vessel-wide uninterruptible power supply is described. The power and propulsion system includes a propulsion system including a prime mover coupled to a motor/generator and a propulsion device. The motor/generator is configured to be driven by the prime mover and to generate alternating current (AC) electric power. The power and propulsion system also includes a ship-service electrical system including a generator set and a ship-service bus. The generator set is configured to generate ship-service electric power for distribution over the ship-service bus. The power and propulsion system also includes a bi-directional converter configured to couple the propulsion system to the ship-service electrical system and to convert AC electric power generated by the propulsion system to ship-service electric power for distribution over the ship-service electrical system.Type: GrantFiled: September 5, 2008Date of Patent: April 17, 2012Assignee: General Electric CompanyInventors: Paul R. Gemin, Ralph Teichmann, Kiyoung Chung
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Patent number: 7827803Abstract: A method for using an aerodynamic stability management system is disclosed. The method includes placing at least one pressure sensor in a compressor, the at least one pressure sensor communicating with an aerodynamic stability management system controller and monitoring gas turbine engine performance using the aerodynamic stability management system controller. The controller includes a memory, an input/output interface and a processor. The method also includes defining a correlation threshold value and calculating a correlation measure using a plurality of pressure signals generated by the at least one pressure sensor and comparing the correlation measure with the correlation threshold value. When the correlation measure is less than the correlation threshold value a corrective action is implemented.Type: GrantFiled: September 27, 2006Date of Patent: November 9, 2010Assignee: General Electric CompanyInventors: Aspi Rustom Wadia, David K. Christensen, Andrew Breeze-Stringfellow, Kiyoung Chung, Matthew William Wiseman, Peter Nicholas Szucs
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Patent number: 7791235Abstract: A system for transferring torque between a pair of independently, concurrently rotating shafts of a turbofan engine includes a magnetic gearbox. The magnetic gearbox has a first ring structure, a second ring structure and an intermediate ring structure. Each ring structure has an annular aperture therethrough and a plurality of permanent magnets embedded therein. The intermediate ring structure is disposed between the first and the second ring structures. Each ring structure is coaxially concentric with, and independently rotatable with respect to the remaining ring structures. The first and second ring structures are each coupled to separate ones of the rotating engine shafts, and the intermediate ring is operable to transfer torque between the pair of shafts. Preferably, the intermediate ring structure is coupled to a rotating machine. The rotating machine has a controller, and is operable for adjusting a ratio of torque transferred between the pair of shafts.Type: GrantFiled: December 22, 2006Date of Patent: September 7, 2010Assignee: General Electric CompanyInventors: John M. Kern, Juan M. De Bedout, Kiyoung Chung, Michal-Wolfgang Waszak, Manoj Ramprasad Shah, Peter D. Toot, Ronghai Qu, Wei Wu
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Publication number: 20100060076Abstract: A marine vessel power and propulsion system that provides a vessel-wide uninterruptible power supply is described. The power and propulsion system includes a propulsion system including a prime mover coupled to a motor/generator and a propulsion device. The motor/generator is configured to be driven by the prime mover and to generate alternating current (AC) electric power. The power and propulsion system also includes a ship-service electrical system including a generator set and a ship-service bus. The generator set is configured to generate ship-service electric power for distribution over the ship-service bus. The power and propulsion system also includes a bi-directional converter configured to couple the propulsion system to the ship-service electrical system and to convert AC electric power generated by the propulsion system to ship-service electric power for distribution over the ship-service electrical system.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Inventors: Paul R. Gemin, Ralph Teichmann, Kiyoung Chung
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Patent number: 7652489Abstract: A system for measuring clearance between a stationary object and a movable object is provided. The system includes at least one sensor configured to be disposed on the stationary object and configured to measure an operating parameter corresponding to the movable object and a controller coupled to the at least one sensor, wherein the controller is configured to control an operating mode of the sensor based upon the measured operating parameter.Type: GrantFiled: December 6, 2005Date of Patent: January 26, 2010Assignee: General Electric CompanyInventors: Samhita Dasgupta, Minesh Ashok Shah, Kiyoung Chung, Emad Andarawis Andarawis, William Lee Herron, Hans Max Ortlepp
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Patent number: 7645174Abstract: A propulsion system for a marine vessel includes a first electric machine coupled to a first drive shaft configured to provide propulsion to the marine vessel, and a second electric machine coupled to a second drive shaft configured to provide propulsion to the marine vessel, in a first mode of propulsion system operation, the first electric machine is configured as a generator to supply power to the second electric machine. The second electric machine is configured as a motor to drive the second drive shaft. A method of operating the propulsion system and a vessel including the propulsion system are also described.Type: GrantFiled: February 27, 2007Date of Patent: January 12, 2010Assignee: General Electric CompanyInventors: Kiyoung Chung, Paul Robert Gemin
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Patent number: 7603864Abstract: An electromagnetic machine that generates electric power from an engine by having rotor poles on the tips of the fan blade airfoils and stator elements circumferentially placed around the blade airfoils. As the pole tips on the blade airfoils are excited, they rotate past the stator elements, causing a magnetic flux change in the stator. The magnetic flux change results in an electric potential that is used to provide power.Type: GrantFiled: November 29, 2006Date of Patent: October 20, 2009Assignee: General Electric CompanyInventors: Paul Robert Gemin, KiYoung Chung
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Patent number: 7514810Abstract: An inside out generator disposed aft of the low-pressure turbine spool to generate power for the electrical demands of an aircraft system. The low-pressure turbine discharge flow is used to drive the power turbine, which is coupled to the generator. The generator is able to extract power at idle conditions of the aircraft engine from ducting the discharge through the inside out generator. The system eliminates the placement of a generator in the hot gas path of the discharge, and enables the injection of power directly to the accessory gear box of the engine.Type: GrantFiled: December 15, 2006Date of Patent: April 7, 2009Assignee: General Electric CompanyInventors: John M. Kern, KiYoung Chung, Ronghai Qu, Wei Wu, Craig D. Young, Peter D. Toot, Christopher Glynn, Tom Compton
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Publication number: 20080207066Abstract: A propulsion system for a marine vessel includes a first electric machine coupled to a first drive shaft configured to provide propulsion to the marine vessel, and a second electric machine coupled to a second drive shaft configured to provide propulsion to the marine vessel, in a first mode of propulsion system operation, the first electric machine is configured as a generator to supply power to the second electric machine. The second electric machine is configured as a motor to drive the second drive shaft. A method of operating the propulsion system and a vessel including the propulsion system are also described.Type: ApplicationFiled: February 27, 2007Publication date: August 28, 2008Inventors: Kiyoung Chung, Paul Robert Gemin
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Publication number: 20080149445Abstract: A system for transferring torque between a pair of independently, concurrently rotating shafts of a turbofan engine includes a magnetic gearbox. The magnetic gearbox has a first ring structure, a second ring structure and an intermediate ring structure. Each ring structure has an annular aperture therethrough and a plurality of permanent magnets embedded therein. The intermediate ring structure is disposed between the first and the second ring structures. Each ring structure is coaxially concentric with, and independently rotatable with respect to the remaining ring structures. The first and second ring structures are each coupled to separate ones of the rotating engine shafts, and the intermediate ring is operable to transfer torque between the pair of shafts. Preferably, the intermediate ring structure is coupled to a rotating machine. The rotating machine has a controller, and is operable for adjusting a ratio of torque transferred between the pair of shafts.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: John M. Kern, Juan M. De Bedout, Kiyoung Chung, Michal-Wolfgang Waszak, Manoj R. Shah, Peter D. Toot, Ronhai Qu, Wei Wu
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Publication number: 20080143115Abstract: An inside out generator disposed aft of the low-pressure turbine spool to generate power for the electrical demands of an aircraft system. The low-pressure turbine discharge flow is used to drive the power turbine, which is coupled to the generator. The generator is able to extract power at idle conditions of the aircraft engine from ducting the discharge through the inside out generator. The system eliminates the placement of a generator in the hot gas path of the discharge, and enables the injection of power directly to the accessory gear box of the engine.Type: ApplicationFiled: December 15, 2006Publication date: June 19, 2008Inventors: John M. Kern, KiYoung Chung, Ronghai Qu, Wei Wu, Craig D. Young, Peter D. Toot, Christopher Glynn, Tom Compton
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Publication number: 20080120980Abstract: An electromagnetic machine that generates electric power from an engine by having rotor poles on the tips of the fan blade airfoils and stator elements circumferentially placed around the blade airfoils. As the pole tips on the blade airfoils are excited, they rotate past the stator elements, causing a magnetic flux change in the stator. The magnetic flux change results in an electric potential that is used to provide power.Type: ApplicationFiled: November 29, 2006Publication date: May 29, 2008Inventors: Paul Robert Gemin, KiYoung Chung
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Publication number: 20070128016Abstract: A system for measuring clearance between a stationary object and a movable object is provided. The system includes at least one sensor configured to be disposed on the stationary object and configured to measure an operating parameter corresponding to the movable object and a controller coupled to the at least one sensor, wherein the controller is configured to control an operating mode of the sensor based upon the measured operating parameter.Type: ApplicationFiled: December 6, 2005Publication date: June 7, 2007Inventors: Samhita Dasgupta, Minesh Shah, Kiyoung Chung, Emad Andarawis, William Herron, Hans Ortlepp
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Patent number: 6463380Abstract: An exemplary embodiment of the invention is directed to a control system for controlling an engine. The control system includes a schedule memory for storing a schedule representing target values for a controlled variable. The control system also includes a processor coupled to the schedule memory. The processor receives a reference input and generates a control signal in response to the reference input and the schedule. The schedule in the schedule memory may be updated to account for engine deterioration so that accurate control is performed. Another exemplary embodiment of the invention is a method for controlling an engine. The method includes updating a schedule to account for deterioration of the engine.Type: GrantFiled: June 1, 1999Date of Patent: October 8, 2002Assignee: General Electric CompanyInventors: Adrian M. Ablett, Sridhar Adibhatla, Kiyoung Chung
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Patent number: 5424595Abstract: The invention comprises a switched reluctance machine including a stator and a rotor wherein the stator includes stator teeth wound with separately excitable phase windings. The separately excitable phase windings receiving a combination of signals wherein the first of those signals is a phase winding signal and the second of those signals is a magnetic bearing signal. A method of controlling a switched reluctance machine wherein the switched reluctance machine includes separately excitable stator windings. The method comprising the steps of exciting each stator winding with a signal representative of the phase excitation for that winding and superimposing on each of said windings a signal capable of producing the magnetic force necessary to support the rotor in the absence of a mechanical bearing.Type: GrantFiled: December 22, 1994Date of Patent: June 13, 1995Assignee: General Electric CompanyInventors: Mark A. Preston, James P. F. Lyons, Eike Richter, Kiyoung Chung